Element 4 Extra Class Question Pool - This Pool Takes Effect July 1, 2002 エレメント４エクストラ級問題集　−　２００２年７月１日より有効 * To obtain a copy of the graphics references that are to be used with this question pool, see the downloadable PDF graphic on our web page directly below this pool, or send a business sized SASE to the ARRL/VEC, 225 Main St, Newington CT 06111. Request the "2002 Extra class Question Pool Graphics". For $1.50 the ARRL VEC will supply a hardcopy of this pool without receiving an SASE. この問題集で使われるグラフィクス参照資料は、ウェブページからダウンロードして下さい。 * The questions contained within this pool must be used in all Extra class examinations beginning July 1, 2002, and is intended to be used up through June 30, 2006. この問題集に含まれる問題は、２００２年７月１日から２００６年６月３０日までの全ての エクストラ試験に出題されるものとする。 * The correct answer position A,B,C,D appears in parenthesis following each question number [eg, in E1A01 (B), position B contains the correct answer text]. 正解は、問題の最後に付いている括弧の中に表示されている［例えば、Ｅ１Ａ０１（Ｂ）では、 Ｂが正解である］。 * Questions or comments regarding this question pool can be directed to the ARRL VEC at vec@arrl.org この問題集に関する質問は、ＡＲＲＬ　ＶＥＣまで。 Question Pool ELEMENT 4 - EXTRA CLASS as released by the Question Pool Committee of the National Conference of Volunteer Examiner Coordinators November 30, 2001 SUBELEMENT E1 -- COMMISSION'S RULES [7 Exam Questions -- 7 Groups] E1A Operating standards: frequency privileges for Extra class amateurs; emission standards; message forwarding; frequency sharing between ITU Regions; FCC modification of station license; 30-meter band sharing; stations aboard ships or aircraft; telemetry; telecommand of an amateur station; authorized telecommand transmissions E1A01 (B) [97.301(b)] What exclusive frequency privileges in the 80-meter band are authorized to Amateur Extra Class control operators? ８０ｍ帯でアマチュアエクストラ級の局のみが使う事の出来る周波数は？ A. 3525-3775 kHz B. 3500-3525 kHz C. 3700-3750 kHz D. 3500-3550 kHz E1A02 (C) [97.301(b)] What exclusive frequency privileges in the 75-meter band are authorized to Amateur Extra class control operators? ７５ｍ帯でアマチュアエクストラ級の局のみが使う事の出来る周波数は？ A. 3775-3800 kHz B. 3800-3850 kHz C. 3750-3775 kHz D. 3800-3825 kHz E1A03 (A) [97.301(b)] What exclusive frequency privileges in the 40-meter band are authorized to Amateur Extra class control operators? ４０ｍ帯でアマチュアエクストラ級の局のみが使う事の出来る周波数は？ A. 7000-7025 kHz B. 7000-7050 kHz C. 7025-7050 kHz D. 7100-7150 kHz E1A04 (D) [97.301(b)] What exclusive frequency privileges in the 20-meter band are authorized to Amateur Extra Class control operators? ２０ｍ帯でアマチュアエクストラ級の局のみが使う事の出来る周波数は？ A. 14.100-14.175 MHz and 14.150-14.175 MHz B. 14.000-14.125 MHz and 14.250-14.300 MHz C. 14.025-14.050 MHz and 14.100-14.150 MHz D. 14.000-14.025 MHz and 14.150-14.175 MHz E1A05 (C) [97.301(b)] What exclusive frequency privileges in the 15-meter band are authorized to Amateur Extra Class control operators? １５ｍ帯でアマチュアエクストラ級の局のみが使う事の出来る周波数は？ A. 21.000-21.200 MHz and 21.250-21.270 MHz B. 21.050-21.100 MHz and 21.150-21.175 MHz C. 21.000-21.025 MHz and 21.200-21.225 MHz D. 21.000-21.025 MHz and 21.250-21.275 MHz E1A06 (A) [97.301(b)] Which frequency bands contain at least one segment authorized to only control operators holding an Amateur Extra Class operator license? アマチュアエクストラ級の局のみが使う事の出来る周波数領域が１つ以上在る周波数帯は？ A. 80, 75, 40, 20 and 15 meters B. 80, 40, and 20 meters C. 75, 40, 30 and 10 meters D. 160, 80, 40 and 20 meters E1A07 (B) [97.301(b)] Within the 20-meter band, what is the amount of spectrum authorized to only control operators holding an Amateur Extra Class operator license? ２０ｍ帯で、アマチュアエクストラ級の局のみが使う事の出来る周波数の大きさは？ A. 25 kHz B. 50 kHz C. None D. 25 MHz E1A08 (A) [97.301(b)] Which frequency bands contain two segments authorized to only control operators holding an Amateur Extra Class operator license, CEPT radio-amateur Class 1 license or Class 1 IARP? アマチュアエクストラ級、ＣＥＰＴ無線アマチュア１級、１級ＩＡＲＰの免許局のみが 使う事の出来る周波数領域が２つ在る周波数帯は？ A. 80/75, 20 and 15 meters B. 40, 30 and 20 meters C. 30, 20 and 17 meters D. 30, 20 and 12 meters E1A09 (D) [97.307(c)] What must an amateur station licensee do if a spurious emission from the station causes harmful interference to the reception of another radio station? 自局から出るスプリアス電波が他局の受信に有害混信を与える時、免許人がする事は？ A. Pay a fine each time it happens B. Submit a written explanation to the FCC C. Forfeit the station license if it happens more than once D. Eliminate or reduce the interference 　　混信の除去若しくは削減。 E1A10 (A) [97.307(d)] What is the maximum mean power permitted for any spurious emission from a transmitter or external RF power amplifier transmitting at a mean power of 5 watts or greater on an amateur service HF band? アマチュアのＨＦ帯で平均出力５Ｗ以上で送信する送信機や外部ＲＦパワーアンプから 発生するスプリアス電波の最大許容平均出力は？ A. The lesser of 50 milliwatts or 40 dB below the mean power of the fundamental emission 　　５０ｍＷか基本電波の平均出力の４０ｄＢ以下のどちらか小さい方。 B. 60 dB below the mean power of the fundamental emission C. 10 microwatts D. The lesser of 25 microwatts or 40 dB below the mean power of the fundamental emission E1A11 (A) [97.307(d)] What is the maximum mean power permitted for any spurious emission from a transmitter or external RF power amplifier transmitting at a mean power less than 5 watts on an amateur service HF band? アマチュアのＨＦ帯で平均出力５Ｗ以下で送信する送信機や外部ＲＦパワーアンプから 発生するスプリアス電波の最大許容平均出力は？ A. 30 dB below the mean power of the fundamental emission 　　基本電波の平均出力の３０ｄＢ以下。 B. 60 dB below the mean power of the fundamental emission C. 10 microwatts D. 25 microwatts E1A12 (A) [97.307(e)] What is the maximum mean power permitted to any spurious emission from a transmitter or external RF power amplifier transmitting at a mean power greater than 25 watts on an amateur service VHF band? アマチュアのＶＨＦ帯で平均出力２５Ｗ以上で送信する送信機や外部ＲＦパワーアンプから 発生するスプリアス電波の最大許容平均出力は？ A. 60 dB below the mean power of the fundamental emission 　　基本電波の平均出力の６０ｄＢ以下。 B. 40 dB below the mean power of fundamental emission C. 10 microwatts D. 25 microwatts E1A13 (A) [97.307(e)] What is the maximum mean power permitted for any spurious emission from a transmitter having a mean power of 25 W or less on an amateur service VHF band? アマチュアのＶＨＦ帯で平均出力２５Ｗ以下で送信する送信機や外部ＲＦパワーアンプから 発生するスプリアス電波の最大許容平均出力は？ A. The lesser of 25 microwatts or 40 dB below the mean power of the fundamental emission 　　２５ｍＷか基本電波の平均出力の４０ｄＢ以下のどちらか小さい方。 B. The lesser of 50 microwatts or 40 dB below the mean power of the fundamental emission C. 20 microwatts D. 50 microwatts E1A14 (B) [97.219(b), (d)] If a packet bulletin board station in a message forwarding system inadvertently forwards a message that is in violation of FCC rules, who is accountable for the rules violation? メッセージ回送網のパケット掲示板局がＦＣＣ規則に反したメッセージをうっかり回送した時、 規則違反の責任を負うのは？ A. The control operator of the packet bulletin board station B. The control operator of the originating station and conditionally the first forwarding station 　　発信局と状況によっては最初の回送局。 C. The control operators of all the stations in the system D. The control operators of all the stations in the system not authenticating the source from which they accept communications E1A15 (A) [97.219(c)] If your packet bulletin board station inadvertently forwards a communication that violates FCC rules, what is the first action you should take? パケット掲示板局がＦＣＣ規則に反したメッセージをうっかり回送してしまった時に 最初に何をするか？ A. Discontinue forwarding the communication as soon as you become aware of it 　　気付いたら直ちに通信の回送を停止する。 B. Notify the originating station that the communication does not comply with FCC rules C. Notify the nearest FCC Enforcement Bureau office D. Discontinue forwarding all messages E1A16 (A) [97.303] For each ITU Region, how is each frequency band allocated internationally to the amateur service designated? 各ＩＴＵ領域で、国際的にアマチュア局に割当てられた周波数帯は、どのように規定されているか？ A. Primary service or secondary service 　　１次局若しくは２次局として。 B. Primary service C. Secondary service D. Co-secondary service E1A17 (D) [97.27] Why might the FCC modify an amateur station license? ＦＣＣがアマチュア局免許を変更する事があるのは？ A. To relieve crowding in certain bands B. To better prepare for a time of national emergency C. To enforce a radio quiet zone within one mile of an airport D. To promote the public interest, convenience and necessity 　　公共の利益、便益、必要性を図るため。 E1A18 (A) [97.303(d)] What are the sharing requirements for an amateur station transmitting in the 30- meter band? ３０ｍ帯で送信するアマチュア局の共有規則とは？ A. It must not cause harmful interference to stations in the fixed service authorized by other nations 　　他国にて認可されている固定サービス局に有害混信を起こしてはならない。 B. There are no sharing requirements C. Stations in the fixed service authorized by other nations must not cause harmful interference to amateur stations in the same country D. Stations in the fixed service authorized by other nations must not cause harmful interference to amateur stations in another country E1A19 (A) [97.11(a)] If an amateur station is installed on board a ship and is separate from the ship radio installation, what condition must be met before the station may transmit? アマチュア局が船上に設置され、船の無線設備から分離している場合、局が送信する条件は？ A. Its operation must be approved by the master of the ship 　　船長の承認を受けなければならない。 B. Its antenna must be separate from the main ship antennas, transmitting only when the main radios are not in use C. It must have a power supply that is completely independent of the main ship power supply D. Its operator must have an FCC Marine endorsement on his or her amateur operator license E1A20 (A) [97.3(a)(45)] What is the definition of the term telemetry? 遠隔測定の定義は？ A. A one-way transmission of measurements at a distance from the measuring instrument 　　遠隔に在る測定装置からの測定値の一方向送信。 B. A two-way interactive transmission C. A two-way single channel transmission of data D. A one-way transmission to initiate, modify or terminate functions of a device at a distance E1A21 (D) [97.3(a)(43)] What is the definition of the term telecommand? 遠隔指令の定義は？ A. A one way transmission of measurements at a distance from the measuring instrument B. A two-way interactive transmission C. A two-way single channel transmission of data D. A one-way transmission to initiate, modify or terminate functions of a device at a distance 　　遠隔に在る装置の機能の開始、修正、停止を送る一方向送信。 E1A22 (D) [97.211(b)] When may an amateur station transmit special codes intended to obscure the meaning of messages? アマチュア局が通信文の意味を隠す為に特別な暗号を送信しても良い時は？ A. Never under any circumstances B. Only when a Special Temporary Authority has been obtained from the FCC C. Only when an Amateur Extra Class operator is the station control operator D. When sending telecommand messages to a station in space operation 　　宇宙運用中の局に遠隔指令通信を送る時。 E1B Station restrictions: restrictions on station locations; restricted operation; teacher as control operator; station antenna structures; definition and operation of remote control and automatic control; control link E1B01 (A) [97.13(a)] Which of the following factors might restrict the physical location of an amateur station apparatus or antenna structure? アマチュア局の設備やアンテナ構造の物理的な位置を規制する項目は？ A. The land may have environmental importance; or it is significant in American history, architecture or culture 　　その土地が、環境上重要である、若しくは、米国歴史、建築、文化的に重要である。 B. The location's political or societal importance C. The location's geographical or horticultural importance D. The location's international importance, requiring consultation with one or more foreign governments before installation E1B02 (A) [97.13(b)] Outside of what distance from an FCC monitoring facility may an amateur station be located without concern for protecting the facility from harmful interference? ＦＣＣの監視施設からどのくらい距離を置けば、施設に有害混信を 与えないように気をつける必要なくアマチュア局を設置出来るか？ A. 1 mile 　　１マイル。 B. 3 miles C. 10 miles D. 30 miles E1B03 (C) [97.13(a)] What must be done before an amateur station is placed within an officially designated wilderness area or wildlife preserve, or an area listed in the National Register of Historical Places? 公式に指定された自然地帯や野生動物保護区、若しくは、米国史跡登録に 登録されている地域の中にアマチュア局を設置する為には？ A. A proposal must be submitted to the National Park Service B. A letter of intent must be filed with the National Audubon Society C. An Environmental Assessment must be submitted to the FCC 　　環境アセスメントをＦＣＣに提出しなければならない。 D. A form FSD-15 must be submitted to the Department of the Interior E1B04 (D) [97.121(a )] If an amateur station causes interference to the reception of a domestic broadcast station with a receiver of good engineering design, on what frequencies may the operation of the amateur station be restricted? アマチュア局が正しく技術設計された受信機の国内放送局受信に 混信を与える場合、アマチュア局の運用が規制される事の在る周波数は？ A. On the frequency used by the domestic broadcast station B. On all frequencies below 30 MHz C. On all frequencies above 30 MHz D. On the frequency or frequencies used when the interference occurs 　　混信が起きた時に使った周波数。 E1B05 (C) [97.113(c)] When may an amateur operator accept compensation for serving as the control operator of an amateur station used in a classroom? アマチュア局は授業の中で使われたアマチュア局のコントロール運用者として 報酬を受け取る事が許される事があるのはいつか？ A. Only when the amateur operator does not accept pay during periods of time when the amateur station is used B. Only when the classroom is in a correctional institution C. Only when the amateur operator is paid as an incident of a teaching position during periods of time when the station is used by that teacher as a part of classroom instruction at an educational institution 教育機関において授業の一環としてアマチュア局が使われた時間の間 教師としての報酬を受け取る事に限る。 D. Only when the station is restricted to making contacts with similar stations at other educational institutions E1B06 (B) [97.113(c)] Who may accept compensation for serving as a control operator in a classroom at an educational institution? 教育機関に於いて授業中にコントロール運用者として報酬を受け取る事が出来るのは？ A. Any licensed amateur operator B. Only an amateur operator accepting such pay as an incident of a teaching position during times when the station is used by that teacher as a part of classroom instruction 授業の一環としてアマチュア局が使われた時間の間、教師としての報酬を受け取る アマチュア運用者に限る。 C. Only teachers at correctional institutions D. Only students at educational or correctional institutions E1B07 (B)[97.15(a) If an amateur antenna structure is located in a valley or canyon, what height restrictions apply? アマチュアのアンテナ建造物が谷や渓谷に立てられる時、高さ制限は？ A. The structure must not extend more than 200 feet above average height of terrain B. The structure must be no higher than 200 feet above the ground level at its site 　　その場所の地上高２００フィート以内。 C. There are no height restrictions since the structure would not be a hazard to aircraft in a valley or canyon D. The structure must not extend more than 200 feet above the top of the valley or canyon E1B08 (D) [97.15b] What limits must local authorities observe when legislating height and dimension restrictions for an amateur station antenna structure? アマチュア局のアンテナ建造物の高さや寸法制限を法律で定める時に、 地区行政が守らなくてはならない事は？ A. FAA regulations specify a minimum height for amateur antenna structures located near airports B. FCC regulations specify a 200 foot minimum height for amateur antenna structures C. State and local restrictions of amateur antenna structures are not allowed D. Such regulation must reasonably accommodate amateur service communications and must constitute the minimum practicable regulation to accomplish the state or local authorities legitimate purpose そのような規制は、アマチュア局の通信を十分許容し、州や地域行政当局が 法的な目的を達する為の実際的な最小限の規制でなくてはならない。 E1B09 (A) [97.15a] If you are installing an amateur radio station antenna at a site within 5 miles from a public use airport, what additional rules apply? 一般空港から５マイル以内にアマチュア無線のアンテナを立てる場合、増える規則は？ A. You must evaluate the height of your antenna based on the FCC Part 17 regulations 　　ＦＣＣパート１７規則に基づくアンテナ高さの評価。 B. No special rules apply if your antenna structure will be less than 200 feet in height C. You must file an Environmental Impact Statement with the Environmental Protection Agency before construction begins D. You must obtain a construction permit from the airport zoning authority E1B10 (D) [97.3a38] What is meant by a remotely controlled station? 遠隔制御局とは？ A. A station operated away from its regular home location B. Control of a station from a point located other than at the station transmitter C. A station operating under automatic control D. A station controlled indirectly through a control link 　　制御リンクを使って間接的に制御する局。 E1B11 (A) [97.109(d), 201(d), 97.203(d), 97.205(d)] Which of the following amateur stations may not be operated under automatic control? 自動制御で運用してはいけないアマチュア局は？ A. Remote control of model aircraft 　　模型飛行機の遠隔操作。 B. Beacon station C. Auxiliary station D. Repeater station E1B12 (A) [97.3(a)(6), 97.109(d)] What is meant by automatic control of a station? 局の自動操作とは？ A. The use of devices and procedures for control so that the control operator does not have to be present at the control point 　　コントロール点にコントロール運用者が居なくても良いように、制御のための装置や 　　手順を使う事。 B. A station operating with its output power controlled automatically C. Remotely controlling a station such that a control operator does not have to be present at the control point at all times D. The use of a control link between a control point and a locally controlled station E1B13 (B) [97.3(a)(6), 97.109(d)] How do the control operator responsibilities of a station under automatic control differ from one under local control? 自動制御の局に対する運用責任とコントロール運用者が制御する局に対する運用責任の違いは？ A. Under local control there is no control operator B. Under automatic control the control operator is not required to be present at the control point 　　自動制御の場合は、コントロール運用者がコントロール点に居なくても良い。 C. Under automatic control there is no control operator D. Under local control a control operator is not required to be present at a control point E1B14 (C) [97.3(a)(38)] What is a control link? 制御リンクとは？ A. A device that automatically controls an unattended station B. An automatically operated link between two stations C. The means of control between a control point and a remotely controlled station 　　コントロール点と遠隔コントロールされる局間の制御手段。 D. A device that limits the time of a station's transmission E1B15 (D) [97.3(a)(38)] What is the term for apparatus to effect remote control between the control point and a remotely controlled station? コントロール点と遠隔コントロールされる局間の遠隔制御を実現する装置の名称は？ A. A tone link B. A wire control C. A remote control D. A control link 　　制御リンク。 E1C Reciprocal operating: reciprocal operating authority; purpose of reciprocal agreement rules; alien control operator privileges; identification (Note: This includes CEPT and IARP) E1C01 (A) [97.5(c),(d), (e), 97.107] What is an FCC authorization for alien reciprocal operation? ＦＣＣの外国人相互運用許可とは？ A. An FCC authorization to the holder of an amateur license issued by certain foreign governments to operate an amateur station in the US 　　ＦＣＣによる、特定の外国政府が発行したアマチュア免許の所持人が米国内 　　でアマチュア局を運用する許可。 B. An FCC permit to allow a US licensed amateur to operate in a foreign nation except Canada C. An FCC permit allowing a foreign licensed amateur to handle third-party traffic between the US and the amateur's own nation D. An FCC agreement with another country allowing the passing of third-party traffic between amateurs of the two nations E1C02 (B) [97.107] Who is authorized for alien reciprocal operation in places where the FCC regulates the amateur service? ＦＣＣがアマチュア局を規制する場所で外国人相互運用を許可される者は？ A. Anyone holding a valid amateur service license issued by a foreign government B. Any non-US citizen holding an amateur service license issued by their government with which the US has a reciprocal operating arrangement 　　米国が相互運用協定を結んでいる外国政府から発行されたアマチュア免許を所持する 　　米国籍を持たないその国の市民。 C. Anyone holding a valid amateur service license issued by a foreign government with which the US has a reciprocal operating arrangement D. Any non-US citizen holding a valid amateur license issued by a foreign government, as long as the person is a citizen of that country E1C03 (C) [97.107] What are the frequency privileges authorized for alien reciprocal operation? 外国人相互運用で許可される周波数は？ A. Those authorized to a holder of the equivalent US amateur operator license B. Those that the alien has in his or her own country C. Those authorized to the alien by his country of citizenship, but not to exceed those authorized to Amateur Extra Class operators 　　自国で許可された周波数、但し、アマチュアエクストラ級の運用範囲を超えない。 D. Those approved by the International Amateur Radio Union E1C04 (D) [97.119(g)] What indicator must a Canadian amateur station include with the assigned call sign in the station identification announcement when operating in the US? カナダのアマチュア局が米国で運用するに当り、局名を言う時、指定された コールサインの他に何を加えるか？ A. No indicator is required B. The grid-square locator number for the location of the station must be included after the call sign C. The permit number and the call-letter district number of the station location must be included before the Canadian-assigned call sign D. The letter-numeral indicating the station location after the Canadian call sign and the closest city and state once during the communication 　　通信に一度、カナダのコールサインの後に局の場所を示す文字ー数字、及び、直近の街と州。 E1C05 (A) [97.107] When may a US citizen holding a foreign amateur service license be authorized for alien reciprocal operation in places where the FCC regulates the amateur service? ＦＣＣがアマチュア局を規制する場所で外国のアマチュア免許を所持する 米国市民が外国人相互運用を許可される時は？ A. Never; US citizens are not eligible for alien reciprocal operation 　　許可されない；米国市民は外国人相互運用の適用を受けない。 B. When the US citizen also holds citizenship in the foreign country C. When the US citizen was born in the foreign country D. When the US citizen has no current FCC amateur service license E1C06 (A) [97.107] Which of the following would disqualify a foreign amateur operator from being authorized for alien reciprocal operation in places where the FCC regulates the amateur service? ＦＣＣがアマチュア局を規制する場所で外国のアマチュア運用者が外国人相互運用を 許可されない時は？ A. Not being a citizen of the country that issued the amateur service license 　　アマチュア免許を発行した国の市民でない時。 B. Having citizenship in their own country but not US citizenship C. Holding only an amateur license issued by their own country but holding no FCC amateur service license grant D. Holding an amateur service license issued by their own country authorizing privileges beyond Amateur Extra Class operator privileges E1C07 (B) [97.107(a)] What special document is required before a Canadian citizen holding a Canadian amateur service license may reciprocal operate in the US? カナダのアマチュア免許を所持するカナダ人が米国で相互運用を行う時に必要な書類は？ A. A written FCC authorization for alien reciprocal operation B. No special document is required 　　特別な書類は必要ない。 C. The citizen must have an FCC-issued validation of their Canadian license D. The citizen must have an FCC-issued Certificate of US License Grant without Examination to operate for a period longer than 10 days E1C08 (C) [97.107(b)] What operating privileges does a properly licensed alien amateur have in the US, if the US and the alien amateur's home country have a multilateral or bilateral reciprocal operating agreement? 米国と外国人アマチュアの母国がマルチ若しくは双方相互運用協定を結んでいる時、 正式な免許を所持する外国のアマチュアの米国内での運用条件は？ A. All privileges of their home license B. All privileges of an Amateur Extra Class operator license C. Those authorized by their home license, not to exceed the operating privileges of an Amateur Extra Class operator license 　　自国で許可された条件、但し、アマチュアエクストラ級の運用範囲を超えない。 D. Those granted by the home license that match US privileges authorized to amateur operators in ITU Region 1 E1C09 (D) [97.5(c)] From which locations may a licensed alien amateur operator be the control operator of an amateur station? 免許を受けた外国人アマチュア運用者がどこからアマチュア局のコントロール運用者に なる事が出来るか？ A. Only locations within the boundaries of the 50 United States B. Only locations listed as the primary station location on an FCC amateur service license C. Only locations on ground within the US and its territories; no shipboard or aeronautical mobile operation is permitted D. Any location where the amateur service is regulated by the FCC 　　アマチュア運用がＦＣＣによって規制されている所ならどこでも。 E1C10 (A) [97.5(d)] Which of the following operating arrangements allow an FCC licensed US citizen to operate in many European countries and alien amateurs from many European countries to operate in the US? ＦＣＣの免許を受けた米国市民が多くのヨーロッパ諸国で運用し、ヨーロッパ諸国の 外国人アマチュアが米国で運用する事を可能にする運用協定は？ A. CEPT agreement 　　ＣＥＰＴ協定。 B. IARP agreement C. ITU agreement D. All of these choices are correct E1C11 (B) [97.5(e)] Which of the following multilateral or bilateral operating arrangements allow an FCC licensed US citizen and many Central and South American amateur operators to operate in each other's countries? ＦＣＣの免許を受けた米国市民と多くの中南米のアマチュア局が互いの国で運用出来るように する多国間、若しくは、二国間運用協定は？ A. CEPT agreement B. IARP agreement 　　ＩＡＲＰ協定。 C. ITU agreement D. All of these choices are correct E1C12 (D) [97.119(g)] What additional station identification, in addition to his or her own call sign, does an alien operator supply when operating in the US under an FCC authorization for alien reciprocal operation? ＦＣＣの外国人相互運用許可の元に米国内で運用する時、外国人局が局名を言う時に コールサインに付けて送るものは？ A. No additional operation is required B. The gird-square locator closest to his or her present location is included before the call C. The serial number of the permit and the call-letter district number of the station location is included before the call D. The letter-numeral indicating the station location in the US included before their call and the closest city and state given once during the communication 　　通信に一度、コールサインの前に米国内の局の場所を示す文字ー数字、及び、直近の街と州。 E1D Radio Amateur Civil Emergency Service (RACES): definition; purpose; station registration; station license required; control operator requirements; control operator privileges; frequencies available; limitations on use of RACES frequencies; points of communication for RACES operation; permissible communications E1D01 (B) [97.3(a)(37)] What is the Radio Amateur Civil Emergency Service (RACES)? 無線アマチュア民間非常時活動とは？ A. A radio service using amateur service frequencies on a regular basis for communications that can reasonably be furnished through other radio services B. A radio service using amateur stations for civil defense communications during periods of local, regional, or national civil emergencies 　　アマチュア局を局地的、地域的、若しくは、国家的民間非常時に民間防衛通信に使う無線活動。 C. A radio service using amateur service frequencies for broadcasting to the public D. A radio service using local government frequencies by Amateur Radio operators for emergency communications E1D02 (A) [97.3(a)(37)] What is the purpose of RACES? ＲＡＣＥＳの目的は？ A. To provide civil-defense communications during emergencies 　　非常時に民間防衛通信を供与する事。 B. To provide emergency communications for boat or aircraft races C. To provide routine and emergency communications for athletic races D. To provide routine and emergency military communications E1D03 (C) [97.407(a)] With what organization must an amateur station be registered before participating in RACES? ＲＡＣＥＳに参加する前にアマチュア局が登録しなければならない機関は？ A. The Amateur Radio Emergency Service B. The US Department of Defense C. A civil defense organization 　　民間防衛機関。 D. The FCC Enforcement Bureau E1D04 (C) [97.407(a)] Which amateur stations may be operated in RACES? ＲＡＣＥＳで運用を許可されるアマチュア局は？ A. Only those licensed to Amateur Extra class operators B. Any FCC-licensed amateur station except a station licensed to a Technician class operator C. Any FCC-licensed amateur station certified by the responsible civil defense organization for the area served 　　活動するエリアを担当する民間防衛機関から証明を受けたＦＣＣ免許アマチュア局なら誰でも。 D. Any FCC licensed amateur station participating in the Military Affiliate Radio System (MARS) E1D05 (A) [97.407(b)] What frequencies are authorized normally to an amateur station participating in RACES? ＲＡＣＥＳに参加しているアマチュア局に通常許可される周波数は？ A. All amateur service frequencies otherwise authorized to the control operator 　　別段コントロール運用者に許可されるものを除き、全てのアマチュア運用周波数。 B. Specific segments in the amateur service MF, HF, VHF and UHF bands C. Specific local government channels D. Military Affiliate Radio System (MARS) channels E1D06 (B) [97.407(b)] What are the frequencies authorized to an amateur station participating in RACES during a period when the President's War Emergency Powers are in force? 大統領戦争非常時権限が発令された時、ＲＡＣＥＳに参加しているアマチュア局が使用出来る周波数は？ A. All frequencies in the amateur service authorized to the control operator B. Specific segments in the amateur service MF, HF, VHF and UHF bands 　　アマチュア活動のＭＦ、ＨＦ、ＶＨＦ、ＵＨＦの決められた領域。 C. Specific local government channels D. Military Affiliate Radio System (MARS) channels E1D07 (D) [97.407(b)] What frequencies are normally available for RACES operation? ＲＡＣＥＳ活動に通常使用可能な周波数は？ A. Only those authorized to the civil defense organization B. Only those authorized to federal government communications C. Only the top 25 kHz of each amateur service band D. All frequencies authorized to the amateur service 　　アマチュア活動に許可された全周波数。 E1D08 (A) [97.407(b)] What type of emergency can cause limits to be placed on the frequencies available for RACES operation? ＲＡＣＥＳ活動に使用可能な周波数に制限が設けられる非常事態は？ A. An emergency during which the President's War Emergency Powers are invoked 　　大統領戦争非常時権限が発令された時。 B. An emergency in only one of the United States would limit RACES operations to a single HF band C. An emergency confined to a 25-mile area would limit RACES operations to a single VHF band D. An emergency involving no immediate danger of loss of life E1D09 (C) [97.407(a)] Who may be the control operator of a RACES station? ＲＡＣＥＳ局でコントロール運用者になる事の出来るのは？ A. Anyone holding an FCC-issued amateur operator license other than Novice B. Only an Amateur Extra Class operator licensee C. Anyone who holds an FCC-issued amateur operator license and is certified by a civil defense organization 　　民間防衛機関から証明を受けたＦＣＣ発行の免許アマチュア運用者免許を持つ者ならなら誰でも。 D. Any person certified as a RACES radio operator by a civil defense organization and who hold an FCC issued GMRS license E1D10 (B) [97.407(c), (d)] With which stations may amateur stations participating in RACES communicate? ＲＡＣＥＳ活動に参加するアマチュア局はどの局と通信して良いか？ A. Any amateur station B. Amateur stations participating in RACES and specific other stations authorized by the responsible civil defense official 　　ＲＡＣＥＳに参加しているアマチュア局と関係する民間防衛係官から許可された特定の局。 C. Any amateur station or a station in the Disaster Communications Service D. Any Citizens Band station that is also registered in RACES E1D11 (C) [97.407(e)] What communications are permissible in RACES? ＲＡＣＥＳで許可される通信は？ A. Any type of communications when there is no emergency B. Any Amateur Radio Emergency Service communications C. National defense or immediate safety of people and property and communications authorized by the area civil defense organization 　　国家防衛、人間や財産の差し迫った安全、地域民間防衛機関によって許可された通信。 D. National defense and security or immediate safety of people and property communications authorized by the President E1E Amateur Satellite Service: definition; purpose; station license required for space station; frequencies available; telecommand operation: definition; eligibility; telecommand station (definition); space telecommand station; special provisions; telemetry: definition; special provisions; space station: definition; eligibility; special provisions; authorized frequencies (space station); notification requirements; earth operation: definition; eligibility; authorized frequencies (Earth station) E1E01 (C) [97.3(a)(3)] What is the amateur-satellite service? アマチュア衛星運用とは？ A. A radio navigation service using satellites for the purpose of self- training, intercommunication and technical studies carried out by amateurs B. A spacecraft launching service for amateur-built satellites C. A service using amateur stations on satellites for the purpose of self- training, intercommunication and technical investigations 　　自己訓練、相互通信、技術的研究の為に衛星上のアマチュア局を使って行う運用。 D. A radio communications service using stations on Earth satellites for weather information gathering E1E02 (A) [97.3(a)(40)] What is a space station in the amateur-satellite service? アマチュア衛星運用に於ける宇宙局とは？ A. An amateur station located more than 50 km above the Earth's surface 　　地表から上空５０Ｋｍ以上に位置するアマチュア局。 B. An amateur station designed for communications with other amateur stations by means of Earth satellites C. An amateur station that transmits communications to initiate, modify or terminate functions of an Earth station D. An amateur station designed for communications with other amateur stations by reflecting signals off objects in space E1E03 (A) [97.3(a)(44)] What is a telecommand station in the amateur-satellite service? アマチュア衛星運用に於ける遠隔指令局とは？ A. An amateur station that transmits communications to initiate, modify or terminate functions of a space station 　　宇宙局の機能を開始、修正、停止する通信を送信するアマチュア局。 B. An amateur station located on the Earth's surface for communications with other Earth stations by means of Earth satellites C. An amateur station located more than 50 km above the Earth's surface D. An amateur station that transmits telemetry consisting of measurements of upper atmosphere data from space E1E04 (A) [97.3(a)(16)] What is an earth station in the amateur-satellite service? アマチュア衛星運用に於ける地球局とは？ A. An amateur station within 50 km of the Earth's surface for communications with Amateur stations by means of objects in space 　　宇宙にある物体を利用してアマチュア局との通信を行う地表から上空５０Ｋｍ以内 　　にあるアマチュア局。 B. An amateur station that is not able to communicate using amateur satellites C. An amateur station that transmits telemetry consisting of measurement of upper atmosphere data from space D. Any amateur station on the surface of the Earth E1E05 (D) [97.207] Which of the following types of communications may space stations transmit? 宇宙局が送信出来る通信は？ A. Automatic retransmission of signals from Earth stations and other space stations 　　地球局や他の宇宙局からの信号の自動中継送信。 B. One-way communications 　　一方向通信。 C. Telemetry consisting of specially coded messages 　　特別に符号化された通信文から成る遠隔測定。 D. All of these choices are correct 　　全て正しい。 E1E06 (D) [97.207 (a)] Which amateur stations are eligible to operate as a space station? 宇宙局として運用出来るアマチュア局は？ A. Any except those of Technician Class operators B. Only those of General, Advanced or Amateur Extra Class operators C. Only those of Amateur Extra Class operators D. Any FCC-licensed amateur station 　　ＦＣＣから免許されたアマチュア局なら誰でも。 E1E07 (A) [97.207(b)] What special provision must a space station incorporate in order to comply with space station requirements? 宇宙局規格を満足する為に宇宙局が包含しなくてはならない特別な要件とは？ A. The space station must be capable of effecting a cessation of transmissions by telecommand whenever so ordered by the FCC 　　ＦＣＣから指令された場合に遠隔指令によって送信を停止出来る事。 B. The space station must cease all transmissions after 5 years C. The space station must be capable of changing its orbit whenever such a change is ordered by NASA D. The station call sign must appear on all sides of the spacecraft E1E08 (D) [97.207(g)(1)] When must the licensee of a space station give the FCC International Bureau the first written pre-space notification? 宇宙局の免許人がＦＣＣ国際局に文書で第一回宇宙運用前連絡を提出するのはいつ？ A. Any time before initiating the launch countdown for the spacecraft B. No less than 3 months after initiating construction of the space station C. No less that 12 months before launch of the space station platform D. No less than 27 months prior to initiating space station transmissions 　　宇宙局送信開始前２７月以上。 E1E09 (A) [97.207] Which amateur service HF bands have frequencies authorized to space stations? 宇宙局に許可された周波数の在るアマチュア運用ＨＦ帯は？ A. Only 40m, 20m, 17m, 15m, 12m and 10m B. Only 40 m, 20 m, 17m, 15 m and 10 m bands C. 40 m, 30 m, 20 m, 15 m, 12 m and 10 m bands D. All HF bands E1E10 (A) [97.207] Which VHF amateur service bands have frequencies available for space stations? 宇宙局が使用出来る周波数の在るＶＨＦアマチュア運用帯は？ A. 2 meters B. 2 meters and 1.25 meters C. 6 meters, 2 meters, and 1.25 meters D. 6 meters and 2 meters E1E11 (A) [97.207] Which amateur service UHF bands have frequencies available for a space station? 宇宙局に許可された周波数の在るアマチュア運用ＵＨＦ帯は？ A. 70 cm, 23 cm, 13 cm B. 70 cm C. 70 cm and 33 cm D. 33 cm and 13 cm E1E12 (B) [97.211 (a)] Which amateur stations are eligible to be telecommand stations? 遠隔指令局となる事が出来るアマチュア局は？ A. Any amateur station designated by NASA B. Any amateur station so designated by the space station licensee 　　宇宙局の免許人から指定されたアマチュア局。 C. Any amateur station so designated by the ITU D. All of these choices are correct E1E13 (A) [97.211 (b)] What unique privilege is afforded a telecommand station? 遠隔指令局に与えられる特別な権限とは？ A. A telecommand station may transmit command messages to the space station using codes intended to obscure their meaning 　　内容を隠す為に符号を用いて宇宙局に指令通信文を送信してよい。 B. A telecommand station may transmit music to the space station C. A telecommand station may transmit with a PEP output of 5000 watts D. A telecommand station is not required to transmit its call sign at the end of the communication E1E14 (C) [97.207 (f)] What is the term for space-to-Earth transmissions used to communicate the results of measurements made by a space station? 宇宙局による計測結果を通信する為に使われる宇宙−地球間送信を表す用語は？ A. Data transmission B. Frame check sequence C. Telemetry 　　遠隔測定。 D. Space-to-Earth telemetry indicator (SETI) transmissions E1E15 (D) [97.209 (a)] Which amateur stations are eligible to operate as Earth stations? 地球局として運用出来るアマチュア局は？ A. Any amateur station whose licensee has filed a pre-space notification with the FCC International Bureau B. Only those of General, Advanced or Amateur Extra Class operators C. Only those of Amateur Extra Class operators D. Any amateur station, subject to the privileges of the class of operator license held by the control operator 　　いずれのアマチュア局でも、但し、コントロール運用者が所持する運用免許の級の権限以内。 E1F Volunteer Examiner Coordinators (VECs): definition; VEC qualifications; VEC agreement; scheduling examinations; coordinating VEs; reimbursement for expenses; accrediting VEs; question pools; Volunteer Examiners (VEs): definition; requirements; accreditation; reimbursement for expenses; VE conduct; preparing an examination; examination elements; definition of code and written elements; preparation responsibility; examination requirements; examination credit; examination procedure; examination administration; temporary operating authority E1F01 (D) [97.507 (a), (b), (c),97.523] Who may prepare an Element 4 amateur operator license examination? エレメント４アマチュア運用者免許試験を準備出来るのは？ A. The VEC Question Pool Committee, which selects questions from the appropriate VEC question pool B. A VEC that selects questions from the appropriate FCC bulletin C. An Extra class VE that selects questions from the appropriate FCC bulletin D. An Extra class VE or a qualified supplier who selects questions from the appropriate VEC question pool 　　適切なＶＥＣ問題集から問題を選定するエクストラ級ＶＥか資格を持つ者。 E1F02 (C) [97.507(b)] Where are the questions listed that must be used in all written US amateur license examinations? 米国アマチュア免許試験で出題される問題は、何処に掲示してあるか？ A. In the instructions that each VEC give to their VEs B. In an FCC-maintained question pool C. In the VEC-maintained question pool 　　ＶＥＣが維持管理する問題集。 D. In the appropriate FCC Report and Order E1F03 (A) [97.523] Who is responsible for maintaining the question pools from which all amateur license examination questions must be taken? 全てのアマチュア免許試験問題が選抜される問題集を維持管理するのは？ A. All of the VECs 　　ＶＥＣ全体。 B. The VE team C. The VE question pool team D. The FCC Wireless Telecommunications Bureau E1F04 (C) [97.507(a)(1)] Who must select from the VEC question pool the set of questions that are administered in an Element 3 examination? エレメント３試験で出題される問題のセットをＶＥＣ問題集から選抜するのは？ A. Only a VE holding an Amateur Extra Class operator license grant B. The VEC coordinating the examination session C. A VE holding an FCC-issued Amateur Extra or Advanced Class operator license grant 　　ＦＣＣ発行のアマチュアエクストラかアドバンスド級の従事者免許を持つＶＥ。 D. The FCC Enforcement Bureau E1F05 (B) [97.507(a)(2)] Who must select from the VEC question pool the set of questions that are administered in an Element 2 examination? エレメント２試験で出題される問題のセットをＶＥＣ問題集から選抜するのは？ A. The VEC coordinating the examination session B. A VE holding an FCC-issued Technician, General, Advanced or Amateur Extra Class operator license grant 　　ＦＣＣ発行のテクニシャンかアドバンスドかアマチュアエクストラ級の従事者免許を持つＶＥ。 C. Only a VE holding an Amateur Extra or Advanced Class operator license grant D. The FCC Office of Engineering and Technology E1F06 (C) [97.503(a)] What is the purpose of an amateur operator telegraphy examination? アマチュア従事者の電信試験の目的は？ A. It determines the examinee's level of commitment to the amateur service B. All of these choices are correct C. It proves that the examinee has the ability to send correctly by hand and to receive correctly by ear texts in the International Morse Code 　　受験者が国際モールス符号による文章を耳によって正しく受信し、手によって正しく送信する能力を 　　有することの証明。 D. It helps preserve the proud tradition of radiotelegraphy skill in the amateur service E1F07 (A) [97.503(b)] What is the purpose of an Element 4 examination? エレメント４試験の目的は？ A. It proves the examinee has the qualifications necessary to perform properly the duties of an Amateur Extra Class operator 　　受験者がアマチュアエクストラ級従事者の責任を適切に遂行する為に必要な要件を満たしている事の証明。 B. It proves the examinee is qualified as an electronics technician C. It proves the examinee is an electronics expert D. It proves that the examinee is an expert radio operator E1F08 (C) [97.521] What is a Volunteer-Examiner Coordinator? ＶＥＣとは？ A. A person who has volunteered to administer amateur operator license examinations B. A person who has volunteered to prepare amateur operator license examinations C. An organization that has entered into an agreement with the FCC to coordinate amateur operator license examinations 　　ＦＣＣと協定してアマチュア従事者免許試験を統率する事になった団体。 D. The person that has entered into an agreement with the FCC to be the VE session manager E1F09 (B) [97.3(a)(48)] What is an accredited Volunteer Examiner? 認証されたＶＥとは？ A. An amateur operator who is approved by three or more fellow volunteer examiners to administer amateur license examinations B. An amateur operator who is approved by a VEC to administer amateur operator license examinations 　　アマチュア従事者免許試験の監督をＶＥＣから認可されたアマチュア従事者。 C. An amateur operator who administers amateur license examinations for a fee D. An amateur operator who is approved by an FCC staff member to administer amateur operator license examinations E1F10 (A) [97.509(a)] What is a VE Team? ＶＥチームとは？ A. A group of at least three VEs who administer examinations for an amateur operator license 　　アマチュア従事者免許試験を監督する最低３人のＶＥから成るグループ。 B. The VEC staff C. One or two VEs who administer examinations for an amateur operator license D. A group of FCC Volunteer Enforcers who investigate Amateur Rules violations E1F11 (C) [97.509(b)(4)] Which persons seeking to be VEs cannot be accredited? ＶＥ認証を受けれない者は？ A. Persons holding less than an Advanced Class operator license B. Persons less than 21 years of age C. Persons who have ever had an amateur operator or amateur station license suspended or revoked 　　アマチュア従事者若しくはアマチュア局免許を一度でも停止か取消しになった者。 D. Persons who are employees of the federal government E1F12 (D) [97.509(b)(1), 97.525] What is the VE accreditation process? ＶＥ認証過程とは？ A. Each General, Advanced and Amateur Extra Class operator is automatically accredited as a VE when the license is granted B. The amateur operator must pass a VE examination administered by the FCC Enforcement Bureau C. The prospective VE obtains accreditation from a VE team D. Each VEC ensures that its Volunteer Examiner applicants meet FCC requirements to serve as VEs 　　ＶＥ申請者がＶＥとして活動する為のＦＣＣの要求事項を満たしているとＶＥＣが確認する。 E1F13 (A) [97.509(c)] Where must the VE team be stationed while administering an examination? 試験を監督する間、ＶＥチームは何処に詰めるか？ A. All administering VEs must be present and observing the examinees throughout the entire examination 　　監督するＶＥは全員試験全体にわたって在室し、受験者に注意を払わなければならない。 B. The VEs must leave the room after handing out the exam(s) to allow the examinees to concentrate on the exam material C. The VEs may be elsewhere provided at least one VE is present and is observing the examinees throughout the entire examination D. The VEs may be anywhere as long as they each certify in writing that examination was administered properly E1F14 (C) [97.509(c)] Who is responsible for the proper conduct and necessary supervision during an amateur operator license examination session? アマチュア従事者免許試験中、必要な監督と正しい手続きの責任を持つ者は？ A. The VEC coordinating the session B. The FCC C. The administering VEs 　　監督しているＶＥ。 D. The VE session manager E1F15 (B) [97.509(c)] What should a VE do if a candidate fails to comply with the examiner's instructions during an amateur operator license examination? アマチュア従事者免許試験中に受験者が試験官の指導に従わない場合は？ A. Warn the candidate that continued failure to comply will result in termination of the examination B. Immediately terminate the candidate's examination 　　即刻試験中止。 C. Allow the candidate to complete the examination, but invalidate the results D. Immediately terminate everyone's examination and close the session E1F16 (A) [97.509(k)] What special procedures must a VE team follow for an examinee with a physical disability? 体の不自由な受験者にＶＥが取らなければならない手続きは？ A. A special procedure that accommodates the disability 　　障害が支障にならないような特別な手続き。 B. A special procedure specified by the coordinating VEC C. A special procedure specified by a physician D. None; the VE team does not have to provide special procedures E1F17 (A) [97.509(d)] To which of the following examinees may a VE not administer an examination? ＶＥが試験を受けさせることが出来ない受験者は？ A. The VE's close relatives as listed in the FCC rules 　　ＦＣＣ規則にリストされているようなＶＥの近親者 B. Acquaintances of the VE C. Friends of the VE D. There are no restrictions as to whom a VE may administer an examination E1F18 (A) [97.509(e)] What may be the penalty for a VE who fraudulently administers or certifies an examination? 試験を不正に受けさせたり認証したＶＥに対する罰則は？ A. Revocation of the VE's amateur station license grant and the suspension of the VE's amateur operator license grant 　　ＶＥのアマチュア局免許の取消しとアマチュア従事者免許の停止。 B. A fine of up to $1000 per occurrence C. A sentence of up to one year in prison D. All of these choices are correct E1F19 (C) [97.509(h)] What must the VE team do with your test papers when you have finished this examination? ＶＥチームは試験終了時にテスト用紙をどのようにするか？ A. The VE team must collect them for grading at a later date B. The VE team must collect and send them to the coordinating VEC for grading C. The VE team must collect and grade them immediately 　　ＶＥチームは試験用紙を回収して直ちに採点する。 D. The VE team must collect and send them to the FCC for grading E1F20 (D) [97.519(b)] What action must the coordinating VEC complete within 10 days of collecting the information from an examination session? 試験の結果を回収して１０日以内にＶＥＣがやらなくてはならない事は？ A. Screen collected information 　　回収した結果の審査。 B. Resolve all discrepancies and verify that the VEs' certifications are properly completed 　　不具合点の解決とＶＥ認証が正しく完了した証明。 C. For qualified examinees, forward electronically all required data to the FCC 　　合格者の必要な全てのデータを電子的にＦＣＣへ廻送する。 D. All of these choices are correct 　　全て正しい。 E1F21 (D) [97.509(i)] What must the VE team do if an examinee scores a passing grade on all examination elements needed for an upgrade or new license? 受験者が昇級や新規免許に必要な全ての試験エレメントに合格点を取ったらＶＥチームは何をするか？ A. Photocopy all examination documents and forwards them to the FCC for processing B. Notify the FCC that the examinee is eligible for a license grant C. Issue the examinee the new or upgrade license D. Three VEs must certify that the examinee is qualified for the license grant and that they have complied with the VE requirements 　　３人のＶＥが、受験者が免許を受ける用件を満たしている、自分たちはＶＥ規則を遵守したと宣誓する。 E1F22 (A) [97.509(j)] What must the VE team do if the examinee does not score a passing grade on the examination? 受験者が試験に合格点を取らなかったらＶＥチームは何をするか？ A. Return the application document to the examinee and inform the examinee of the grade 　　受験者に申請書類を返し、点数を教える。 B. Return the application document to the examinee C. Inform the examinee that he or she did not pass D. Explain how the incorrect questions should have been answered E1F23 (A) [97.519(d)(3)] What are the consequences of failing to appear for readministration of an examination when so directed by the FCC? ＦＣＣの指示に関わらず、再試験に現れなったら？ A. The licensee's license will be cancelled and a new license will be issued that is consistent with examination elements not invalidated 　　免許人の免許は取り消され、取り消されなかった試験エレメントに対する新しい免許が発行される。 B. The licensee must pay a monetary fine C. The licensee is disqualified from any future examination for an amateur operator license grant D. The person may be sentenced to incarceration E1F24 (A) [97.527] What are the types of out-of-pocket expenses for which the FCC rules authorize a VE and VEC to accept reimbursement? ＦＣＣがＶＥやＶＥＣに清算を許可している当座出費とは？ A. Preparing, processing, administering and coordinating an examination for an amateur radio license 　　準備、処理､監督、および､試験のアレンジメント費用。 B. Teaching an amateur operator license examination preparation course C. None; a VE must never accept any type of reimbursement D. Providing amateur operator license examination preparation training materials E1F25 (A) [97.509(e), 97.527] How much reimbursement may the VE team and VEC accept for preparing, processing, administering and coordinating an examination? 準備、処理､監督、および､試験のアレンジメント費用としてＶＥチームやＶＥＣが受け取ることが出来る清算額は？ A. Actual out-of-pocket expenses 　　実際に使われた当座の出費。 B. Up to the national minimum hourly wage times the number of hours spent providing the services C. Up to the maximum fee per examinee announced by the FCC annually D. As much as the examinee is willing to donate E1F26 (C) [97.505(a)(6)] What amateur operator license examination credit must be given for a valid Certificate of Successful Completion of Examination (CSCE)? 有効な試験合格証に与えられるアマチュア従事者免許試験クレジットは？ A. Only the written elements the CSCE indicates the examinee passed with in the previous 365 days B. Only the telegraphy elements the CSCE indicates the examinee passed within the previous 365 days C. Each element the CSCE indicates the examinee passed within the previous 365 　　ＣＳＣＥが示す、過去３６５日以内に受験者が合格した各エレメント。 days D. None E1F27 (C) [97.301(e)] For what period of time does a Technician class licensee, who has just been issued a CSCE for having passed a 5 WPM Morse code examination, have authority to operate on the Novice/Technician HF subbands? ５ＷＰＭモールス符号試験合格のＣＳＣＥを発行されたばかりのテクニシャン級免許人が ノビス／テクニシャンＨＦサブバンドで運用する権限を持つ期間は？ A. 365 days from the examination date as indicated on the CSCE B. 1 year from the examination date as indicated on the CSCE C. Indefinitely, so long as the Technician license remains valid 　　テクニシャン免許が有効である限り無期限。 D. 5 years plus a 5-year grace period from the examination date as indicated on the CSCE E1F28 (A) [97.505(a)(6)] What period of time does a Technician class licensee, who has just been issued a CSCE for having passed a 5 WPM Morse code examination, have in order to use this credit toward a license upgrade? ５ＷＰＭモールス符号試験合格のＣＳＣＥを発行されたばかりのテクニシャン級免許人が このクレジットを上級免許更新に使うことの出来る期間は？ A. 365 days from the examination date as indicated on the CSCE 　　ＣＳＣＥに示してある試験日から３６５日以内。 B. 15 months from the examination date as indicated on the CSCE C. There is no time limit, so long as the Technician license remains valid D. 5 years plus a 5-year grace period from the examination date as indicated on the CSCE E1G Certification of external RF power amplifiers and external RF power amplifier kits; Line A; National Radio Quiet Zone; business communications; definition and operation of spread spectrum; auxiliary station operation E1G01 (B) [97.315(c)] What does it mean if an external RF amplifier is listed on the FCC database as certificated for use in the amateur service? ＦＣＣのデータベースにアマチュア運用に使用を認可と掲載されている外部ＲＦアンプは？ A. An RF amplifier of that model may be used in any radio service B. That particular RF amplifier model may be marketed for use in the amateur service 　　この特定のＲＦアンプ型式はアマチュア運用に使う為市販可能。 C. All similar models of RF amplifiers produced by other manufacturers may be marketed D. All models of RF amplifiers produced by that manufacturer may be marketed E1G02 (B)[97.317(a)(3)] Which of the following is one of the standards that must be met by an external RF power amplifier if it is to qualify for a grant of Certification? 認可用件を満たす為に外部ＲＦパワーアンプがクリアしなければならない事は？ A. It must have a time-delay to prevent it from operating continuously for more than ten minutes B. It must satisfy the spurious emission standards when driven with at least 50W mean RF power (unless a higher drive level is specified) 最低で５０Ｗ平均ＲＦ出力で稼動する時、スプリアス輻射の基準を満たす事。 C. It must not be capable of modification without voiding the warranty D. It must exhibit no more than 6dB of gain over its entire operating range E1G03 (A) [97.315(b)(5)] Under what condition may an equipment dealer sell an external RF power amplifier capable of operation below 144 MHz if it has not been granted FCC certification? ＦＣＣ認可の下りていない１４４ＭＨ以下で運用可能な外部ＲＦパワーアンプを装置販売店が販売出来るのは？ A. It was purchased in used condition from an amateur operator and is sold to another amateur operator for use at that operator's station アマチュア従事者から中古品として購入し、他のアマチュア従事者にそのアマチュア局で使用する為に販売される時。 B. The equipment dealer assembled it from a kit C. It was imported from a manufacturer in a country that does not require certification of RF power amplifiers D. It was imported from a manufacturer in another country, and it was certificated by that country's government E1G04 (A) [97.3(a)(32)] Which of the following geographic descriptions approximately describes Line A? ラインＡの大まかな地理的説明は？ A. A line roughly parallel to, and south of, the US-Canadian border 　　米国とカナダ国境の南側でほぼ平行なライン。 B. A line roughly parallel to, and west of, the US Atlantic coastline C. A line roughly parallel to, and north of, the US-Mexican border and Gulf coastline D. A line roughly parallel to, and east of, the US Pacific coastline E1G05 (D) [97.303(f)(1)] Amateur stations may not transmit in which frequency segment if they are located north of Line A? ラインＡの北側に位置するアマチュア局が送信が許可されていない周波数範囲は？ A. 21.225-21.300 MHz B. 53-54 MHz C. 222-223 MHz D. 420-430 MHz E1G06 (C) [97.3 (a)(32)] What is the National Radio Quiet Zone? 米国電波静寂地帯とは？ A. An area in Puerto Rico surrounding the Aricebo Radio Telescope B. An area in New Mexico surrounding the White Sands Test Area C. An Area in Maryland, West Virginia and Virginia surrounding the National Radio Astronomy Observatory 　　米国電波天文台の周囲のメリーランド、ウェストバージニア、および､バージニア地域。 D. An area in Florida surrounding Cape Canaveral E1G07 (A) [97.203(e)] What type of automatically controlled amateur station must not be established in the National Radio Quiet Zone before the licensee gives written notification to the National Radio Astronomy Observatory? 米国電波天文台に文書で通知する前に米国電波静寂地帯に設置してはいけない自動制御のアマチュア局は？ A. Beacon station 　　ビーコン局。 B. Auxiliary station C. Repeater station D. Earth station E1G08 (D) [97.113(a)(2)] When may the control operator of a repeater accept payment for providing communication services to another party? リピーターのコントロール運用者が第三者の運用に便宜を図ったことに対する報酬を受け取るのは？ A. When the repeater is operating under portable power B. When the repeater is operating under local control C. During Red Cross or other emergency service drills D. Under no circumstances 　　いかなる場合もだめ。 E1G09 (D) [97.113(a)(3)] When may an amateur station send a message to a business? アマチュア局が仕事先に通信を送るのは？ A. When the total money involved does not exceed $25 B. When the control operator is employed by the FCC or another government agency C. When transmitting international third-party communications D. When neither the amateur nor his or her employer has a pecuniary interest in the communications 　　そのアマチュア、又、その雇用者が通信によって利益を受けない時。 E1G10 (A) [97.113] Which of the following types of amateur operator-to-amateur operator communication are prohibited? アマチュア従事者からアマチュア従事者への通信が禁止されているのは？ A. Communications transmitted for hire or material compensation, except as otherwise provided in the rules 　　法律に別段の決まりが或る場合を除き、雇用、金銭取引の為に送信される通信。 B. Communication that has a political content C. Communication that has a religious content D. Communication in a language other English E1G11 (C) [97.3(c)(8)] What is the term for emissions using bandwidth-expansion modulation? 帯域拡張変調を使う放射は？ A. RTTY B. Image C. Spread spectrum 　　スプレッドスペクトラム。 D. Pulse E1G12 (D) [97.311(a)] FCC-licensed amateur stations may use spread spectrum (SS) emissions to communicate under which of the following conditions? ＦＣＣが免許したアマチュア局がスプレッドスペクトラム放射を使って通信するのは？ A. When the other station is in an area regulated by the FCC 　　相手局がＦＣＣによって規制される地域に位置する。 B. When the other station is in a country permitting SS communications 　　相手局がＳＳ通信を許可している国に位置している。 C. When the transmission is not used to obscure the meaning of any communication 　　送信が通信の内容を隠す為に使われない。 D. All of these choices are correct 　　全て正しい。 E1G13 (C) [97.311(d)] Under any circumstance, what is the maximum transmitter power for an amateur station transmitting emission type SS communications? ＳＳ通信の電波を送信するアマチュア局の最大送信出力は？ A. 1 W B. 1.5 W C. 100 W D. 1.5 kW E1G14 (D) [97.109(c)] What of the following is a use for an auxiliary station? 副次局の使用法は？ A. To provide a point-to-point communications uplink between a control point and its associated remotely controlled station 　　コントロールポイントとその遠隔操作局間のポイント間通信アップリンクとして。 B. To provide a point-to-point communications downlink between a remotely controlled station and its control point 　　コントロールポイントとその遠隔操作局間のポイント間通信ダウンリンクとして。 C. To provide a point-to-point control link between a control point and its associated remotely controlled station 　　コントロールポイントとその遠隔操作局間のポイント間コントロールリンクとして。 D. All of these choices are correct 　　全て正しい。 SUBELEMENT E2 -- OPERATING PROCEDURES [5 Exam Questions - 5 Groups] E2A Amateur Satellites: orbital mechanics; frequencies available for satellite operation; satellite hardware; satellite operations E2A01 (C) What is the direction of an ascending pass for an amateur satellite? アマチュア衛星の上昇経路の方向は？ A. From west to east B. From east to west C. From south to north 　　南から北。 D. From north to south E2A02 (A) What is the direction of a descending pass for an amateur satellite? アマチュア衛星の下降経路の方向は？ A. From north to south 　　北から南。 B. From west to east C. From east to west D. From south to north E2A03 (C) What is the period of an amateur satellite? アマチュア衛星の周期とは？ A. The point of maximum height of a satellite's orbit B. The point of minimum height of a satellite's orbit C. The amount of time it takes for a satellite to complete one orbit 　　衛星が軌道を一周するのに掛かる時間。 D. The time it takes a satellite to travel from perigee to apogee E2A04 (D) What are the receiving and retransmitting frequency bands used for Mode V/H in amateur satellite operations? アマチュア衛星運用でＶ／Ｈモードで使われる受信と送信周波数帯は？ A. Satellite receiving on Amateur bands in the range of 21 to 30 MHz and retransmitting on 144 to 148 MHz B. Satellite receiving on 435 to 438 MHz and retransmitting on 144 to 148 MHz C. Satellite receiving on 435 to 438 MHz and retransmitting on Amateur bands in the range of 21 to 30 MHz D. Satellite receiving on 144 to 148 MHz and retransmitting on Amateur bands in the range of 21 to 30 MHz 　　衛星が１４４から１４８ＭＨｚで受信して、２１から３０ＭＨｚ領域のアマチュア帯で中継する。 E2A05 (B) What are the receiving and retransmitting frequency bands used for Mode U/V in amateur satellite operations? アマチュア衛星運用でＵ／Ｖモードで使われる受信と送信周波数帯は？ A. Satellite receiving on Amateur bands in the range of 21 to 30 MHz and retransmitting on 144 to 148 MHz B. Satellite receiving on 435 to 438 MHz and retransmitting on 144 to 148 MHz 　　衛星が４３５から４３８ＭＨｚで受信して、１４４から１４８ＭＨｚで中継する。 C. Satellite receiving on 435 to 438 MHz and retransmitting on Amateur bands in the range of 21 to 30 MHz D. Satellite receiving on 144 to 148 MHz and retransmitting on Amateur bands in the range of 21 to 30 MHz E2A06 (C) What are the receiving and retransmitting frequency bands used for Mode V/U in amateur satellite operations? アマチュア衛星運用でＶ／Ｕモードで使われる受信と送信周波数帯は？ A. Satellite receiving on 435 to 438 MHz and retransmitting on 144 to 148 MHz B. Satellite receiving on 144 to 148 MHz and retransmitting on Amateur bands in the range of 21 to 30 MHz C. Satellite receiving on 144 to 148 MHz and retransmitting on 435 to 438 MHz 　　衛星が１４４から１４８ＭＨｚで受信して、４３５から４３８ＭＨｚで中継する。 D. Satellite receiving on 435 to 438 MHz and transmitting on 21 to 30 MHz E2A07 (D) What are the receiving and retransmitting frequency bands used for Mode L/U in amateur satellite operations? アマチュア衛星運用でＬ／Ｕモードで使われる受信と送信周波数帯は？ A. Satellite receiving on 435 to 438 MHz and retransmitting on 21 to 30 MHz B. Satellite receiving on Amateur bands in the range of 21 to 30 MHz and retransmitting on 435 to 438 MHz C. Satellite receiving on 435 to 438 MHz and retransmitting on 1.26 to 1.27 GHz D. Satellite receiving on 1.26 to 1.27 GHz and retransmitting on 435 to 438 MHz 　　衛星が１．２６から１．２７ＧＨｚで受信して、４３５から４３８ＭＨｚで中継する。 E2A08 (B) What is a linear transponder? リニアトランスポンダーとは？ A. A repeater that passes only linear or CW signals B. A device that receives and retransmits signals of any mode in a certain passband 　　決まったパスバンドで全てのモードの信号を受信し中継する装置。 C. An amplifier that varies its output linearly in response to input signals D. A device that responds to satellite telecommands and is used to activate a linear sequence of events E2A09 (D) What is the name of the effect that causes the downlink frequency of a satellite to vary by several kHz during a low-earth orbit? 低地球軌道の間、衛星のダウンリンク周波数が　数ＫＨｚ変化する原因は？ A. The Kepler effect B. The Bernoulli effect C. The Einstein effect D. The Doppler effect 　　ドップラー効果。 E2A10 (A) Why may the received signal from an amateur satellite exhibit a fairly rapid pulsed fading effect? アマチュア衛星から受信する信号が比較的早いパルス減衰効果を示すのは？ A. Because the satellite is rotating 　　衛星が回転しているから。 B. Because of ionospheric absorption C. Because of the satellite's low orbital altitude D. Because of the Doppler effect E2A11 (B) What type of antenna can be used to minimize the effects of spin modulation and Faraday rotation? スピン変調やファラデー回転による影響を小さくするアンテナは？ A. A nonpolarized antenna B. A circularly polarized antenna 　　円偏波アンテナ。 C. An isotropic antenna D. A log-periodic dipole array E2A12 (D) How may the location of a satellite at a given time be predicted? 任意時刻の衛星の位置を予測するには？ A. By means of the Doppler data for the specified satellite B. By subtracting the mean anomaly from the orbital inclination C. By adding the mean anomaly to the orbital inclination D. By means of the Keplerian elements for the specified satellite 　　特定の衛星のケプラーエレメントを使って。 E2B Television: fast scan television (FSTV) standards; slow scan television (SSTV) standards; facsimile (fax) communications E2B01 (A) How many times per second is a new frame transmitted in a fast-scan television system? ｆｓｔｖで毎秒送信されるフレーム数は？ A. 30 B. 60 C. 90 D. 120 E2B02 (C) How many horizontal lines make up a fast-scan television frame? ｆｓｔｖフレームの水平ライン数は？ A. 30 B. 60 C. 525 D. 1050 E2B03 (D) How is the interlace scanning pattern generated in a fast-scan television system? ｆｓｔｖのインターレーススキャニングはどのように作動させるか？ A. By scanning the field from top to bottom B. By scanning the field from bottom to top C. By scanning from left to right in one field and right to left in the next D. By scanning odd numbered lines in one field and even numbered ones in the next 　　奇数ラインを片方のフィールドでスキャンし、奇数ラインをもう片方のフィールドでスキャンする。 E2B04 (B) What is blanking in a video signal? ビデオ信号でブランキングとは？ A. Synchronization of the horizontal and vertical sync pulses B. Turning off the scanning beam while it is traveling from right to left and from bottom to top 　　スキャンイングビームが右から左、底から上まで移動する間スキャニングビームを停止する事。 C. Turning off the scanning beam at the conclusion of a transmission D. Transmitting a black and white test pattern E2B05 (D) What is the bandwidth of a vestigial sideband AM fast-scan television transmission? 側波ＡＭｆｓｔｖ送信の帯域幅は？ A. 3 kHz B. 10 kHz C. 25 kHz D. 6 MHz E2B06 (C) What is the standard video level, in percent PEV, for black in amateur fast scan television? アマチュアｆｓｔｖの黒の標準ビデオレベルは％ＰＥＶでいくら？ A. 0% B. 12.5% C. 70% D. 100% E2B07 (C) What is the standard video level, in percent PEV, for blanking in amateur fast scan television? アマチュアｆｓｔｖのブランキングの標準ビデオレベルは％ＰＥＶでいくら？ A. 0% B. 12.5% C. 75% D. 100% E2B08 (A) Which of the following is NOT a common method of transmitting accompanying audio with amateur fast-scan television? アマチュアｆｓｔｖの音声を送信する一般的な方法でないものは？ A. Amplitude modulation of the video carrier 　　ビデオ搬送波の振幅変調。 B. Frequency-modulated sub-carrier C. A separate VHF or UHF audio link D. Frequency modulation of the video carrier E2B09 (D) What is facsimile? ファクシミリとは？ A. The transmission of characters by radioteletype that form a picture when printed B. The transmission of still pictures by slow-scan television C. The transmission of video by amateur television D. The transmission of printed pictures for permanent display on paper 　　紙に画像を印刷する送信。 E2B10 (A) What is the modern standard scan rate for a fax image transmitted by an amateur station? アマチュア局から送信されるファックス画像の標準スキャンレートは？ A. 240 lines per minute 　　毎分２４０行。 B. 50 lines per minute C. 150 lines per second D. 60 lines per second E2B11 (B) What is the approximate transmission time per frame for a fax picture transmitted by an amateur station at 240 lpm? アマチュア局から毎分２４０行で送信されるファックス画像のフレーム当りの送信時間は？ A. 6 minutes B. 3.3 minutes 　　３．３分。 C. 6 seconds D. 1/60 second E2B12 (D) What information is sent by slow-scan television transmissions? ｓｓｔｖで送信される情報は？ A. Baudot or ASCII characters that form a picture when printed B. Pictures for permanent display on paper C. Moving pictures D. Still pictures 　　静止画像。 E2B13 (C) How many lines are commonly used in each frame on an amateur slow-scan color television picture? アマチュアｓｓｔｖ画像のフレームで一般的に使われるライン数は？ A. 30 to 60 B. 60 or 100 C. 128 or 256 D. 180 or 360 E2B14 (C) What is the audio frequency for black in an amateur slow-scan television picture? アマチュアｓｓｔｖ画像で黒の音声周波数は？ A. 2300 Hz B. 2000 Hz C. 1500 Hz D. 120 Hz E2B15 (D) What is the audio frequency for white in an amateur slow-scan television picture? アマチュアｓｓｔｖ画像で白の音声周波数は？ A. 120 Hz B. 1500 Hz C. 2000 Hz D. 2300 Hz E2B16 (B) What is the standard video level, in percent PEV, for white in an amateur fast- scan television transmission? アマチュアｆｓｔｖの白の標準ビデオレベルは％ＰＥＶでいくら？ A. 0% B. 12.5% C. 70% D. 100% E2B17 (A) Which of the following is NOT a characteristic of FMTV (Frequency-Modulated Amateur Television) as compared to vestigial sideband AM television? 側波ＡＭテレビと比べて、ＦＭテレビの特徴でないものは？ A. Immunity from fading due to limiting 　　制限による減衰が起こらない。 B. Poor weak signal performance C. Greater signal bandwidth D. Greater complexity of receiving equipment E2B18 (B) What is the approximate bandwidth of a slow-scan TV signal? ｓｓｔｖ信号の帯域幅は？ A. 600 Hz B. 2 kHz C. 2 MHz D. 6 MHz E2B19 (D) Which of the following systems is used to transmit high-quality still images by radio? 無線で高品質静止画像を送信するのは？ A. AMTOR B. Baudot RTTY C. AMTEX D. Facsimile 　　ファクシミリ。 E2B20 (C) What special restrictions are imposed on fax transmissions? ファックス送信に対する特別な制限とは？ A. None; they are allowed on all amateur frequencies B. They are restricted to 7.245 MHz, 14.245 MHz, 21.345 MHz, and 28.945 MHz C. They are allowed in phone band segments if their bandwidth is no greater than that of a voice signal of the same modulation type 　　音声帯域区分の中で、同じ変調方式の音声信号よりも帯域幅が広がらない時許可される。 D. They are not permitted above 54 MHz E2C Contest and DX operating; spread-spectrum transmissions; automatic HF forwarding; selecting your operating frequency E2C01 (A) When operating during a contest, which of these standards should you generally follow? コンテスト運用中、守らなければならない事は？ A. Always listen before transmitting, be courteous and do not cause harmful interference to other communications 　　送信前に聞く事、礼儀正しく、他の通信に有害混信を与えない事。 B. Always reply to other stations calling CQ at least as many times as you call CQ C. When initiating a contact, always reply with the call sign of the station you are calling followed by your own call sign D. Always include your signal report, name and transmitter power output in any exchange with another station E2C02 (B) What is one of the main purposes for holding on-the-air operating contests? 無線運用コンテストを開催する趣旨の一つは？ A. To test the dollar-to-feature value of station equipment during difficult operating circumstances B. To enhance the communicating and operating skills of amateur operators in readiness for an emergency 　　非常時に備えて、アマチュア従事者の通信及び、運用技術を磨く事。 C. To measure the ionospheres capacity for refracting RF signals under varying conditions D. To demonstrate to the FCC that amateur station operation is possible during difficult operating circumstances E2C03 (C) Which of the following is typical of operations during an international amateur DX contest? 国際アマチュアＤＸコンテスト期間中の一般的な運用は？ A. Calling CQ is always done on an odd minute and listening is always done on an even minute B. Contacting a DX station is best accomplished when the WWV K index is above a reading of 8 C. Some DX operators use split frequency operations (transmitting on a frequency different from the receiving frequency) 　　ＤＸ運用者の中には、スプリット周波数で運用する者も在る（受信周波数が送信周波数と異なる）。 D. DX contacts during the day are never possible because of known band attenuation from the sun E2C04 (D) If a DX station asks for your grid square locator, what should be your reply? ＤＸ局が相手局のグリッドスクウェア位置を聞いてきたら何と答えるか？ A. The square of the power fed to the grid of your final amplifier and your current city, state and country B. The DX station's call sign followed by your call sign and your RST signal report C. The subsection of the IARU region in which you are located based upon dividing the entire region into a grid of squares 10 km wide D. Your geographic Maidenhead grid location (e.g., FN31AA) based on your current latitude and longitude 　　局の緯度及び、経度に基づく地理上のメイデンヘッドグリッド位置。 E2C05 (A) What does a Maidenhead gridsquare refer to? メイデンヘッドスクウェアとは？ A. A two-degree longitude by one-degree latitude square, as part of a world wide numbering system 　　世界共通の数字付けシステムである経度２度緯度１度の四方形。 B. A one-degree longitude by one degree latitude square, beginning at the South Pole C. An antenna made of wire grid used to amplify low-angle incoming signals while reducing high-angle incoming signals D. An antenna consisting of a screen or grid positioned directly beneath the radiating element E2C06 (C) During a VHF/UHF contest, in which band section would you expect to find the highest level of contest activity? ＶＨＦ／ＵＨＦコンテスト中、最もコンテストの活性が高いのはどの帯域領域？ A. At the top of each band, usually in a segment reserved for contests B. In the middle of each band, usually on the national calling frequency C. In the weak signal segment of the band, with most of the activity near the calling frequency 　　帯域の弱い信号領域、殆どの交信が呼び出し周波数付近。 D. In the middle of the band, usually 25 kHz above the national calling frequency E2C07 (C) If you are in the US calling a station in Texas on a frequency of 1832 kHz and a station replies that you are in the window, what does this mean? 米国内で周波数１８３２ＫＨｚでテキサスの局を呼んだら、ウィンドーの中だと言われた、これは？ A. You are operating out of the band privileges of your license B. You are calling at the wrong time of day to be within the window of frequencies that can be received in Texas at that time C. You are transmitting in a frequency segment that is reserved for international DX contacts by gentlemen's agreement 　　暗黙の了解で国際ＤＸ交信用とされている周波数領域で送信している。 D. Your modulation has reached an undesirable level and you are interfering with another contact E2C08 (A) Why are received spread-spectrum signals so resistant to interference? 受信されたスプレッドスペクトラム信号が混信に強い訳は？ A. Signals not using the spectrum-spreading algorithm are suppressed in the receiver スプレッドスペクトラムのアルゴリズムを使っていない信号は、受信機で抑制される。 B. The high power used by a spread-spectrum transmitter keeps its signal from being easily overpowered C. The receiver is always equipped with a special digital signal processor (DSP) interference filter D. If interference is detected by the receiver it will signal the transmitter to change frequencies E2C09 (D) How does the spread-spectrum technique of frequency hopping (FH) work? スプレッドスペクトラムのテクニックである周波数ホッピングはどのような仕組み？ A. If interference is detected by the receiver it will signal the transmitter to change frequencies B. If interference is detected by the receiver it will signal the transmitter to wait until the frequency is clear C. A pseudo-random binary bit stream is used to shift the phase of an RF carrier very rapidly in a particular sequence D. The frequency of the transmitted signal is changed very rapidly according to a particular sequence also used by the receiving station 　　送信信号の周波数は受信側でも使われる、決まったシーケンスで非常に高速に変化されられる。 E2C10 (A) While participating in an HF contest, how should you attempt to contact a station calling CQ and stating that he is listening on another specific frequency? ＨＦコンテストに参加している時、ＣＱを出して、他の決まった周波数で 受信していると言っている局とコンタクトするには？ A. By sending your full call sign on the listening frequency specified 　　言われた受信周波数でフルコールサインを送信する。 B. By sending only the suffix of your call sign on the listening Frequency C. By sending your full call sign on the frequency on which you heard the station calling CQ D. By sending only the suffix of your call sign on the frequency on which you heard the station calling CQ E2C11 (A) When operating SSB in a VHF contest, how should you attempt to contact a station calling CQ while a pileup of other stations are also trying to contact the same station? ＶＨＦコンテストでＳＳＢ運用中に、他局もコンタクトしようとパイルアップになっている ＣＱを出している局にコンタクトするには？ A. By sending your full call sign after the distant station transmits QRZ 　　その局がＱＲＺを送信したらフルコールサインを送る。 B. By sending only the last letters of your call sign after the distant station transmits QRZ C. By sending your full call sign and grid square as soon as you hear the distant station transmit QRZ D. By sending the call sign of the distant station three times, the words "this is", then your call sign three times E2C12 (B) In North America during low sunspot activity, signals from Europe become weak and fluttery across an entire HF band two to three hours after sunset, what might help to contact other European DX stations? 低黒点活動期の北米では、日没後２、３時間全てのＨＦ帯でヨーロッパからの信号は 弱く平坦になる。ヨーロッパのＤＸ局とコンタクトするには？ A. Switch to a higher frequency HF band, because the MUF has increased B. Switch to a lower frequency HF band because the MUF has decreased 　　ＭＵＦが下がったので、低い周波数のＨＦ帯に切り替える。 C. Wait 90 minutes or so for the signal degradation to pass D. Wait 24 hours before attempting another communication on the band E2D Operating VHF / UHF digital modes: packet clusters; digital bulletin boards; Automatic Position Reporting System (APRS) E2D01 (B) What does CMD: mean when it is displayed on the video monitor of a packet station? パケット局のビデオモニターにＣＭＤ：が表示された意味は？ A. The TNC is ready to exit the packet terminal program B. The TNC is in command mode, ready to receive instructions from the keyboard 　　ＴＮＣはコマンドモードで、キーボードからの命令を待っている。 C. The TNC will exit to the command mode on the next keystroke D. The TNC is in KISS mode running TCP/IP, ready for the next command E2D02 (A) What is a Packet Cluster Bulletin Board? パケットクラスター掲示板とは？ A. A packet bulletin board devoted primarily to serving a special interest group 　　主に特別なグループが使う為のパケット掲示板。 B. A group of general-purpose packet bulletin boards linked together in a cluster C. A special interest cluster of packet bulletin boards devoted entirely to packet radio computer communications D. A special interest telephone/modem bulletin board devoted to amateur DX operations E2D03 (C) In comparing HF and 2-meter packet Operations, which of the following is NOT true? ＨＦと２ｍパケット運用を比べて、正しくないのは？ A. HF packet typically uses an FSK signal with a data rate of 300 bauds; 2- meter packet uses an AFSK signal with a data rate of 1200 bauds B. HF packet and 2-meter packet operations use the same code for information exchange C. HF packet is limited to Amateur Extra class amateur licensees; 2-meter packet is open to all but Novice Class amateur licensees 　　ＨＦパケットは、アマチュアエクストラ級アマチュア免許人に限られる； 　　２ｍパケットは、ノビス級アマチュア免許人以外は誰でも使える。 D. HF packet operations are limited to CW/Data-only band segments; 2-meter packet is allowed wherever FM operations are allowed E2D04 (C) What is the purpose of a digital store and forward on an Amateur satellite? アマチュア衛星のデジタル保存及び、回送の目的は？ A. To stockpile packet TNCs and other digital hardware to be distributed to RACES operators in the event of an emergency B. To relay messages across the country via a network of HF digital stations C. To store messages in an amateur satellite for later download by other 　　アマチュア衛星に電文を保存して他の局が後でダウンロードする。 stations D. To store messages in a packet digipeater for relay via the Internet E2D05 (B) Which of the following techniques is normally used by low-earth orbiting digital satellites to relay messages around the world? 世界中で電文を中継する低地球軌道デジタル衛星で普通使われるテクニックは？ A. Digipeating B. Store and forward 　　保存と回送。 C. Multi-satellite relaying D. Node hopping E2D06 (B) What is the common 2-meter APRS frequency? ２ｍＡＰＲＳの一般的な周波数は？ A. 144.20 MHz B. 144.39 MHz C. 145.02 MHz D. 146.52 MHz E2D07 (A) Which of the following digital protocols does APRS use? ＡＰＲＳが使うデジタルプロトコルは？ A. AX.25 B. 802.11 C. PACTOR D. AMTOR E2D08 (D) Which of the following types of packet frames is used to transmit APRS beacon data? ＡＰＲＳビーコンデータを送信する為に使われるパケットフレームは？ A. Connect frames B. Disconnect frames C. Acknowledgement frames D. Unnumbered Information frames 　　数字の振られない情報フレーム。 E2D09 (D) Under clear communications conditions, which of these digital communications modes has the fastest data throughput? 通信状態の良い時、データのスループットが最も速いのは？ A. AMTOR B. 170-Hz shift, 45 baud RTTY C. PSK31 D. 300-baud packet 　　３００ボー、パケット。 E2D10 (C) How can an APRS station be used to help support a public service communications activity, such as a walk-a-thon? ヲークアソンのような公共活動通信を援助する為のＡＰＲＳ局の使われ方は？ A. An APRS station with an emergency medical technician can automatically transmit medical data to the nearest hospital B. APRS stations with General Personnel Scanners can automatically relay the participant numbers and time as they pass the check points C. An APRS station with a GPS unit can automatically transmit information to show the station's position along the course route 　　ＧＰＳユニットの在るＡＰＲＳ局は、コースのルート上の局の位置情報を自動的に送信出来る。 D. All of these choices are correct E2D11 (D) Which of the following data sources are needed to accurately transmit your geographical location over the APRS network? ＡＰＲＳネットワークで地理的位置を正確に送信する為に必要なデータソースは？ A. The NMEA-0183 formatted data from a Global Positioning System (GPS) satellite receiver 　　ＧＰＳ衛星受信機からのＮＭＥＡ−０１８３書式データ。 B. The latitude and longitude of your location, preferably in degrees, minutes and seconds, entered into the APRS computer software 　　ＡＰＲＳコンピューターソフトに入力された経度と緯度、度、分、秒が望ましい。 C. The NMEA-0183 formatted data from a LORAN navigation system 　　ＬＯＲＡＮナビシステムからのＮＭＥＡ−０１８３書式データ。 D. All of these choices are correct 　　全て正しい。 E2E Operating HF digital modes E2E01 (B) What is the most common method of transmitting data emissions below 30 MHz? ３０ＭＨｚ以下で最も一般的なデータ通信方式は？ A. DTMF tones modulating an FM signal B. FSK (frequency-shift keying) of an RF carrier 　　ＲＦ搬送波のＦＳＫ。 C. AFSK (audio frequency-shift keying) of an FM signal D. Key-operated on/off switching of an RF carrier E2E02 (A) What do the letters FEC mean as they relate to AMTOR operation? ＡＭＴＯＲ運用でＦＥＣとは？ A. Forward Error Correction B. First Error Correction C. Fatal Error Correction D. Final Error Correction E2E03 (C) How is Forward Error Correction implemented? ＦＥＣはどのように実行されるか？ A. By transmitting blocks of 3 data characters from the sending station to the receiving station, which the receiving station acknowledges B. By transmitting a special FEC algorithm which the receiving station uses for data validation C. By transmitting extra data that may be used to detect and correct transmission errors 　　送信エラーを発見して修正する為の追加データを送信する。 D. By varying the frequency shift of the transmitted signal according to a predefined algorithm E2E04 (A) If an oscilloscope is connected to a TNC or terminal unit and is displaying two crossed ellipses, one of which suddenly disappears, what would this indicate about the observed signal? ＴＮＣやターミナルユニットに接続されたオシロスコープで表示されていた交差した 楕円の片方が突然消えた。信号に何が起こったか？ A. The phenomenon known as selective fading has occurred 　　選択的減衰として知られる現象が起きた。 B. One of the signal filters has saturated C. The receiver should be retuned, as it has probably moved at least 5 kHz from the desired receive frequency D. The mark and space signal have been inverted and the receiving equipment has not yet responded to the change E2E05 (D) What is the name for a bulletin transmission system that includes a special header to allow receiving stations to determine if the bulletin has been previously received? 伝文を前に受信したかどうかが受信局に分かる為の特別なヘッダーを含む伝文送信システムの名前は？ A. ARQ mode A B. FEC mode B C. AMTOR D. AMTEX E2E06 (C) What is the most common data rate used for HF packet communications? ＨＦパケット通信で最も一般的に使われるデータレートは？ A. 48 bauds B. 110 bauds C. 300 bauds D. 1200 bauds E2E07 (B) What is the typical bandwidth of a properly modulated MFSK16 signal? 正しく変調されたＭＦＳＫ１６信号の一般的な帯域幅は？ A. 31 Hz B. 316 Hz C. 550 Hz D. 2 kHz E2E08 (B) Which of the following HF digital modes can be used to transfer binary files? バイナリーファイルの送信に使う事の出来るＨＦデジタルモードは？ A. Hellschreiber B. PACTOR C. RTTY D. AMTOR E2E09 (This question has been formally withdrawn by the QPC) E2E09 (A) 本問題はＱＰＣによって正式に削除された。 Which of the following HF digital modes does NOT include error detection and correction? A. PSK31 B. PACTOR C. CLOVER D. G-TOR E2E10 (This question has been formally withdrawn by the QPC) E2E10 (C) 本問題はＱＰＣによって正式に削除された。 Which of the following HF digital modes use Reed-Solomon coding? A. AMTOR B. RTTY C. PSK31 D. CLOVER E2E11 (D) What is the Baudot code? ボードット符号とは？ A. A code used to transmit data only in modern computer-based data systems using seven data bits B. A binary code consisting of eight data bits C. An alternate name for Morse code D. The International Telegraph Alphabet Number 2 (ITA2) which uses five data bits 　　５データビットを使う国際電信アルファベットナンバー２。 E2E12 (C) Which of these digital communications modes has the narrowest bandwidth? 帯域幅が一番狭いデジタル通信モードは？ A. AMTOR B. 170-Hz shift, 45 baud RTTY C. PSK31 D. 300-baud packet SUBELEMENT E3 -- RADIO WAVE PROPAGATION [3 Exam Questions - 3 Groups] E3A Earth-Moon-Earth (EME or moonbounce) communications; meteor scatter E3A01 (D) What is the maximum separation between two stations communicating by moonbounce? 月面反射によって通信している２局間の最大距離は？ A. 500 miles maximum, if the moon is at perigee B. 2000 miles maximum, if the moon is at apogee C. 5000 miles maximum, if the moon is at perigee D. Any distance as long as the stations have a mutual lunar window 　　局が相互に月面ウィンドー上にあればどんな距離でも良い。 E3A02 (B) What characterizes libration fading of an earth-moon-earth signal? 地球−月面−地球信号の減衰の特徴は？ A. A slow change in the pitch of the CW signal B. A fluttery irregular fading 　　平坦で不規則な減衰。 C. A gradual loss of signal as the sun rises D. The returning echo is several hertz lower in frequency than the transmitted signal E3A03 (A) When scheduling EME contacts, which of these conditions will generally result in the least path loss? ＥＭＥ交信を計画する時、パスロスが一番小さくなる条件は？ A. When the moon is at perigee 　　月が近日点にある時。 B. When the moon is full C. When the moon is at apogee D. When the MUF is above 30 MHz E3A04 (D) What type of receiving system is desirable for EME communications? ＥＭＥ通信に適した受信システムは？ A. Equipment with very low power output B. Equipment with very low dynamic range C. Equipment with very low gain D. Equipment with very low noise figures 　　雑音の少ない装置。 E3A05 (A) What transmit and receive time sequencing is normally used on 144 MHz when attempting an earth-moon-earth contact? 地球−月面ー地球交信を行う時、１４４ＭＨｚで一般的に使われる送受信の時間シーケンスは？ A. Two-minute sequences, where one station transmits for a full two minutes and then receives for the following two minutes ２分間送信して、続く２分間受信する２分シーケンス。 B. One-minute sequences, where one station transmits for one minute and then receives for the following one minute C. Two-and-one-half minute sequences, where one station transmits for a full 2.5 minutes and then receives for the following 2.5 minutes D. Five-minute sequences, where one station transmits for five minutes and then receives for the following five minutes E3A06 (C) What transmit and receive time sequencing is normally used on 432 MHz when attempting an EME contact? ＥＭＥ交信を４３２ＭＨｚで行う時に一般的に使われる送受信の時間シーケンスは？ A. Two-minute sequences, where one station transmits for a full two minutes and then receives for the following two minutes B. One-minute sequences, where one station transmits for one minute and then receives for the following one minute C. Two and one half minute sequences, where one station transmits for a full 2.5 minutes and then receives for the following 2.5 minutes ２．５分間送信して、続く２．５分間受信する２．５分シーケンス。 D. Five minute sequences, where one station transmits for five minutes and then receives for the following five minutes E3A07 (B) What frequency range would you normally tune to find EME stations in the 2-meter band? ２ｍ帯でＥＭＥ局を捜すにはどの周波数領域に同調するか？ A. 144.000 - 144.001 MHz B. 144.000 - 144.100 MHz C. 144.100 - 144.300 MHz D. 145.000 - 145.100 MHz E3A08 (D) What frequency range would you normally tune to find EME stations in the 70-cm band? ７０ｃｍ帯でＥＭＥ局を捜すにはどの周波数領域に同調するか？ A. 430.000 - 430.150 MHz B. 430.100 - 431.100 MHz C. 431.100 - 431.200 MHz D. 432.000 - 432.100 MHz E3A09 (A) When a meteor strikes the earth's atmosphere, a cylindrical region of free electrons is formed at what layer of the ionosphere? 流星が地球の大気に突入する時、自由電子が円筒状に発生する電離層帯は？ A. The E layer B. The F1 layer C. The F2 layer D. The D layer E3A10 (C) Which range of frequencies is well suited for meteor-scatter communications? 流星散乱通信に適した周波数領域は？ A. 1.8 - 1.9 MHz B. 10 - 14 MHz C. 28 - 148 MHz D. 220 - 450 MHz E3A11 (C) What transmit and receive time sequencing is normally used on 144 MHz when attempting a meteor-scatter contact? 流星散乱交信を行う時、１４４ＭＨｚで一般的に使われる送受信の時間シーケンスは？ A. Two-minute sequences, where one station transmits for a full two minutes and then receives for the following two minutes B. One-minute sequences, where one station transmits for one minute and then receives for the following one minute C. 15-second sequences, where one station transmits for 15 seconds and then receives for the following 15 seconds １５秒間送信して、続く１５秒間受信する１５秒シーケンス。 D. 30-second sequences, where one station transmits for 30 seconds and then receives for the following 30 seconds E3B Transequatorial; long path; gray line E3B01 (A) What is transequatorial propagation? 赤道横断電波伝播とは？ A. Propagation between two points at approximately the same distance north and south of the magnetic equator 　　地磁気赤道の南北等距離地点間電波伝播。 B. Propagation between two points at approximately the same latitude on the magnetic equator C. Propagation between two continents by way of ducts along the magnetic equator D. Propagation between two stations at the same latitude E3B02 (C) What is the approximate maximum range for signals using transequatorial propagation? 赤道横断電波伝播を使った信号の最大レンジは？ A. 1000 miles B. 2500 miles C. 5000 miles D. 7500 miles E3B03 (C) What is the best time of day for transequatorial propagation? 一日で赤道横断電波電波に一番適した時間は？ A. Morning B. Noon C. Afternoon or early evening 　　午後か夕方の早い時間。 D. Late at night E3B04 (A) What type of propagation is probably occurring if an HF beam antenna must be pointed in a direction 180 degrees away from a station to receive the strongest signals? 最も強い信号を受信する為ＨＦビームアンテナを相手局の方向から１８０°離した方角に 向けなければならない時どんな電波伝播が発生しているか？ A. Long-path 　　ロングパス。 B. Sporadic-E C. Transequatorial D. Auroral E3B05 (C) On what amateur bands can long-path propagation provide signal enhancement? ロングパス電波伝播が信号補強をする事の在るアマチュア帯域は？ A. 160 to 40 meters B. 30 to 10 meters C. 160 to 10 meters D. 6 meters to 2 meters E3B06 (B) What amateur band consistently yields long-path enhancement using a modest antenna of relatively high gain? 比較的ゲインの高い普通のアンテナで常にロングパス補強の起こるアマチュア帯域は？ A. 80 meters B. 20 meters C. 10 meters D. 6 meters E3B07 (D) What is the typical reason for hearing an echo on the received signal of a station in Europe while directing your HF antenna toward the station? ヨーロッパの局にＨＦアンテナを向けている時、受信信号にエコーが掛かる訳は？ A. The station's transmitter has poor frequency stability B. The station's transmitter is producing spurious emissions C. Auroral conditions are causing a direct and a long-path reflected signal to be received D. There are two signals being received, one from the most direct path and one from long-path propagation 　　ショートパスとロングパスの２つの信号を受信しているから。 E3B08 (D) What type of propagation is probably occurring if radio signals travel along the terminator between daylight and darkness? 昼間と夜間の境に沿って無線信号が伝わる時、起きていると考えられる電波伝播は？ A. Transequatorial B. Sporadic-E C. Long-path D. Gray-line 　グレイライン。 E3B09 (A) At what time of day is gray-line propagation most prevalent? 一日の内いつグレイライン電波伝播が良く起きるか？ A. Twilight, at sunrise and sunset 　　薄暮時、夜明けと日没時。 B. When the sun is directly above the location of the transmitting station C. When the sun is directly overhead at the middle of the communications path between the two stations D. When the sun is directly above the location of the receiving station E3B10 (B) What is the cause of gray-line propagation? グレイライン電波伝播の原因は？ A. At midday the sun, being directly overhead, superheats the ionosphere causing increased refraction of radio waves B. At twilight solar absorption drops greatly while atmospheric ionization is not weakened enough to reduce the MUF 　　薄暮時には、太陽からの吸収が急激に下降するが、大気の電離はＭＵＦを 　　下げるまでには弱まっていない。 C. At darkness solar absorption drops greatly while atmospheric ionization remains steady D. At mid afternoon the sun heats the ionosphere, increasing radio wave refraction and the MUF E3B11 (C) What communications are possible during gray-line propagation? グレイライン電波伝播の時、可能な通信は？ A. Contacts up to 2,000 miles only on the 10-meter band B. Contacts up to 750 miles on the 6- and 2-meter bands C. Contacts up to 8,000 to 10,000 miles on three or four HF bands 　　３か４のＨＦ帯域で８、０００〜１０、０００マイルの交信。 D. Contacts up to 12,000 to 15,000 miles on the 2 meter and 70 centimeter bands E3C Auroral propagation; selective fading; radio-path horizon; take-off angle over flat or sloping terrain; earth effects on propagation E3C01 (D) What effect does auroral activity have upon radio communications? 無線通信に及ぼすオーロラ活動の影響は？ A. The readability of SSB signals increases B. FM communications are clearer C. CW signals have a clearer tone D. CW signals have a fluttery tone 　　ＣＷ信号が平坦なトーンになる。 E3C02 (C) What is the cause of auroral activity? オーロラ活動の原因は？ A. A high sunspot level B. A low sunspot level C. The emission of charged particles from the sun 　　太陽からの帯電粒子の放射。 D. Meteor showers concentrated in the northern latitudes E3C03 (D) Where in the ionosphere does auroral activity occur? どの電離層でオーロラ活動が起きるか？ A. At F-region height B. In the equatorial band C. At D-region height D. At E-region height 　　Ｅ層の高度。 E3C04 (A) Which emission mode is best for auroral propagation? オーロラ電波伝播に最も適した送信方式は？ A. CW B. SSB C. FM D. RTTY E3C05 (B) What causes selective fading? 選択的減衰の原因は？ A. Small changes in beam heading at the receiving station B. Phase differences between radio-wave components of the same transmission, as experienced at the receiving station 　　受信側で発生する、同じ送信の無線電波コンポーネント間の位相差。 C. Large changes in the height of the ionosphere at the receiving station ordinarily occurring shortly after either sunrise or sunset D. Time differences between the receiving and transmitting stations E3C06 (A) How does the bandwidth of a transmitted signal affect selective fading? 送信信号の帯域幅は、選択的減衰をどう変えるか？ A. It is more pronounced at wide bandwidths 　　帯域幅が広い時よりひどくなる。 B. It is more pronounced at narrow bandwidths C. It is the same for both narrow and wide bandwidths D. The receiver bandwidth determines the selective fading effect E3C07 (A) How much farther does the VHF/UHF radio-path horizon distance exceed the geometric horizon? ＶＨＦ／ＵＨＦの無線パス水平線距離は、地理的水平線よりどれ位長いか？ A. By approximately 15% of the distance 　　１５％ぐらい。 B. By approximately twice the distance C. By approximately one-half the distance D. By approximately four times the distance E3C08 (B) For a 3-element beam antenna with horizontally mounted elements, how does the main lobe takeoff angle vary with height above flat ground? エレメントが水平に設置されている３エレメントビームアンテナで、 平地面からの高さで主ローブの打ち上げ角はどう変わるか？ A. It increases with increasing height B. It decreases with increasing height 　　高くなると小さくなる。 C. It does not vary with height D. It depends on E-region height, not antenna height E3C09 (B) What is the name of the high-angle wave in HF propagation that travels for some distance within the F2 region? Ｆ２層内をある程度の距離伝わる高アングルなＨＦ電波の伝播の名称は？ A. Oblique-angle ray B. Pedersen ray 　　ペダーソン放射。 C. Ordinary ray D. Heaviside ray E3C10 (C) What effect is usually responsible for propagating a VHF signal over 500 miles? ＶＨＦ信号が５００マイル以上伝播する原因は？ A. D-region absorption B. Faraday rotation C. Tropospheric ducting 　　対流層ダクティング。 D. Moonbounce E3C11 (B) For a 3-element beam antenna with horizontally mounted elements, how does the main lobe takeoff angle vary with the downward slope of the ground (moving away from the antenna)? エレメントが水平に設置されている３エレメントビームアンテナで、地面の下向きの傾き （アンテナから遠ざかる）で主ローブの打ち上げ角はどう変わるか？ A. It increases as the slope gets steeper B. It decreases as the slope gets steeper 　　傾きが急になるほど、小さくなる。 C. It does not depend on the ground slope D. It depends of the F-region height E3C12 (B) In the northern hemisphere, in which direction should a directional antenna be pointed to take maximum advantage of auroral propagation? 北半球で、オーロラ電波伝播を最大限利用するのに、指向性アンテナを向ける方角は？ A. South B. North 　　北向き。 C. East D. West E3C13 (B) As the frequency of a signal is increased, how does its ground wave propagation change? 信号の周波数が上がると、地表波の伝播はどう変わるか？ A. It increases B. It decreases 　　弱くなる。 C. It stays the same D. Radio waves don't propagate along the earth's surface E3C14 (A) What typical polarization does ground-wave propagation have? 地表は伝播の偏波は？ A. Vertical 　　垂直。 B. Horizontal C. Circular D. Elliptical E3C15 (D) Why does the radio-path horizon distance exceed the geometric horizon? 無線パス水平線距離が地理的水平線を上回るのは？ A. E-region skip B. D-region skip C. Auroral skip D. Radio waves may be bent 　　無線電波は曲げられるから。 SUBELEMENT E4 -- AMATEUR RADIO PRACTICES [5 Exam Questions -- 5 Groups] E4A Test equipment: spectrum analyzers (interpreting spectrum analyzer displays; transmitter output spectrum), logic probes (indications of high and low states in digital circuits; indications of pulse conditions in digital circuits) E4A01 (C) How does a spectrum analyzer differ from a conventional time-domain oscilloscope? スペクトラムアナライザーは、従来の時間ドメインオシロスコープとどう違うか？ A. A spectrum analyzer measures ionospheric reflection; an oscilloscope displays electrical signals B. A spectrum analyzer displays signals in the time domain; an oscilloscope displays signals in the frequency domain C. A spectrum analyzer displays signals in the frequency domain; an oscilloscope displays signals in the time domain 　　スペクトラムアナライザーは、周波数ドメインで信号を表示し、オシロスコープは 　　時間ドメインで表示する。 D. A spectrum analyzer displays radio frequencies; an oscilloscope displays audio frequencies E4A02 (D) What parameter does the horizontal axis of a spectrum analyzer display? スペクトラムアナライザーの水平軸が表示するパラメーターは？ A. Amplitude B. Voltage C. Resonance D. Frequency 　　周波数。 E4A03 (A) What parameter does the vertical axis of a spectrum analyzer display? スペクトラムアナライザーの垂直軸が表示するパラメーターは？ A. Amplitude 　　振幅。 B. Duration C. Frequency D. Time E4A04 (A) Which test instrument is used to display spurious signals from a radio transmitter? 無線送信機からのスプリアス信号を表示する為に使う機器は？ A. A spectrum analyzer 　　スペクトラムアナライザー B. A wattmeter C. A logic analyzer D. A time-domain reflectometer E4A05 (B) Which test instrument is used to display intermodulation distortion products in an SSB transmission? ＳＳＢ送信機のを表示する為に使う機器は？ A. A wattmeter B. A spectrum analyzer 　　スペクトラムアナライザー C. A logic analyzer D. A time-domain reflectometer E4A06 (C) Which of the following is NOT something that could be determined with a spectrum analyzer? スペクトラムアナライザーで測定出来るものでないものは？ A. The degree of isolation between the input and output ports of a 2 meter duplexer B. Whether a crystal is operating on its fundamental or overtone frequency C. The speed at which a transceiver switches from transmit to receive when being used for packet radio 　　パケット無線用に使われる時、トランシーバーが送信から受信へ切り替えるスピード。 D. The spectral output of a transmitter E4A07 (B) What is an advantage of using a spectrum analyzer to observe the output from a VHF transmitter? ＶＨＦ送信機の出力をスペクトラムアナライザーで見る事の利点は？ A. There are no advantages; an inexpensive oscilloscope can display the same information B. It displays all frequency components of the transmitted signal 　　送信信号の全周波数要素を表示する。 C. It displays a time-varying representation of the modulation envelope D. It costs much less than any other instrumentation useful for such measurements E4A08 (D) What advantage does a logic probe have over a voltmeter for monitoring the status of a logic circuit? 論理回路の状態を追跡するのにロジックプローブの方が電圧計よりも優れているのは？ A. It has many more leads to connect to the circuit than a voltmeter B. It can be used to test analog and digital circuits C. It can read logic circuit voltage more accurately than a voltmeter D. It is smaller and shows a simplified readout 　　小型で、単純な読取出力。 E4A09 (C) Which test instrument is used to directly indicate high and low digital voltage states? デジタル電圧状態の高低を直接表示する試験機器は？ A. An ohmmeter B. An electroscope C. A logic probe 　　ロジックプローブ。 D. A Wheatstone bridge E4A10 (D) What can a logic probe indicate about a digital logic circuit? ロジックプローブはデジタル論理回路の何を表示するか？ A. A short-circuit fault B. An open-circuit fault C. The resistance between logic modules D. The high and low logic states 　　論理状態の高低。 E4A11 (A) Which of the following test instruments can be used to indicate pulse conditions in a digital logic circuit? デジタル論理回路のパルス状態を表示する為に使われる試験機器は？ A. A logic probe 　　ロジックプローブ。 B. An ohmmeter C. An electroscope D. A Wheatstone bridge E4A12 (B) Which of the following procedures should you follow when connecting a spectrum analyzer to a transmitter output? スペクトラムアナライザーを送信器の出力に接続する時のやり方は？ A. Use high quality coaxial lines B. Attenuate the transmitter output going to the spectrum analyzer 　　スペクトラムアナライザーへ向かう送信機出力を減衰する。 C. Use a signal divider D. Match the antenna to the load E4B Frequency measurement devices (i.e., frequency counter, oscilloscope Lissajous figures, dip meter); meter performance limitations; oscilloscope performance limitations; frequency counter performance limitations E4B01 (B) What is a frequency standard? 周波数基準とは？ A. A frequency chosen by a net control operator for net operations B. A device used to produce a highly accurate reference frequency 　　非常に正確な参照周波数を発信する装置。 C. A device for accurately measuring frequency to within 1 Hz D. A device used to generate wide-band random frequencies E4B02 (B) What factors limit the accuracy, frequency response and stability of a frequency counter? 周波数カウンターの精度、周波数反応、安定性を制限するものは？ A. Phase comparator slew rate, speed of the logic and time base stability B. Time base accuracy, speed of the logic and time base stability 　　時間基準の精度、ロジック速度、時間基準の安定性。 C. Time base accuracy, temperature coefficient of the logic and time base reactance D. Number of digits in the readout, external frequency reference and temperature coefficient of the logic E4B03 (C) How can the accuracy of a frequency counter be improved? 周波数カウンターの精度を良くするには？ A. By using slower digital logic B. By improving the accuracy of the frequency response C. By increasing the accuracy of the time base 　　時間基準の精度を上げる。 D. By using faster digital logic E4B04 (C) If a frequency counter with a specified accuracy of +/- 1.0 ppm reads 146,520,000 Hz, what is the most the actual frequency being measured could differ from the reading? 定格精度＋／−１．０ｐｐｍの周波数カウンターで１４６、５２０、０００Ｈｚと読み取った。 実周波数と読取値の最大乖離は？ A. 165.2 Hz B. 14.652 kHz C. 146.52 Hz D. 1.4652 MHz E4B05 (A) If a frequency counter with a specified accuracy of +/- 0.1 ppm reads 146,520,000 Hz, what is the most the actual frequency being measured could differ from the reading? 定格精度＋／−０．１ｐｐｍの周波数カウンターで１４６、５２０、０００Ｈｚと読み取った。 実周波数と読取値の最大乖離は？ A. 14.652 Hz B. 0.1 MHz C. 1.4652 Hz D. 1.4652 kHz E4B06 (D) If a frequency counter with a specified accuracy of +/- 10 ppm reads 146,520,000 Hz, what is the most the actual frequency being measured could differ from the reading? 定格精度＋／−１０ｐｐｍの周波数カウンターで１４６、５２０、０００Ｈｚと読み取った。 実周波数と読取値の最大乖離は？ A. 146.52 Hz B. 10 Hz C. 146.52 kHz D. 1465.20 Hz E4B07 (D) If a frequency counter with a specified accuracy of +/- 1.0 ppm reads 432,100,000 Hz, what is the most the actual frequency being measured could differ from the reading? 定格精度＋／−１．０ｐｐｍの周波数カウンターで４３２、１００、０００Ｈｚと読み取った。 実周波数と読取値の最大乖離は？ A. 43.21 MHz B. 10 Hz C. 1.0 MHz D. 432.1 Hz E4B08 (A) If a frequency counter with a specified accuracy of +/- 0.1 ppm reads 432,100,000 Hz, what is the most the actual frequency being measured could differ from the reading? 定格精度＋／−０．１ｐｐｍの周波数カウンターで４３２、１００、０００Ｈｚと読み取った。 実周波数と読取値の最大乖離は？ A. 43.21 Hz B. 0.1 MHz C. 432.1 Hz D. 0.2 MHz E4B09 (C) If a frequency counter with a specified accuracy of +/- 10 ppm reads 432,100,000 Hz, what is the most the actual frequency being measured could differ from the reading? 定格精度＋／−１０ｐｐｍの周波数カウンターで４３２、１００、０００Ｈｚと読み取った。 実周波数と読取値の最大乖離は？ A. 10 MHz B. 10 Hz C. 4321 Hz D. 432.1 Hz E4B10 (C) If a 100 Hz signal is fed to the horizontal input of an oscilloscope and a 150 Hz signal is fed to the vertical input, what type of Lissajous figure will be displayed on the screen? オシロスコープの水平入力に１００Ｈｚの信号を入れて、垂直入力に１５０Ｈｚの信号を入れると、 どんなリサジュー形状が表示されるか。 A. A looping pattern with 100 loops horizontally and 150 loops vertically B. A rectangular pattern 100 mm wide and 150 mm high C. A looping pattern with 3 loops horizontally and 2 loops vertically 　　水平に３ループ、垂直に２ループのループ模様。 D. An oval pattern 100 mm wide and 150 mm high E4B11 (C) What is a dip-meter? ディップメーターとは？ A. A field-strength meter B. An SWR meter C. A device consisting of a variable frequency LC oscillator and an indicator showing the metered feedback current 　　可変周波数ＬＣ発振器と帰還電流測定値を示す表示器の付いた機器。 D. A marker generator E4B12 (D) What does a dip-meter do? ディップメーターの使い道は？ A. It accurately indicates signal strength B. It measures frequency accurately C. It measures transmitter output power accurately D. It gives an indication of the resonant frequency of a nearby circuit 　　近接する回路の共振周波数を指示する。 E4B13 (B) How does a dip-meter function? ディップメーターの動作原理は？ A. Reflected waves at a specific frequency desensitize a detector coil B. Power coupled from an oscillator causes a decrease in metered current 　　発信機と結合した電力が測定電流を減少させる。 C. Power from a transmitter cancels feedback current D. Harmonics from an oscillator cause an increase in resonant circuit Q E4B14 (D) What two ways could a dip-meter be used in an amateur station? アマチュア局でディップメーターが用いられる２つの使い方は？ A. To measure resonant frequency of antenna traps and to measure percentage of modulation B. To measure antenna resonance and to measure percentage of modulation C. To measure antenna resonance and to measure antenna impedance D. To measure resonant frequency of antenna traps and to measure a tuned circuit resonant frequency 　　アンテナトラップの共振周波数を測り、同調する回路共振周波数を測る。 E4B15 (A) For best accuracy, how tightly should a dip-meter be coupled with the LC circuit being checked? 精度を上げるには、ディップメーターは測定中のＬＣ回路にどのくらい密に結合させるか？ A. As loosely as possible 　　出来るだけ疎に。 B. As tightly as possible C. First loosely, then tightly D. With a jumper wire between the meter and the circuit to be checked E4B16 (A) What factors limit the accuracy, frequency response and stability of an oscilloscope? オシロスコープの精度、周波数反応、安定性を制限するものは？ A. Accuracy and linearity of the time base and the linearity and bandwidth of the deflection amplifiers 　　時間基準の精度と線形性、屈曲アンプの帯域幅。 B. Tube face voltage increments and deflection amplifier voltage C. Accuracy and linearity of the time base and tube face voltage increments D. Deflection amplifier output impedance and tube face frequency increments E4B17 (B) What happens in a dip-meter when it is too tightly coupled with a tuned circuit being checked? 測定中の同調した回路に密に結合されたディップメーターは？ A. Harmonics are generated B. A less accurate reading results 　　読取値の精度が下がる。 C. Cross modulation occurs D. Intermodulation distortion occurs E4B18 (B) What factors limit the accuracy, frequency response and stability of a D'Arsonval-type meter? ドアルソンバルメーターの精度、周波数反応、安定性を制限するものは？ A. Calibration, coil impedance and meter size B. Calibration, mechanical tolerance and coil impedance 　　校正、機械的誤差、コイルインピーダンス。 C. Coil impedance, electromagnetic voltage and movement mass D. Calibration, series resistance and electromagnet current E4B19 (D) How can the frequency response of an oscilloscope be improved? オシロスコープの周波数反応を良くするには？ A. By using a triggered sweep and a crystal oscillator as the time base B. By using a crystal oscillator as the time base and increasing the vertical sweep rate C. By increasing the vertical sweep rate and the horizontal amplifier frequency response D. By increasing the horizontal sweep rate and the vertical amplifier frequency response 　　水平走査率と垂直アンプ周波数反応を大きくする。 E4C Receiver performance characteristics (i.e., phase noise, desensitization, capture effect, intercept point, noise floor, dynamic range {blocking and IMD}, image rejection, MDS, signal-to-noise-ratio); intermodulation and cross- modulation interference E4C01 (D) What is the effect of excessive phase noise in the local oscillator section of a receiver? 受信機の局部発信部の過剰な位相ノイズの影響は？ A. It limits the receiver ability to receive strong signals B. It reduces the receiver sensitivity C. It decreases the receiver third-order intermodulation distortion dynamic range D. It allows strong signals on nearby frequencies to interfere with reception of weak signals 　　近接周波数上の強い信号が弱い信号の受信と混信を起こす。 E4C02 (A) What is the term for the reduction in receiver sensitivity caused by a strong signal near the received frequency? 受信周波数に近接する強い信号によって起こる受信機の感度の減少を何と言うか？ A. Desensitization 　　感度劣化。 B. Quieting C. Cross-modulation interference D. Squelch gain rollback E4C03 (B) Which of the following can cause receiver desensitization? 受信機の感度劣化を引き起こすのは？ A. Audio gain adjusted too low B. Strong adjacent-channel signals 　　隣接チャンネルの強い信号。 C. Audio bias adjusted too high D. Squelch gain adjusted too low E4C04 (A) Which of the following is one way receiver desensitization can be reduced? 受信機の感度劣化を緩和するのは？ A. Improve the shielding between the receiver and the transmitter causing the problem 　　受信機と問題を起こしている送信機間の遮蔽を良くする。 B. Increase the transmitter audio gain C. Decrease the receiver squelch level D. Increase the receiver bandwidth E4C05 (C) What is the FM capture effect? ＦＭのキャプチャー効果とは？ A. All signals on a frequency are demodulated by an FM receiver B. All signals on a frequency are demodulated by an AM receiver C. The strongest signal received is the only demodulated signal 　　最も強い信号のみ復調される事。 D. The weakest signal received is the only demodulated signal E4C06 (C) What is the term for the blocking of one FM phone signal by another, stronger FM phone signal? ＦＭ音声信号が他のより強いＦＭ音声信号にブロックされる事を？ A. Desensitization B. Cross-modulation interference C. Capture effect 　　キャプチャー効果という。 D. Frequency discrimination E4C07 (D) What is meant by the noise floor of a receiver? 受信機のノイズフロアとは？ A. The weakest signal that can be detected under noisy atmospheric conditions B. The amount of phase noise generated by the receiver local oscillator C. The minimum level of noise that will overload the receiver RF amplifier stage D. The weakest signal that can be detected above the receiver internal noise 　　受信機の内部雑音上で感知出来る最も弱い信号。 E4C08 (B) What is the blocking dynamic range for a receiver that has an 8-dB noise figure and an IF bandwidth of 500 Hz when the blocking level (1-dB compression point) is -20 dBm? 雑音数が８ｄＢでブロッキングレベルがー２０ｄＢｍの時中間周波数帯域幅が ５００Ｈｚの受信機のブロッキングダイナミックレンジは？ A. -119 dBm B. 119 dB C. 146 dB D. -146 dBm E4C09 (C) What is meant by the dynamic range of a communications receiver? 通信用受信機のダイナミックレンジとは？ A. The number of kHz between the lowest and the highest frequency to which the receiver can be tuned B. The maximum possible undistorted audio output of the receiver, referenced to one milliwatt C. The ratio between the minimum discernible signal and the largest tolerable signal without causing audible distortion products 　　判別可能な最も小さな信号と音声歪みを起こさない最も大きな信号の比。 D. The difference between the lowest-frequency signal and the highest-frequency signal detectable without moving the frequency control E4C10 (A) What type of problems are caused by poor dynamic range in a communications receiver? 通信用受信機で貧弱なダイナミックレンジによって生じる問題は？ A. Cross modulation of the desired signal and desensitization from strong adjacent signals 聞き取りたい信号の混変調と強力な隣接信号による感度劣化。 B. Oscillator instability requiring frequent retuning, and loss of ability to recover the opposite sideband, should it be transmitted C. Cross modulation of the desired signal and insufficient audio power to operate the speaker D. Oscillator instability and severe audio distortion of all but the strongest received signals E4C11 (B) If you measured the MDS of a receiver, what would you be measuring? 受信機のＭＤＳ測定とは？ A. The meter display sensitivity (MDS), or the responsiveness of the receiver S-meter to all signals B. The minimum discernible signal (MDS), or the weakest signal that the receiver can detect 　　判別可能な最も弱い信号（ＭＤＳ）、即ち、受信機が検知出来る最弱信号。 C. The minimum distorting signal (MDS), or the strongest signal the receiver can detect without overloading D. The maximum detectable spectrum (MDS), or the lowest to highest frequency range of the receiver E4C12 (B) How does intermodulation interference between two repeater transmitters usually occur? ２台のリピーター送信機によって相互変調混信がどのように起こるか？ A. When the signals from the transmitters are reflected out of phase from airplanes passing overhead B. When they are in close proximity and the signals mix in one or both of their final amplifiers 　　２台が近接しており、片方、若しくは、両方の最終アンプで信号が混じる事による。 C. When they are in close proximity and the signals cause feedback in one or both of their final amplifiers D. When the signals from the transmitters are reflected in phase from airplanes passing overhead E4C13 (B) How can intermodulation interference between two repeater transmitters in close proximity often be reduced or eliminated? 近接する２台のリピーター送信機の相互変調混信を抑制、若しくは、無くするには？ A. By using a Class C final amplifier with high driving power B. By installing a terminated circulator or ferrite isolator in the feed line to the transmitter and duplexer 　　送信機とデュプレクサーの給電線にターミネートされた循環器やフェライト分離機を組み込む。 C. By installing a band-pass filter in the antenna feed line D. By installing a low-pass filter in the antenna feed line E4C14 (A) If a receiver tuned to 146.70 MHz receives an intermodulation-product signal whenever a nearby transmitter transmits on 146.52 MHz, what are the two most likely frequencies for the other interfering signal? １４７．７０ＭＨｚに同調している受信機が、近接する送信機が１４６．５２ＭＨｚで 送信すると必ず相互変調出力信号を受信する。これ以外の混信信号となりうる２つの周波数は？ A. 146.34 MHz and 146.61 MHz B. 146.88 MHz and 146.34 MHz C. 146.10 MHz and 147.30 MHz D. 73.35 MHz and 239.40 MHz E4C15 (D) If the signals of two transmitters mix together in one or both of their final amplifiers and unwanted signals at the sum and difference frequencies of the original signals are generated, what is this called? ２台の送信機の信号が片方、若しくは、両方の最終アンプで混じり合い、 元の信号の和と差の周波数で不要な信号が発生する事を何と呼ぶか？ A. Amplifier desensitization B. Neutralization C. Adjacent channel interference D. Intermodulation interference 　　相互変調混信。 E4C16 (D) What is cross-modulation interference? 混変調混信とは？ A. Interference between two transmitters of different modulation type B. Interference caused by audio rectification in the receiver preamp C. Harmonic distortion of the transmitted signal D. Modulation from an unwanted signal is heard in addition to the desired signal 　　聞きたい信号に不要な信号がかぶさって聞こえる事。 E4C17 (C) What causes intermodulation in an electronic circuit? 電子回路で相互変調を起こすのは？ A. Too little gain B. Lack of neutralizaton C. Nonlinear circuits or devices 　　非線形回路や機器。 D. Positive feedback E4C18 (D) What two factors determine the sensitivity of a receiver? 受信機の感度を決める２つのファクターとは？ A. Dynamic range and third-order intercept B. Cost and availability C. Intermodulation distortion and dynamic range D. Bandwidth and noise figure 　　帯域幅と雑音値。 E4C19 (A) What is the limiting condition for sensitivity in a communications receiver? 通信用受信機の感度を制限する条件は？ A. The noise floor of the receiver 　　受信機のノイズフロア。 B. The power-supply output ripple C. The two-tone intermodulation distortion D. The input impedance to the detector E4C20 (C) Selectivity can be achieved in the front-end circuitry of a communications receiver by using what means? 通信用受信機のフロントエンド回路で何を使えば選択度が上がるか？ A. An audio filter B. An additional RF amplifier stage C. A preselector 　　プリセレクター。 D. An additional IF amplifier stage E4C21 (B) What degree of selectivity is desirable in the IF circuitry of an amateur RTTY receiver? アマチュアＲＴＴＹ受信機のＩＦ回路に望ましい選択度は？ A. 100 Hz B. 300 Hz C. 6000 Hz D. 2400 Hz E4C22 (B) What degree of selectivity is desirable in the IF circuitry of a single-sideband phone receiver? ＳＳＢ音声受信機のＩＦ回路に望ましい選択度は？ A. 1 kHz B. 2.4 kHz C. 4.2 kHz D. 4.8 kHz E4C23 (D) What is an undesirable effect of using too wide a filter bandwidth in the IF section of a receiver? 受信機のＩＦ部でフィルターの帯域幅が広すぎる時起きる望ましからぬ影響とは？ A. Output-offset overshoot B. Filter ringing C. Thermal-noise distortion D. Undesired signals will reach the audio stage 　　不必要な信号が音声部まで届く。 E4C24 (A) How should the filter bandwidth of a receiver IF section compare with the bandwidth of a received signal? 受信機ＩＦ部のフィルターの帯域幅と受信信号の帯域幅は？ A. It should be slightly greater than the received-signal bandwidth 　　受信機ＩＦ部のフィルターの帯域幅は受信信号の帯域幅より若干広め。 B. It should be approximately half the received-signal bandwidth C. It should be approximately twice the received-signal bandwidth D. It should be approximately four times the received-signal bandwidth E4C25 (D) What degree of selectivity is desirable in the IF section of an FM phone receiver? ＦＭ音声受信機のＩＦ回路に望ましい選択度は？ A. 1 kHz B. 2.4 kHz C. 4.2 kHz D. 15 kHz E4C26 (B) In a receiver, if the third-order intermodulation products have a power of-70 dBm when using two test tones at -30 dBm, what is the third-order intercept point? 受信機で、−３０ｄＢｍの２試験音を使った時３次相互変調出力がー７０ｄＢｍなら、３次交点は？ A. -20 dBm B. -10 dBm C. 0 dBm D +10 dBm E4C27 (D) In a receiver, if the second-order intermodulation products have a power of-70 dBm when using two test tones at -30 dBm, what is the second-order intercept point? 受信機で、−３０ｄＢｍの２試験音を使った時２次相互変調出力がー７０ｄＢｍなら、２次交点は？ A. -20 dBm B. -10 dBm C. 0 dBm D. +10 dBm E4D Noise suppression: vehicular system noise; electronic motor noise; static; line noise E4D01 (A) What is one of the most significant problems associated with reception in HF transceivers? ＨＦトランシーバーによる受信で最も重要な問題は？ A. Ignition noise 　　イグニッションノイズ。 B. Doppler shift C. Radar interference D. Mechanical vibrations E4D02 (A) What is the proper procedure for suppressing electrical noise in a mobile transceiver? モービルトランシーバーで電子ノイズを削減する正しいやり方は？ A. Follow the vehicle manufacturer's recommended procedures 　　自動車メーカーの薦めるやり方に従う。 B. Insulate all plane sheet metal surfaces from each other C. Apply antistatic spray liberally to all non-metallic surfaces D. Install filter capacitors in series with all DC wiring E4D03 (C) Where should ferrite beads be installed to suppress ignition noise in a mobile transceiver? モービルトランシーバーでイグニッションノイズを抑えるためにフェライトビーズは何処に組み込むか？ A. In the resistive high-voltage cable B. Between the starter solenoid and the starter motor C. In the primary and secondary ignition leads 　　１次、及び、２次イグニッション導線。 D. In the antenna lead to the transceiver E4D04 (B) How can alternator whine be minimized? オルタネーターのうなりを小さくするには？ A. By connecting the radio's power leads to the battery by the longest possible path B. By connecting the radio's power leads to the battery by the shortest possible path 　　無線の電源線を一番短い経路でバッテリーに繋ぐ。 C. By installing a high-pass filter in series with the radio's DC power lead to the vehicle's electrical system D. By installing filter capacitors in series with the DC power lead E4D05 (D) How can conducted and radiated noise caused by an automobile alternator be suppressed? 自動車のオルタネーターから伝わる、又、放射されるノイズを抑えるには？ A. By installing filter capacitors in series with the DC power lead and by installing a blocking capacitor in the field lead B. By connecting the radio to the battery by the longest possible path and installing a blocking capacitor in both leads C. By installing a high-pass filter in series with the radio's power lead and a low-pass filter in parallel with the field lead D. By connecting the radio's power leads directly to the battery and by installing coaxial capacitors in the alternator leads 　　　　無線の電源線を直接バッテリーに繋ぎ、同軸コンデンサーを 　　　　オルタネーター線に組み込む。　　 E4D06 (B) How can noise from an electric motor be suppressed? 電気モーターからのノイズを抑えるには？ A. Install a ferrite bead on the AC line used to power the motor B. Install a brute-force, AC-line filter in series with the motor leads 　　強力な、ＡＣラインフィルターをモーター電線に直列に組み込む。 C. Install a bypass capacitor in series with the motor leads D. Use a ground-fault current interrupter in the circuit used to power the motor E4D07 (B) What is a major cause of atmospheric static? 空電の主な原因は？ A. Sunspots B. Thunderstorms 　　嵐。 C. Airplanes D. Meteor showers E4D08 (C) How can it be determined if line-noise interference is being generated within your home? 電線ノイズ混信が自宅で起きているかどうかを調べるには？ A. By checking the power-line voltage with a time-domain reflectometer B. By observing the AC power line waveform with an oscilloscope C. By turning off the AC power line main circuit breaker and listening on a battery-operated radio 　　ＡＣ電源のメインブレーカーを落として、電池で動くラジオを聞く。 D. By observing the AC power line voltage with a spectrum analyzer E4D09 (A) What type of signal is picked up by electrical wiring near a radio transmitter? 無線送信機の近くの電線が拾う信号は？ A. A common-mode signal at the frequency of the radio transmitter 　　無線送信機の周波数の一般方式信号。 B. An electrical-sparking signal C. A differential-mode signal at the AC power line frequency D. Harmonics of the AC power line frequency E4D10 (B) Which of the following types of equipment would be least useful in locating power line noise? 電線ノイズが何処から来るか探すのに一番役に立たない器具は？ A. An AM receiver with a directional antenna B. An FM receiver with a directional antenna 　　指向性アンテナの付いたＦＭ受信機。 C. A hand-held RF sniffer D. An ultrasonic transducer, amplifier and parabolic reflector E4E Component mounting techniques (i.e., surface, dead bug (raised), circuit board; direction finding: techniques and equipment; fox hunting E4E01 (D) What circuit construction technique uses leadless components mounted between circuit board pads? 回路基盤パッドの間に実装された配線無し部品を使う作成手法は？ A. Raised mounting B. Integrated circuit mounting C. Hybrid device mounting D. Surface mounting 　　表面実装。 E4E02 (A) What is the main drawback of a wire-loop antenna for direction finding? ワイヤループアンテナを方角捜索に用いる主な欠点は？ A. It has a bidirectional pattern broadside to the loop 　　ループのブロードサイドに２方向性が在る。 B. It is non-rotatable C. It receives equally well in all directions D. It is practical for use only on VHF bands E4E03 (B) What pattern is desirable for a direction-finding antenna? 方角捜索アンテナに望ましいパターンは？ A. One which is non-cardioid B. One with good front-to-back and front-to-side ratio 　　ＦＢ比とＦＳ比の良い物。 C. One with good top-to-bottom and side-to-side ratio D. One with shallow nulls E4E04 (C) What is the triangulation method of direction finding? 方角探しで三角法とは？ A. The geometric angle of ground waves and sky waves from the signal source are used to locate the source B. A fixed receiving station plots three beam headings from the signal source on a map C. Beam antenna headings from several receiving stations are used to plot the signal source on a map 　　複数の受信局のビームアンテナの向きを使って信号源を地図上にプロットする。 D. A fixed receiving station uses three different antennas to plot the location of the signal source E4E05 (D) Why is an RF attenuator desirable in a receiver used for direction finding? 方角探索に使う受信機でＲＦ減衰器が望ましい訳は？ A. It narrows the bandwidth of the received signal B. It eliminates the effects of isotropic radiation C. It reduces loss of received signals caused by antenna pattern nulls D. It prevents receiver overload from extremely strong signals 　　極端に強力な信号のよる受信機の過負荷を防ぐ。 E4E06 (A) What is a sense antenna? 感度アンテナとは？ A. A vertical antenna added to a loop antenna to produce a cardioid reception pattern 　　カーディオイド受信パターンにする為にループアンテナに付加する垂直アンテナ。 B. A horizontal antenna added to a loop antenna to produce a cardioid reception pattern C. A vertical antenna added to an Adcock antenna to produce a omnidirectional reception pattern D. A horizontal antenna added to an Adcock antenna to produce a omnidirectional reception pattern E4E07 (C) What is a loop antenna? ループアンテナとは？ A. A large circularly-polarized antenna B. A small coil of wire tightly wound around a toroidal ferrite core C. Several turns of wire wound in the shape of a large open coil 　　大きなコイル状に何回か巻かれたワイヤ。 D. Any antenna coupled to a feed line through an inductive loop of wire E4E08 (D) How can the output voltage of a loop antenna be increased? ループアンテナの出力電圧を上げるには？ A. By reducing the permeability of the loop shield B. By increasing the number of wire turns in the loop and reducing the area of the loop structure C. By reducing either the number of wire turns in the loop or the area of the loop structure D. By increasing either the number of wire turns in the loop or the area of the loop structure 　　ループワイヤの巻き数かループの面積を増やす。 E4E09 (B) Why is an antenna with a cardioid pattern desirable for a direction-finding system? カーディオイドパターンのアンテナが方角探査システムに望ましい訳は？ A. The broad-side responses of the cardioid pattern can be aimed at the desired station B. The deep null of the cardioid pattern can pinpoint the direction of the desired station 　　カーディオイドパターンの深いゼロ点が聞きたい局の方角に照準を合わせる。 C. The sharp peak response of the cardioid pattern can pinpoint the direction of the desired station D. The high-radiation angle of the cardioid pattern is useful for short- distance direction finding E4E10 (C) What type of terrain can cause errors in direction finding? 方角探査でエラーを起こしやすい地形は？ A. Homogeneous terrain B. Smooth grassy terrain C. Varied terrain 　　変化の多い地形。 D. Terrain with no buildings or mountains E4E11 (A) What is the amateur station activity known as fox hunting? 狐狩りとして知られるアマチュア局の活動とは？ A. Attempting to locate a hidden transmitter by using receivers and direction- finding techniques 　　受信機と方角探査の技量を使って隠された送信機を発見する事。 B. Attempting to locate a hidden receiver by using receivers and direction- finding techniques C. Assisting government agents with tracking transmitter collars worn by foxes D. Assembling stations using generators and portable antennas to test emergency communications skills SUBELEMENT E5 -- ELECTRICAL PRINCIPLES [9 Exam Questions -- 9 Groups] E5A Characteristics of resonant circuits: Series resonance (capacitor and inductor to resonate at a specific frequency); Parallel resonance (capacitor and inductor to resonate at a specific frequency); half-power bandwidth E5A01 (A) What can cause the voltage across reactances in series to be larger than the voltage applied to them? 直列のリアクタンスの両端電圧が供給電圧よりも大きくなるのは？ A. Resonance 　　共振。 B. Capacitance C. Conductance D. Resistance E5A02 (C) What is resonance in an electrical circuit? 電子回路の共振とは？ A. The highest frequency that will pass current B. The lowest frequency that will pass current C. The frequency at which capacitive reactance equals inductive reactance 　　容量リアクタンスと誘導リアクタンスが等しくなる周波数。 D. The frequency at which power factor is at a minimum E5A03 (B) What are the conditions for resonance to occur in an electrical circuit? 電子回路で共振が起こる条件とは？ A. The power factor is at a minimum B. Inductive and capacitive reactances are equal 　　誘導と容量リアクタンスが等しい。 C. The square root of the sum of the capacitive and inductive reactance is equal to the resonant frequency D. The square root of the product of the capacitive and inductive reactance is equal to the resonant frequency E5A04 (D) When the inductive reactance of an electrical circuit equals its capacitive reactance, what is this condition called? 電子回路の誘導リアクタンスが容量リアクタンスに等しくなると何と呼ばれるか？ A. Reactive quiescence B. High Q C. Reactive equilibrium D. Resonance 　　共振。 E5A05 (D) What is the magnitude of the impedance of a series R-L-C circuit at resonance? 共振時の直列ＲＬＣ回路のインピーダンスの大きさは？ A. High, as compared to the circuit resistance B. Approximately equal to capacitive reactance C. Approximately equal to inductive reactance D. Approximately equal to circuit resistance 　　回路抵抗とほぼ同じ。 E5A06 (A) What is the magnitude of the impedance of a circuit with a resistor, an inductor and a capacitor all in parallel, at resonance? 共振時、並列の抵抗、コイル、コンデンサーから成る回路のインピーダンスの大きさは？ A. Approximately equal to circuit resistance 　　回路抵抗とほぼ同じ。　　 B. Approximately equal to inductive reactance C. Low, as compared to the circuit resistance D. Approximately equal to capacitive reactance E5A07 (B) What is the magnitude of the current at the input of a series R-L-C circuit at resonance? 共振時、直列ＲＬＣ回路の入力電流の大きさは？ A. It is at a minimum B. It is at a maximum 　　最大。 C. It is DC D. It is zero E5A08 (B) What is the magnitude of the circulating current within the components of a parallel L-C circuit at resonance? 共振時、並列ＬＣ回路の部品内の循環電流の大きさは？ A. It is at a minimum B. It is at a maximum 　　最大。 C. It is DC D. It is zero E5A09 (A) What is the magnitude of the current at the input of a parallel R-L-C circuit at resonance? 共振時、並列ＲＬＣ回路の入力電流の大きさは？ A. It is at a minimum 　　最小。 B. It is at a maximum C. It is DC D. It is zero E5A10 (C) What is the relationship between the current through a resonant circuit and the voltage across the circuit? 共振回路を流れる電流と両端の電圧の関係は？ A. The voltage leads the current by 90 degrees B. The current leads the voltage by 90 degrees C. The voltage and current are in phase 　　電圧と電流の位相が合っている。 D. The voltage and current are 180 degrees out of phase E5A11 (C) What is the relationship between the current into (or out of) a parallel resonant circuit and the voltage across the circuit? 並列共振回路への入力電流と両端の電圧との関係は？ A. The voltage leads the current by 90 degrees B. The current leads the voltage by 90 degrees C. The voltage and current are in phase 　　電圧と電流の位相が合っている D. The voltage and current are 180 degrees out of phase E5A12 (A) What is the half-power bandwidth of a parallel resonant circuit that has a resonant frequency of 1.8 MHz and a Q of 95? 共振周波数が１．８ＭＨｚでＱが９５の並列共振回路の１／２出力帯域幅は？ A. 18.9 kHz B. 1.89 kHz C. 189 Hz D. 58.7 kHz E5A13 (C) What is the half-power bandwidth of a parallel resonant circuit that has a resonant frequency of 7.1 MHz and a Q of 150? 共振周波数が７．１ＭＨｚでＱが１５０の並列共振回路の１／２出力帯域幅は？ A. 211 kHz B. 16.5 kHz C. 47.3 kHz D. 21.1 kHz E5A14 (A) What is the half-power bandwidth of a parallel resonant circuit that has a resonant frequency of 14.25 MHz and a Q of 150? 共振周波数が１４．２５ＭＨｚでＱが１５０の並列共振回路の１／２出力帯域幅は？ A. 95 kHz B. 10.5 kHz C. 10.5 MHz D. 17 kHz E5A15 (D) What is the half-power bandwidth of a parallel resonant circuit that has a resonant frequency of 21.15 MHz and a Q of 95? 共振周波数が２１．１５ＭＨｚでＱが９５の並列共振回路の１／２出力帯域幅は？ A. 4.49 kHz B. 44.9 kHz C. 22.3 kHz D. 222.6 kHz E5A16 (C) What is the half-power bandwidth of a parallel resonant circuit that has a resonant frequency of 3.7 MHz and a Q of 118? 共振周波数が３．７ＭＨｚでＱが１１８の並列共振回路の１／２出力帯域幅は？ A. 22.3 kHz B. 76.2 kHz C. 31.4 kHz D. 10.8 kHz E5A17 (C) What is the half-power bandwidth of a parallel resonant circuit that has a resonant frequency of 14.25 MHz and a Q of 187? 共振周波数が１４．２５ＭＨｚでＱが１８７の並列共振回路の１／２出力帯域幅は？ A. 22.3 kHz B. 10.8 kHz C. 76.2 kHz D. 13.1 kHz E5A18 (C) What is the resonant frequency of a series RLC circuit if R is 47 ohms, L is 50 microhenrys and C is 40 picofarads? 抵抗が４７Ω、コイルが５０μＨ、コンデンサーが４０ｐＦの直列ＲＬＣ回路の共振周波数は？ A. 79.6 MHz B. 1.78 MHz C. 3.56 MHz D. 7.96 MHz E5A19 (B) What is the resonant frequency of a series RLC circuit if R is 47 ohms, L is 40 microhenrys and C is 200 picofarads? 抵抗が４７Ω、コイルが４０μＨ、コンデンサーが２００ｐＦの直列ＲＬＣ回路の共振周波数は？ A. 1.99 kHz B. 1.78 MHz C. 1.99 MHz D. 1.78 kHz E5A20 (D) What is the resonant frequency of a series RLC circuit if R is 47 ohms, L is 50 microhenrys and C is 10 picofarads? 抵抗が４７Ω、コイルが５０μＨ、コンデンサーが１０ｐＦの直列ＲＬＣ回路の共振周波数は？ A. 3.18 MHz B. 3.18 kHz C. 7.12 kHz D. 7.12 MHz E5A21 (A) What is the resonant frequency of a series RLC circuit if R is 47 ohms, L is 25 microhenrys and C is 10 picofarads? 抵抗が４７Ω、コイルが２５μＨ、コンデンサーが１０ｐＦの直列ＲＬＣ回路の共振周波数は？ A. 10.1 MHz B. 63.7 MHz C. 10.1 kHz D. 63.7 kHz E5A22 (B) What is the resonant frequency of a series RLC circuit if R is 47 ohms, L is 3 microhenrys and C is 40 picofarads? 抵抗が４７Ω、コイルが３μＨ、コンデンサーが４０ｐＦの直列ＲＬＣ回路の共振周波数は？ A. 13.1 MHz B. 14.5 MHz C. 14.5 kHz D. 13.1 kHz E5A23 (D) What is the resonant frequency of a series RLC circuit if R is 47 ohms, L is 4 microhenrys and C is 20 picofarads? 抵抗が４７Ω、コイルが４μＨ、コンデンサーが２０ｐＦの直列ＲＬＣ回路の共振周波数は？ A. 19.9 kHz B. 17.8 kHz C. 19.9 MHz D. 17.8 MHz E5A24 (C) What is the resonant frequency of a series RLC circuit if R is 47 ohms, L is 8 microhenrys and C is 7 picofarads? 抵抗が４７Ω、コイルが８μＨ、コンデンサーが７ｐＦの直列ＲＬＣ回路の共振周波数は？ A. 2.84 MHz B. 28.4 MHz C. 21.3 MHz D. 2.13 MHz E5A25 (A) What is the resonant frequency of a series RLC circuit if R is 47 ohms, L is 3 microhenrys and C is 15 picofarads? 抵抗が４７Ω、コイルが３μＨ、コンデンサーが１５ｐＦの直列ＲＬＣ回路の共振周波数は？ A. 23.7 MHz B. 23.7 kHz C. 35.4 kHz D. 35.4 MHz E5B Exponential charge/discharge curves (time constants): definition; time constants in RL and RC circuits E5B01(B) What is the term for the time required for the capacitor in an RC circuit to be charged to 63.2% of the supply voltage? ＲＣ回路のコンデンサーが供給電圧の６３．２％まで充電されるのに要する時間を何と言うか？ A. An exponential rate of one B. One time constant 　　１時定数。 C. One exponential period D. A time factor of one E5B02(A) What is the term for the time required for the current in an RL circuit to build up to 63.2% of the maximum value? ＲＣ回路の電流が最大値のの６３．２％に達するまでに要する時間を何と言うか？ A. One time constant 　　１時定数。 B. An exponential period of one C. A time factor of one D. One exponential rate E5B03 (D) What is the term for the time it takes for a charged capacitor in an RC circuit to discharge to 36.8% of its initial value of stored charge? ＲＣ回路の充電されたコンデンサーが初期充電電圧の３６．８％まで放電するのに 要する時間を何と言うか？ A. One discharge period B. An exponential discharge rate of one C. A discharge factor of one D. One time constant 　　１時定数。 E5B04 (C) The capacitor in an RC circuit is charged to what percentage of the supply voltage after two time constants? ２時定数後、ＲＣ回路のコンデンサーは、供給電圧の何％まで充電されるか？ A. 36.8% B. 63.2% C. 86.5% D. 95% E5B05 (D) The capacitor in an RC circuit is discharged to what percentage of the starting voltage after two time constants? ２時定数後、ＲＣ回路のコンデンサーは、初期電圧の何％まで放電するか？ A. 86.5% B. 63.2% C. 36.8% D. 13.5% E5B06 (A) What is the time constant of a circuit having two 100-microfarad capacitors and two 470-kilohm resistors all in series? １００μＦのコンデンサー２個と４７０ｋΩの抵抗２個が全て並列の回路の時定数は？ A. 47 seconds B. 101.1 seconds C. 103 seconds D. 220 seconds E5B07 (D) What is the time constant of a circuit having two 220-microfarad capacitors and two 1-megohm resistors all in parallel? ２２０μＦのコンデンサー２個と１ＭΩの抵抗２個が全て並列の回路の時定数は？ A. 47 seconds B. 101.1 seconds C. 103 seconds D. 220 seconds E5B08 (C) What is the time constant of a circuit having a 220-microfarad capacitor in series with a 470-kilohm resistor? ２２０μＦのコンデンサーと４７０ｋΩの抵抗が全て並列の回路の時定数は？ A. 47 seconds B. 80 seconds C. 103 seconds D. 220 seconds E5B09 (A) How long does it take for an initial charge of 20 V DC to decrease to 7.36 V DC in a 0.01-microfarad capacitor when a 2-megohm resistor is connected across it? ２ＭΩの抵抗が並列接続された０．０１μＦのコンデンサーの初期充電電圧２０ＶＤＣが ７．３６ＶＤＣまで下がるのに要する時間は？ A. 0.02 seconds B. 0.08 seconds C. 450 seconds D. 1350 seconds E5B10 (B) How long does it take for an initial charge of 20 V DC to decrease to 0.37 V DC in a 0.01-microfarad capacitor when a 2-megohm resistor is connected across it? ２ＭΩの抵抗が並列接続された０．０１μＦのコンデンサーの初期充電電圧２０ＶＤＣが ０．３７ＶＤＣまで下がるのに要する時間は？ A. 0.02 seconds B. 0.08 seconds C. 450 seconds D. 1350 seconds E5B11 (C) How long does it take for an initial charge of 800 V DC to decrease to 294 V DC in a 450-microfarad capacitor when a 1-megohm resistor is connected across it? １ＭΩの抵抗が並列接続された４５０μＦのコンデンサーの初期充電電圧８００ＶＤＣが ２９４ＶＤＣまで下がるのに要する時間は？ A. 0.02 seconds B. 0.08 seconds C. 450 seconds D. 1350 seconds E5C Impedance diagrams: Basic principles of Smith charts; impedance of RLC networks at specified frequencies; PC based impedance analysis (including Smith Charts) E5C01 (A) What type of graph can be used to calculate impedance along transmission lines? 給電線のインピーダンスを計算する為に使われるグラフは？ A. A Smith chart 　　スミスチャート。 B. A logarithmic chart C. A Jones chart D. A radiation pattern chart E5C02 (B) What type of coordinate system is used in a Smith chart? スミスチャートで使われる座標系は？ A. Voltage circles and current arcs B. Resistance circles and reactance arcs 　　抵抗円とリアクタンス円弧。 C. Voltage lines and current chords D. Resistance lines and reactance chords E5C03 (C) What type of calculations can be performed using a Smith chart? スミスチャートを使ってどのような計算が出来るか？ A. Beam headings and radiation patterns B. Satellite azimuth and elevation bearings C. Impedance and SWR values in transmission lines 　　給電線のインピーダンスとＳＷＲ。 D. Circuit gain calculations E5C04 (C) What are the two families of circles that make up a Smith chart? スミスチャートを作る２つの円群は？ A. Resistance and voltage B. Reactance and voltage C. Resistance and reactance 　　抵抗とリアクタンス。 D. Voltage and impedance E5C05 (A) What type of chart is shown in Figure E5-1? 図Ｅ５−１に示すチャートは？ A. Smith chart 　　スミスチャート。 B. Free-space radiation directivity chart C. Vertical-space radiation pattern chart D. Horizontal-space radiation pattern chart E5C06 (B) On the Smith chart shown in Figure E5-1, what is the name for the large outer circle bounding the coordinate portion of the chart? 図Ｅ５−１に示すスミスチャートで、チャートの座標の境界となる大きな外周円の名前は？ A. Prime axis B. Reactance axis 　　リアクタンス軸。 C. Impedance axis D. Polar axis E5C07 (D) On the Smith chart shown in Figure E5-1, what is the only straight line shown? 図Ｅ５−１に示すスミスチャートで、１本だけ真っ直ぐな線は？ A. The reactance axis B. The current axis C. The voltage axis D. The resistance axis 　　抵抗軸。 E5C08 (C) What is the process of normalizing with regard to a Smith chart? スミスチャートで正規化とは？ A. Reassigning resistance values with regard to the reactance axis B. Reassigning reactance values with regard to the resistance axis C. Reassigning impedance values with regard to the prime center 　　インピーダンス値をプライムセンターとの比較で再設定する事。 D. Reassigning prime center with regard to the reactance axis E5C09 (A) What is the third family of circles, which are added to a Smith chart during the process of solving problems? 問題を解く途中で、スミスチャートに加えられる３番目の円群は？ A. Standing-wave ratio circles 　　ＳＷＲ円。 B. Antenna-length circles C. Coaxial-length circles D. Radiation-pattern circles E5C10 (A) In rectangular coordinates, what is the impedance of a network comprised of a 10-microhenry inductor in series with a 40-ohm resistor at 500 MHz? 正方座標系で、５００ＭＨｚで１０μＨのコイルと４０Ωの抵抗から成る直列回路の インピーダンスは？ A. 40 + j31,400 B. 40 - j31,400 C. 31,400 + j40 D. 31,400 - j40 E5C11 (C) In polar coordinates, what is the impedance of a network comprised of a 100- picofarad capacitor in parallel with a 4,000-ohm resistor at 500 kHz? 極座標系で、５００ＫＨｚで１００ｐＦのコンデンサーと４、０００Ωの抵抗から成る 並列回路のインピーダンスは？ A. 2490 ohms, /__51.5_degrees__ B. 4000 ohms, /__38.5_degrees__ C. 2490 ohms, /__-51.5_degrees__ D. 5112 ohms, /__-38.5_degrees__ E5C12 (D) Which point on Figure E5-2 best represents the impedance of a series circuit consisting of a 300-ohm resistor, a 0.64-microhenry inductor and a 85-picofarad capacitor at 24.900 MHz? 図Ｅ５−２で、２４．９００ＭＨｚで３００Ωの抵抗と０．６４μＨのコイルと ８５ｐＦのコンデンサーから成る直列回路のインピーダンスを最も良く表す点は？ A. Point 1 B. Point 3 C. Point 5 D. Point 8 E5C13 (D) What are the curved lines on a Smith chart? スミスチャートの曲線は？ A. Portions of current circles B. Portions of voltage circles C. Portions of resistance circles D. Portions of reactance circles 　　リアクタンス円の一部。 E5C14 (B) How are the wavelength scales on a Smith chart calibrated? スミスチャートの波長スケールはどのように設定されるか？ A. In portions of transmission line electrical frequency B. In portions of transmission line electrical wavelength 　　送電線の電気的波長に応じて。 C. In portions of antenna electrical wavelength D. In portions of antenna electrical frequency E5D Phase angle between voltage and current; impedances and phase angles of series and parallel circuits; E5D01 (A) What is the phase angle between the voltage across and the current through a series R-L-C circuit if XC is 25 ohms, R is 100 ohms, and XL is 100 ohms? ＸＣが２５Ω、Ｒが１００Ω、ＸＬが１００Ωである直列ＲＬＣ回路を流れる電流と 両端の電圧の位相角は？ A. 36.9 degrees with the voltage leading the current 　　電圧が電流より３６．９°先に進む。 B. 53.1 degrees with the voltage lagging the current C. 36.9 degrees with the voltage lagging the current D. 53.1 degrees with the voltage leading the current E5D02 (C) What is the phase angle between the voltage across and the current through a series R-L-C circuit if XC is 500 ohms, R is 1 kilohm, and XL is 250 ohms? ＸＣが５００Ω、Ｒが１ＫΩ、ＸＬが２５０Ωである直列ＲＬＣ回路を流れる電流と 両端の電圧の位相角は？ A. 68.2 degrees with the voltage leading the current B. 14.0 degrees with the voltage leading the current C. 14.0 degrees with the voltage lagging the current 　　電圧が電流より１４．０°後に遅れる。 D. 68.2 degrees with the voltage lagging the current E5D03 (D) What is the phase angle between the voltage across and the current through a series R-L-C circuit if XC is 50 ohms, R is 100 ohms, and XL is 25 ohms? ＸＣが５０Ω、Ｒが１００Ω、ＸＬが２５Ωである直列ＲＬＣ回路を流れる電流と 両端の電圧の位相角は？ A. 76 degrees with the voltage lagging the current B. 14 degrees with the voltage leading the current C. 76 degrees with the voltage leading the current D. 14 degrees with the voltage lagging the current 　　電圧が電流より１４°後に遅れる。 E5D04 (A) What is the phase angle between the voltage across and the current through a series R-L-C circuit if XC is 100 ohms, R is 100 ohms, and XL is 75 ohms? ＸＣが１００Ω、Ｒが１００Ω、ＸＬが７５Ωである直列ＲＬＣ回路を流れる電流と 両端の電圧の位相角は？ A. 14 degrees with the voltage lagging the current 　　電圧が電流より１４°後に遅れる。 B. 14 degrees with the voltage leading the current C. 76 degrees with the voltage leading the current D. 76 degrees with the voltage lagging the current E5D05 (D) What is the phase angle between the voltage across and the current through a series R-L-C circuit if XC is 50 ohms, R is 100 ohms, and XL is 75 ohms? ＸＣが５０Ω、Ｒが１００Ω、ＸＬが７５Ωである直列ＲＬＣ回路を流れる電流と 両端の電圧の位相角は？ A. 76 degrees with the voltage leading the current B. 76 degrees with the voltage lagging the current C. 14 degrees with the voltage lagging the current D. 14 degrees with the voltage leading the current 　　電圧が電流より１４°先に進む。 E5D06 (D) What is the relationship between the current through and the voltage across a capacitor? コンデンサーを流れる電流と両端の電圧の関係は？ A. Voltage and current are in phase B. Voltage and current are 180 degrees out of phase C. Voltage leads current by 90 degrees D. Current leads voltage by 90 degrees 　　電流が電圧より９０°先に進む。 E5D07 (A) What is the relationship between the current through an inductor and the voltage across an inductor? コイルを流れる電流と両端の電圧の関係は？ A. Voltage leads current by 90 degrees 　　電圧が電流より９０°先に進む。 B. Current leads voltage by 90 degrees C. Voltage and current are 180 degrees out of phase D. Voltage and current are in phase E5D08 (B) What is the phase angle between the voltage across and the current through a series RLC circuit if XC is 25 ohms, R is 100 ohms, and XL is 50 ohms? ＸＣが２５Ω、Ｒが１００Ω、ＸＬが５０Ωである直列ＲＬＣ回路を流れる電流と 両端の電圧の位相角は？ A. 14 degrees with the voltage lagging the current B. 14 degrees with the voltage leading the current 　　電圧が電流より１４°先に進む。 C. 76 degrees with the voltage lagging the current D. 76 degrees with the voltage leading the current E5D09 (B) What is the phase angle between the voltage across and the current through a series RLC circuit if XC is 75 ohms, R is 100 ohms, and XL is 100 ohms? ＸＣが７５Ω、Ｒが１００Ω、ＸＬが１００Ωである直列ＲＬＣ回路を流れる電流と 両端の電圧の位相角は？ A. 76 degrees with the voltage leading the current B. 14 degrees with the voltage leading the current 　　電圧が電流より１４°先に進む。 C. 14 degrees with the voltage lagging the current D. 76 degrees with the voltage lagging the current E5D10 (C) What is the phase angle between the voltage across and the current through a series RLC circuit if XC is 75 ohms, R is 100 ohms, and XL is 50 ohms? ＸＣが７５Ω、Ｒが１００Ω、ＸＬが５０Ωである直列ＲＬＣ回路を流れる電流と 両端の電圧の位相角は？ A. 76 degrees with the voltage lagging the current B. 14 degrees with the voltage leading the current C. 14 degrees with the voltage lagging the current 　　電圧が電流より１４°後に遅れる。 D. 76 degrees with the voltage leading the current E5D11 (D) What is the phase angle between the voltage across and the current through a series RLC circuit if XC is 250 ohms, R is 1 kilohm, and XL is 500 ohms? ＸＣが２５０Ω、Ｒが１ＫΩ、ＸＬが５００Ωである直列ＲＬＣ回路を流れる電流と 両端の電圧の位相角は？ A. 81.47 degrees with the voltage lagging the current B. 81.47 degrees with the voltage leading the current C. 14.04 degrees with the voltage lagging the current D. 14.04 degrees with the voltage leading the current 電圧が電流より１４．０４度先に進む。 E5E Algebraic operations using complex numbers: rectangular coordinates (real and imaginary parts); polar coordinates (magnitude and angle) E5E01 (B) In polar coordinates, what is the impedance of a network comprised of a 100-ohm- reactance inductor in series with a 100-ohm resistor? 極座標系で、リアクタンスが１００Ωのコイルと１００Ωの抵抗から成る直列回路の インピーダンスは？ A. 121 ohms, /__35_degrees__ B. 141 ohms, /__45_degrees__ C. 161 ohms, /__55_degrees__ D. 181 ohms, /__65_degrees__ E5E02 (D) In polar coordinates, what is the impedance of a network comprised of a 100-ohm- reactance inductor, a 100-ohm-reactance capacitor, and a 100-ohm resistor all connected in series? 極座標系で、リアクタンスが１００Ωのコイルとリアクタンスが１００Ωのコンデンサーと １００Ωの抵抗から成る直列回路のインピーダンスは？ A. 100 ohms, /__90_degrees__ B. 10 ohms, /__0_degrees__ C. 10 ohms, /__100_degrees__ D. 100 ohms, /__0_degrees__ E5E03 (A) In polar coordinates, what is the impedance of a network comprised of a 300-ohm- reactance capacitor, a 600-ohm-reactance inductor, and a 400-ohm resistor, all connected in series? 極座標系で、リアクタンスが３００Ωのコンデンサーとリアクタンスが６００Ωのコイルと ４００Ωの抵抗から成る直列回路のインピーダンスは？ A. 500 ohms, /__37_degrees__ B. 400 ohms, /__27_degrees__ C. 300 ohms, /__17_degrees__ D. 200 ohms, /__10_degrees__ E5E04 (D) In polar coordinates, what is the impedance of a network comprised of a 400-ohm- reactance capacitor in series with a 300-ohm resistor? 極座標系で、リアクタンスが４００Ωのコンデンサーと３００Ωの抵抗から成る直列回路の インピーダンスは？ A. 240 ohms, /__36.9_degrees__ B. 240 ohms, /__-36.9_degrees__ C. 500 ohms, /__53.1_degrees__ D. 500 ohms, /__-53.1_degrees__ E5E05 (A) In polar coordinates, what is the impedance of a network comprised of a 400-ohm- reactance inductor in parallel with a 300-ohm resistor? 極座標系で、リアクタンスが４００Ωのコイルと３００Ωの抵抗から成る並列回路の インピーダンスは？ A. 240 ohms, /__36.9_degrees__ B. 240 ohms, /__-36.9_degrees__ C. 500 ohms, /__53.1_degrees__ D. 500 ohms, /__-53.1_degrees__ E5E06 (D) In polar coordinates, what is the impedance of a network comprised of a 100-ohm- reactance capacitor in series with a 100-ohm resistor? 極座標系で、リアクタンスが１００Ωのコンデンサーと１００Ωの抵抗から成る直列回路の インピーダンスは？ A. 121 ohms, /__-25_degrees__ B. 191 ohms, /__-85_degrees__ C. 161 ohms, /__-65_degrees__ D. 141 ohms, /__-45_degrees__ E5E07 (C) In polar coordinates, what is the impedance of a network comprised of a 100-ohm- reactance capacitor in parallel with a 100-ohm resistor? 極座標系で、リアクタンスが１００Ωのコンデンサーと１００Ωの抵抗から成る並列回路の インピーダンスは？ A. 31 ohms, /__-15_degrees__ B. 51 ohms, /__-25_degrees__ C. 71 ohms, /__-45_degrees__ D. 91 ohms, /__-65_degrees__ E5E08 (B) In polar coordinates, what is the impedance of a network comprised of a 300-ohm- reactance inductor in series with a 400-ohm resistor? 極座標系で、リアクタンスが３００Ωのコイルと４００Ωの抵抗から成る直列回路の インピーダンスは？ A. 400 ohms, /__27_degrees__ B. 500 ohms, /__37_degrees__ C. 500 ohms, /__47_degrees__ D. 700 ohms, /__57_degrees__ E5E09 (A) When using rectangular coordinates to graph the impedance of a circuit, what does the horizontal axis represent? 正方座標系で回路のインピーダンスをグラフ化する時、水平軸の表すものは？ A. The voltage or current associated with the resistive component 　　抵抗要素に関わる電圧や電流。 B. The voltage or current associated with the reactive component C. The sum of the reactive and resistive components D. The difference between the resistive and reactive components E5E10 (B) When using rectangular coordinates to graph the impedance of a circuit, what does the vertical axis represent? 正方座標系で回路のインピーダンスをグラフ化する時、垂直軸の表すものは？ A. The voltage or current associated with the resistive component B. The voltage or current associated with the reactive component 　　リアクタンス要素に関わる電圧や電流。 C. The sum of the reactive and resistive components D. The difference between the resistive and reactive components E5E11 (C) What do the two numbers represent that are used to define a point on a graph using rectangular coordinates? 正方座標系のグラフ上の点を表す２つの値が表すものは？ A. The horizontal and inverted axes B. The vertical and inverted axes C. The coordinate values along the horizontal and vertical axes 　　水平軸と垂直軸に沿った座標値。 D. The phase angle with respect to its prime center E5E12 (D) If you plot the impedance of a circuit using the rectangular coordinate system and find the impedance point falls on the right side of the graph on the horizontal line, what do you know about the circuit? 正方座標系を使って回路のインピーダンスをプロットして、インピーダンス点が グラフの右側の水平線上に来たら、回路の何が分かるか？ A. It has to be a direct current circuit B. It contains resistance and capacitive reactance C. It contains resistance and inductive reactance D. It is equivalent to a pure resistance 　　回路は純抵抗と等価。 E5E13 (B) Why would you plot the impedance of a circuit using the polar coordinate system? 回路のインピーダンスを極座標系でプロットするのは？ A. To display the data on an XY chart B. To give a visual representation of the phase angle 　　位相角を視覚的に表す為。 C. To graphically represent the DC component D. To show the reactance which is present E5E14 (D) What coordinate system can be used to display the resistive, inductive, and/or capacitive reactance components of an impedance? インピーダンスの抵抗、誘導、容量リアクタンス要素を表示出来る座標系は？ A. Maidenhead grid B. National Bureau of Standards C. Faraday D. Rectangular 　　正方。 E5E15 (D) What coordinate system can be used to display the phase angle of a circuit containing resistance, inductive and/or capacitive reactance? 抵抗、誘導、容量リアクタンスを含む回路の位相角を表示出来る座標系は？ A. Maidenhead grid B. National Bureau of Standards C. Faraday D. Polar 　　極。 E5E16 (A) In polar coordinates, what is the impedance of a circuit of 100 -j100 ohms impedance? インピーダンスが１００−ｊ１００Ωである回路の極座標でのインピーダンスは？ A. 141 ohms, /__-45_degrees__ B. 100 ohms, /__45_degrees__ C. 100 ohms, /__-45_degrees__ D. 141 ohms, /__45_degrees__ E5E17 (B) In polar coordinates, what is the impedance of a circuit that has an admittance of 7.09 millisiemens at 45 degrees? アドミッタンスが７．０９ｍＳで４５°の回路の、極座標でのインピーダンスは？ A. 5.03 x 10(-5) ohms, /__45_degrees__ B. 141 ohms, /__-45_degrees__ C. 19,900 ohms, /__-45_degrees__ D. 141 ohms, /__45_degrees__ E5E18 (C) In rectangular coordinates, what is the impedance of a circuit that has an admittance of 5 millisiemens at -30 degrees? アドミッタンスが５ｍＳで−３０°の回路の、正方座標でのインピーダンスは？ A. 173 - j100 ohms B. 200 + j100 ohms C. 173 + j100 ohms D. 200 - j100 ohms E5E19 (A) In rectangular coordinates, what is the admittance of a circuit that has an impedance of 240 ohms at 36.9 degrees? インピーダンスが２４０Ωで３６．９°の回路の、正方座標でのアドミッタンスは？ A. 3.33 x 10(-3) - j2.50 x 10(-3) siemens B. 3.33 x 10(-3) + j2.50 x 10(-3) siemens C. 192 + j144 siemens D. 3.33 - j2.50 siemens E5E20 (B) In polar coordinates, what is the impedance of a series circuit consisting of a resistance of 4 ohms, an inductive reactance of 4 ohms, and a capacitive reactance of 1 ohm? 極座標で、抵抗４Ω、コイルリアクタンス４Ω、コンデンサーリアクタンス１Ωから成る 直列回路のインピーダンスは？ A. 6.4 ohms, /__53_degrees__ B. 5 ohms, /__37_degrees__ C. 5 ohms, /__45_degrees__ D. 10 ohms, /__-51_degrees__ E5E21 (B) Which point on Figure E5-2 best represents the impedance of a series circuit consisting of a 400 ohm resistor and a 38 picofarad capacitor at 14 MHz? 図Ｅ５−２で、１４ＭＨｚで４００Ωの抵抗と３８ｐＦのコンデンサーから成る 直列回路のインピーダンスを最も良く表す点は？ A. Point 2 B. Point 4 C. Point 5 D. Point 6 E5E22 (B) Which point in Figure E5-2 best represents the impedance of a series circuit consisting of a 300 ohm resistor and an 18 microhenry inductor at 3.505 MHz? 図Ｅ５−２で、３．５０５ＭＨｚで３００Ωの抵抗と１８μＨのコイルから成る 直列回路のインピーダンスを最も良く表す点は？ A. Point 1 B. Point 3 C. Point 7 D. Point 8 E5E23 (A) Which point on Figure E5-2 best represents the impedance of a series circuit consisting of a 300 ohm resistor and a 19 picofarad capacitor at 21.200 MHz? 図Ｅ５−２で、２１．２００ＭＨｚで３００Ωの抵抗と１９ｐＦのコンデンサーから成る 直列回路のインピーダンスを最も良く表す点は？ A. Point 1 B. Point 3 C. Point 7 D. Point 8 E5F Skin effect; electrostatic and electromagnetic fields E5F01 (A) What is the result of skin effect? 表皮効果とは？ A. As frequency increases, RF current flows in a thinner layer of the conductor, closer to the surface 　　周波数が上がるつれて、ＲＦ電流は、導体のより表面に近い薄い層を流れる。 B. As frequency decreases, RF current flows in a thinner layer of the conductor, closer to the surface C. Thermal effects on the surface of the conductor increase the impedance D. Thermal effects on the surface of the conductor decrease the impedance E5F02 (C) What effect causes most of an RF current to flow along the surface of a conductor? ＲＦ電流の殆どを導体の表面に沿って流すのは？ A. Layer effect B. Seeburg effect C. Skin effect 　　表皮効果。 D. Resonance effect E5F03 (A) Where does almost all RF current flow in a conductor? 導体の何処を殆どのＲＦ電流は流れるか？ A. Along the surface of the conductor 　　導体の表面に沿って。 B. In the center of the conductor C. In a magnetic field around the conductor D. In a magnetic field in the center of the conductor E5F04 (D) Why does most of an RF current flow near the surface of a conductor? 殆どのＲＦ電流が導体の表面近くを流れる訳は？ A. Because a conductor has AC resistance due to self-inductance B. Because the RF resistance of a conductor is much less than the DC resistance C. Because of the heating of the conductor's interior D. Because of skin effect 　　表皮効果による。 E5F05 (C) Why is the resistance of a conductor different for RF currents than for direct currents? 導体の抵抗がＲＦ電流と直流電流で違う訳は？ A. Because the insulation conducts current at high frequencies B. Because of the Heisenburg Effect C. Because of skin effect 　　表皮効果による。 D. Because conductors are non-linear devices E5F06 (C) What device is used to store electrical energy in an electrostatic field? 静電界に電気エネルギーを蓄える機器は？ A. A battery B. A transformer C. A capacitor 　　コンデンサー。 D. An inductor E5F07 (B) What unit measures electrical energy stored in an electrostatic field? 静電界に蓄える電気エネルギーを量る単位は？ A. Coulomb B. Joule 　　ジュール。 C. Watt D. Volt E5F08 (B) What is a magnetic field? 磁界とは？ A. Current through the space around a permanent magnet B. The space through which a magnetic force acts 　　磁力が働く空間。 C. The space between the plates of a charged capacitor, through which a magnetic force acts D. The force that drives current through a resistor E5F09 (D) In what direction is the magnetic field oriented about a conductor in relation to the direction of electron flow? 電子の流れ方向に対して、導体の磁界の方向は？ A. In the same direction as the current B. In a direction opposite to the current C. In all directions; omnidirectional D. In a direction determined by the left-hand rule 　　左手の法則に従う方向。 E5F10 (D) What determines the strength of a magnetic field around a conductor? 導体の周りの磁界の強さを決めるのは？ A. The resistance divided by the current B. The ratio of the current to the resistance C. The diameter of the conductor D. The amount of current 　　電流の量。 E5F11 (B) What is the term for energy that is stored in an electromagnetic or electrostatic field? 磁界若しくは静電界に蓄えられたエネルギーの事を？ A. Amperes-joules B. Potential energy 　　ポテンシャルエネルギー。 C. Joules-coulombs D. Kinetic energy E5G Circuit Q; reactive power; power factor E5G01 (A) What is the Q of a parallel R-L-C circuit if the resonant frequency is 14.128 MHz, L is 2.7 microhenrys and R is 18 kilohms? Ｌが２．７μＨ、Ｒが１８ＫΩ、共振周波数が１４．１２８ＭＨｚの並列ＲＬＣ回路のＱは？ A. 75.1 B. 7.51 C. 71.5 D. 0.013 E5G02 (C) What is the Q of a parallel R-L-C circuit if the resonant frequency is 4.468 MHz, L is 47 microhenrys and R is 180 ohms? Ｌが４７μＨ、Ｒが１８０ＫΩ、共振周波数が４．４６８ＭＨｚの並列ＲＬＣ回路のＱは？ A. 0.00735 B. 7.35 C. 0.136 D. 13.3 E5G03 (D) What is the Q of a parallel R-L-C circuit if the resonant frequency is 7.125 MHz, L is 8.2 microhenrys and R is 1 kilohm? Ｌが８．２μＨ、Ｒが１ＫΩ、共振周波数が７．１２５ＭＨｚの並列ＲＬＣ回路のＱは？ A. 36.8 B. 0.273 C. 0.368 D. 2.72 E5G04 (B) What is the Q of a parallel R-L-C circuit if the resonant frequency is 7.125 MHz, L is 12.6 microhenrys and R is 22 kilohms? Ｌが１２．６μＨ、Ｒが２２ＫΩ、共振周波数が７．１２５ＭＨｚの並列ＲＬＣ回路のＱは？ A. 22.1 B. 39 C. 25.6 D. 0.0256 E5G05 (D) What is the Q of a parallel R-L-C circuit if the resonant frequency is 3.625 MHz, L is 42 microhenrys and R is 220 ohms? Ｌが４２μＨ、Ｒが２２０Ω、共振周波数が３．６２５ＭＨｚの並列ＲＬＣ回路のＱは？ A. 23 B. 0.00435 C. 4.35 D. 0.23 E5G06 (C) Why is a resistor often included in a parallel resonant circuit? 並列共振回路に抵抗が入れられる訳は？ A. To increase the Q and decrease the skin effect B. To decrease the Q and increase the resonant frequency C. To decrease the Q and increase the bandwidth 　　Ｑを下げて、帯域幅を増やす為。 D. To increase the Q and decrease the bandwidth E5G07 (D) What is the term for an out-of-phase, nonproductive power associated with inductors and capacitors? コイルとコンデンサーに対する位相のずれた非生産的電力の事を？ A. Effective power B. True power C. Peak envelope power D. Reactive power 　　リアクティブ電力。 E5G08 (B) In a circuit that has both inductors and capacitors, what happens to reactive power? コイルとコンデンサーの両方の入った回路でリアクティブ電力はどうなる？ A. It is dissipated as heat in the circuit B. It goes back and forth between magnetic and electric fields, but is not dissipated 　　磁界と電界の間を行ったり来たりして消費されない。 C. It is dissipated as kinetic energy in the circuit D. It is dissipated in the formation of inductive and capacitive fields E5G09 (A) In a circuit where the AC voltage and current are out of phase, how can the true power be determined? ＡＣ電圧と電流の位相がずれた回路で、本当の電力はどうのように決めるか？ A. By multiplying the apparent power times the power factor 　　見かけの電力に電力係数を掛ける。 B. By subtracting the apparent power from the power factor C. By dividing the apparent power by the power factor D. By multiplying the RMS voltage times the RMS current E5G10 (C) What is the power factor of an R-L circuit having a 60 degree phase angle between the voltage and the current? 電圧と電流の位相角６０°のＲＬ回路の電力係数は？ A. 1.414 B. 0.866 C. 0.5 D. 1.73 E5G11 (B) How many watts are consumed in a circuit having a power factor of 0.2 if the input is 100-V AC at 4 amperes? 入力が１００ＶＡＣで４Ａ、電力係数が０．２の回路で消費されるＷ数は？ A. 400 watts B. 80 watts C. 2000 watts D. 50 watts E5G12 (A) Why would the power used in a circuit be less than the product of the magnitudes of the AC voltage and current? 回路で使われる電力がＡＣ電圧と電流の積より小さい訳は？ A. Because there is a phase angle greater than zero between the current and voltage 　　電圧と電流の間にゼロより大きい位相角が在るから。 B. Because there are only resistances in the circuit C. Because there are no reactances in the circuit D. Because there is a phase angle equal to zero between the current and voltage E5G13 (B) What is the Q of a parallel RLC circuit if the resonant frequency is 14.128 MHz, L is 4.7 microhenrys and R is 18 kilohms? Ｌが４．７μＨ、Ｒが１８ＫΩ、共振周波数が１４．１２８ＭＨｚの並列ＲＬＣ回路のＱは？ A. 4.31 B. 43.1 C. 13.3 D. 0.023 E5G14 (D) What is the Q of a parallel RLC circuit if the resonant frequency is 14.225 MHz, L is 3.5 microhenrys and R is 10 kilohms? Ｌが３．５μＨ、Ｒが１０ＫΩ、共振周波数が１４．２２５ＭＨｚの並列ＲＬＣ回路のＱは？ A. 7.35 B. 0.0319 C. 71.5 D. 31.9 E5G15 (A) What is the Q of a parallel RLC circuit if the resonant frequency is 7.125 MHz, L is 10.1 microhenrys and R is 100 ohms? Ｌが１０．１μＨ、Ｒが１００Ω、共振周波数が７．１２５ＭＨｚの並列ＲＬＣ回路のＱは？ A. 0.221 B. 4.52 C. 0.00452 D. 22.1 E5G16 (B) What is the Q of a parallel RLC circuit if the resonant frequency is 3.625 MHz, L is 3 microhenrys and R is 2.2 kilohms? Ｌが３μＨ、Ｒが２．２ＫΩ、共振周波数が３．６２５ＭＨｚの並列ＲＬＣ回路のＱは？ A. 0.031 B. 32.2 C. 31.1 D. 25.6 E5H Effective radiated power; system gains and losses E5H01 (B) What is the effective radiated power of a repeater station with 50 watts transmitter power output, 4-dB feed line loss, 2-dB duplexer loss, 1-dB circulator loss and 6-dBd antenna gain? 送信出力５０Ｗ、給電線損失４ｄＢ、デュプレクサー損失２ｄＢ、サーキュレーター損失１ｄＢ、 アンテナ利得６ｄＢｄのリピーターの有効放射電力は？ A. 199 watts B. 39.7 watts C. 45 watts D. 62.9 watts E5H02 (C) What is the effective radiated power of a repeater station with 50 watts transmitter power output, 5-dB feed line loss, 3-dB duplexer loss, 1-dB circulator loss and 7-dBd antenna gain? 送信出力５０Ｗ、給電線損失５ｄＢ、デュプレクサー損失３ｄＢ、サーキュレーター損失１ｄＢ、 アンテナ利得７ｄＢｄのリピーターの有効放射電力は？ A. 79.2 watts B. 315 watts C. 31.5 watts D. 40.5 watts E5H03 (D) What is the effective radiated power of a station with 75 watts transmitter power output, 4-dB feed line loss and 10-dBd antenna gain? 送信出力７５Ｗ、給電線損失４ｄＢ、アンテナ利得１０ｄＢｄの局の有効放射電力は？ A. 600 watts B. 75 watts C. 150 watts D. 299 watts E5H04 (A) What is the effective radiated power of a repeater station with 75 watts transmitter power output, 5-dB feed line loss, 3-dB duplexer loss, 1-dB circulator loss and 6-dBd antenna gain? 送信出力７５Ｗ、給電線損失５ｄＢ、デュプレクサー損失３ｄＢ、サーキュレーター損失１ｄＢ、 アンテナ利得６ｄＢｄのリピーターの有効放射電力は？ A. 37.6 watts B. 237 watts C. 150 watts D. 23.7 watts E5H05 (D) What is the effective radiated power of a station with 100 watts transmitter power output, 1-dB feed line loss and 6-dBd antenna gain? 送信出力１００Ｗ、給電線損失１ｄＢ、アンテナ利得６ｄＢｄの局の有効放射電力は？ A. 350 watts B. 500 watts C. 20 watts D. 316 watts E5H06 (B) What is the effective radiated power of a repeater station with 100 watts transmitter power output, 5-dB feed line loss, 3-dB duplexer loss, 1-dB circulator loss and 10-dBd antenna gain? 送信出力１００Ｗ、給電線損失５ｄＢ、デュプレクサー損失３ｄＢ、サーキュレーター損失１ｄＢ、 アンテナ利得１０ｄＢｄのリピーターの有効放射電力は？ A. 794 watts B. 126 watts C. 79.4 watts D. 1260 watts E5H07 (C) What is the effective radiated power of a repeater station with 120 watts transmitter power output, 5-dB feed line loss, 3-dB duplexer loss, 1-dB circulator loss and 6-dBd antenna gain? 送信出力１２０Ｗ、給電線損失５ｄＢ、デュプレクサー損失３ｄＢ、サーキュレーター損失１ｄＢ、 アンテナ利得６ｄＢｄのリピーターの有効放射電力は？ A. 601 watts B. 240 watts C. 60 watts D. 79 watts E5H08 (D) What is the effective radiated power of a repeater station with 150 watts transmitter power output, 2-dB feed line loss, 2.2-dB duplexer loss and 7-dBd antenna gain? 送信出力１５０Ｗ、給電線損失２ｄＢ、デュプレクサー損失２．２ｄＢ、アンテナ利得７ｄＢｄの リピーターの有効放射電力は？ A. 1977 watts B. 78.7 watts C. 420 watts D. 286 watts E5H09 (A) What is the effective radiated power of a repeater station with 200 watts transmitter power output, 4-dB feed line loss, 3.2-dB duplexer loss, 0.8-dB circulator loss and 10-dBd antenna gain? 送信出力２００Ｗ、給電線損失４ｄＢ、デュプレクサー損失３．２ｄＢ、サーキュレーター損失０．８ｄＢ、 アンテナ利得１０ｄＢｄのリピーターの有効放射電力は？ A. 317 watts B. 2000 watts C. 126 watts D. 300 watts E5H10 (B) What is the effective radiated power of a repeater station with 200 watts transmitter power output, 2-dB feed line loss, 2.8-dB duplexer loss, 1.2-dB circulator loss and 7-dBd antenna gain? 送信出力２００Ｗ、給電線損失２ｄＢ、デュプレクサー損失２．８ｄＢ、サーキュレーター損失１．２ｄＢ、 アンテナ利得７ｄＢｄのリピーターの有効放射電力は？ A. 159 watts B. 252 watts C. 632 watts D. 63.2 watts E5H11 (C) What term describes station output (including the transmitter, antenna and everything in between), when considering transmitter power and system gains and losses? 送信機出力、システム（送信機、アンテナ、両者間の全て）利得と損失を考慮して、局の出力を表す用語は？ A. Power factor B. Half-power bandwidth C. Effective radiated power 　　有効放射電力は？ D. Apparent power E5H12 (A) What is reactive power? リアクティブ電力とは？ A. Wattless, nonproductive power 　　無Ｗ、非生産電力。 B. Power consumed in wire resistance in an inductor C. Power lost because of capacitor leakage D. Power consumed in circuit Q E5H13 (D) What is the power factor of an RL circuit having a 45 degree phase angle between the voltage and the current? 電圧と電流の位相角４５°のＲＬ回路の電力係数は？ A. 0.866 B. 1.0 C. 0.5 D. 0.707 E5H14 (C) What is the power factor of an RL circuit having a 30 degree phase angle between the voltage and the current? 電圧と電流の位相角３０°のＲＬ回路の電力係数は？ A. 1.73 B. 0.5 C. 0.866 D. 0.577 E5H15 (D) How many watts are consumed in a circuit having a power factor of 0.6 if the input is 200V AC at 5 amperes? 入力が２００ＶＡＣで５Ａ、電力係数が０．６の回路が消費する電力は？ A. 200 watts B. 1000 watts C. 1600 watts D. 600 watts E5H16 (B) How many watts are consumed in a circuit having a power factor of 0.71 if the apparent power is 500 watts? 見かけの電力が５００Ｗ、電力係数が０．７１の回路が消費する電力は？ A. 704 W B. 355 W C. 252 W D. 1.42 mW E5I Photoconductive principles and effects E5I01 (B) What is photoconductivity? 光電導とは？ A. The conversion of photon energy to electromotive energy B. The increased conductivity of an illuminated semiconductor junction 　　光の当たった半導体接合面の電導度が上がる事。 C. The conversion of electromotive energy to photon energy D. The decreased conductivity of an illuminated semiconductor junction E5I02 (A) What happens to the conductivity of a photoconductive material when light shines on it? 光電導性物質に光が当たったら電導度はどうなるか？ A. It increases 　　上がる。 B. It decreases C. It stays the same D. It becomes unstable E5I03 (D) What happens to the resistance of a photoconductive material when light shines on it? 光電導性物質に光が当たったら、抵抗はどうなるか？ A. It increases B. It becomes unstable C. It stays the same D. It decreases 　　下がる。 E5I04 (C) What happens to the conductivity of a semiconductor junction when light shines on it? 半導体接合面に光が当たると電導度はどうなるか？ A. It stays the same B. It becomes unstable C. It increases 　　上がる。 D. It decreases E5I05 (D) What is an optocoupler? 光結合素子とは？ A. A resistor and a capacitor B. A frequency modulated helium-neon laser C. An amplitude modulated helium-neon laser D. An LED and a phototransistor 　　ＬＥＤと光トランジスター。 E5I06 (A) What is an optoisolator? 光分離素子とは？ A. An LED and a phototransistor 　　ＬＥＤと光トランジスター。 B. A P-N junction that develops an excess positive charge when exposed to light C. An LED and a capacitor D. An LED and a solar cell E5I07 (B) What is an optical shaft encoder? 光軸エンコーダーとは？ A. An array of neon or LED indicators whose light transmission path is controlled by a rotating wheel B. An array of optocouplers whose light transmission path is controlled by a rotating wheel 　　光結合素子の配列で、その光の通り道が回転盤によって制御されているもの。 C. An array of neon or LED indicators mounted on a rotating wheel in a coded pattern D. An array of optocouplers mounted on a rotating wheel in a coded pattern E5I08 (D) What characteristic of a crystalline solid will photoconductivity change? 光電導が変化させる結晶固体の性質は？ A. The capacitance B. The inductance C. The specific gravity D. The resistance 　　抵抗。 E5I09 (C) Which material will exhibit the greatest photoconductive effect when visible light shines on it? 光が当たると、最も大きな光電導度効果の在る物質は？ A. Potassium nitrate B. Lead sulfide C. Cadmium sulfide 　　硫化カドミウム。 D. Sodium chloride E5I10 (B) Which material will exhibit the greatest photoconductive effect when infrared light shines on it? 赤外光が当たると、最も大きな光電導度効果の在る物質は？ A. Potassium nitrate B. Lead sulfide 　　硫化鉛。 C. Cadmium sulfide D. Sodium chloride E5I11 (A) Which material is affected the most by photoconductivity? 光電導度によって最も影響される物質は？ A. A crystalline semiconductor 　　結晶半導体。 B. An ordinary metal C. A heavy metal D. A liquid semiconductor E5I12 (B) What characteristic of optoisolators is often used in power supplies? 電源に良く使われる光分離素子の性質は？ A. They have low impedance between the light source and the phototransistor B. They have very high impedance between the light source and the phototransistor 　　光源と光トランジスター間のインピーダンスが非常に高い。 C. They have low impedance between the light source and the LED D. They have very high impedance between the light source and the LED E5I13 (C) What characteristic of optoisolators makes them suitable for use with a triac to form the solid-state equivalent of a mechanical relay for a 120 V AC household circuit? １２０ＶＡＣ家庭用回路の機械式リレーの半導体による等価回路を作るのにトライアックでの 使用を可能とする光分離素子の性質は？ A. Optoisolators provide a low impedance link between a control circuit and a power circuit B. Optoisolators provide impedance matching between the control circuit and power circuit C. Optoisolators provide a very high degree of electrical isolation between a control circuit and a power circuit 　　光分離素子によって制御回路と電源回路の電気的な分離の程度が非常に高く出来る。 D. Optoisolators eliminate (isolate) the effects of reflected light in the control circuit SUBELEMENT E6 -- CIRCUIT COMPONENTS [5 Exam Questions -- 5 Groups] E6A Semiconductor material: Germanium, Silicon, P-type, N-type; Transistor types: NPN, PNP, junction, power; field-effect transistors (FETs): enhancement mode; depletion mode; MOS; CMOS; N-channel; P-channel E6A01 (C) In what application is gallium arsenide used as a semiconductor material in preference to germanium or silicon? 半導体物質としてゲルマニウムやシリコンより砒素化ガリウムが好まれるアプリは？ A. In high-current rectifier circuits B. In high-power audio circuits C. At microwave-frequency frequencies 　　マイクロ波周波数で。 D. At very low frequency RF circuits E6A02 (A) What type of semiconductor material contains more free electrons than pure germanium or silicon crystals? 純粋なゲルマニウムやシリコン結晶よりも自由電子を多く含む半導体物質は？ A. N-type 　　Ｎタイプ。 B. P-type C. Bipolar D. Insulated gate E6A03 (C) What are the majority charge carriers in P-type semiconductor material? Ｐタイプ半導体物質の主な電荷キャリヤーは？ A. Free neutrons B. Free protons C. Holes 　　正孔。 D. Free electrons E6A04 (C) What is the name given to an impurity atom that adds holes to a semiconductor crystal structure? 半導体結晶構造に正孔を加える為に加えられる不純原子を何と言うか？ A. Insulator impurity B. N-type impurity C. Acceptor impurity 　　受容体不純物。 D. Donor impurity E6A05 (C) What is the alpha of a bipolar transistor? バイポーラトランジスターのαとは？ A. The change of collector current with respect to base current B. The change of base current with respect to collector current C. The change of collector current with respect to emitter current 　　エミッタ電流に対するコレクタ電流の変化。 D. The change of collector current with respect to gate current E6A06 (A) In Figure E6-1, what is the schematic symbol for a PNP transistor? 図Ｅ６−１で、ＰＮＰトランジスタの模式図は？ A. 1 B. 2 C. 4 D. 5 E6A07 (D) What term indicates the frequency at which a transistor grounded base current gain has decreased to 0.7 of the gain obtainable at 1 kHz? トランジスタの接地されたベース電流のゲインが１ＫＨｚでのゲインの０．７まで下がる 周波数の事を何と言うか？ A. Corner frequency B. Alpha rejection frequency C. Beta cutoff frequency D. Alpha cutoff frequency 　　αカットオフ周波数。 E6A08 (A) What is a depletion-mode FET? デプレッション型ＦＥＴとは？ A. An FET that has a channel with no gate voltage applied; a current flows with zero gate voltage 　　ゲート電圧を加えないチャンネルを持つＦＥＴ；ゲート電圧無しで電流が流れる。 B. An FET that has a channel that blocks current when the gate voltage is zero C. An FET without a channel; no current flows with zero gate voltage D. An FET without a channel to hinder current through the gate E6A09 (B) In Figure E6-2, what is the schematic symbol for an N-channel dual-gate MOSFET? 図Ｅ６−２で、ＮチャンネルデュアルゲートＭＯＳＦＥＴの模式図は？ A. 2 B. 4 C. 5 D. 6 E6A10 (A) In Figure E6-2, what is the schematic symbol for a P-channel junction FET? 図Ｅ６−２で、Ｐチャンネル接合型ＦＥＴの模式図は？ A. 1 B. 2 C. 3 D. 6 E6A11 (D) Why do many MOSFET devices have built-in gate-protective Zener diodes? 多くのＭＯＳＦＥＴ機器がゲート保護ツェナーダイオードを内蔵するのは？ A. To provide a voltage reference for the correct amount of reverse-bias gate voltage B. To protect the substrate from excessive voltages C. To keep the gate voltage within specifications and prevent the device from overheating D. To prevent the gate insulation from being punctured by small static charges or excessive voltages 　　少量の静電荷や過剰な電圧によってデートの絶縁が貫通されないように。 E6A12 (C) What do the initials CMOS stand for? ＣＭＯＳは何の略号か？ A. Common mode oscillating system B. Complementary mica-oxide silicon C. Complementary metal-oxide semiconductor 　　相補金属−酸化物半導体。 D. Complementary metal-oxide substrate E6A13 (C) How does DC input impedance on the gate of a field-effect transistor compare with the DC input impedance of a bipolar transistor? ＦＥＴのゲートＤＣ入力インピーダンスとバイポーラトランジスタの ＤＣ入力インピーダンスを比べると？ A. They cannot be compared without first knowing the supply voltage B. An FET has low input impedance; a bipolar transistor has high input impedance C. An FET has high input impedance; a bipolar transistor has low input impedance 　　ＦＥＴの入力インピーダンスは高く、バイポーラトランジスタの入力インピーダンスは低い。 D. The input impedance of FETs and bipolar transistors is the same E6A14 (B) What two elements widely used in semiconductor devices exhibit both metallic and nonmetallic characteristics? 金属と非金属の特性を示す半導体機器に広く使われている２元素は？ A. Silicon and gold B. Silicon and germanium 　　シリコンとゲルマニウム。 C. Galena and germanium D. Galena and bismuth E6A15 (B) What type of semiconductor material contains fewer free electrons than pure germanium or silicon crystals? 純粋なゲルマニウムやシリコン結晶よりも自由電子を少なく含む半導体物質は？ A. N-type B. P-type 　　Ｐタイプ。 C. Superconductor-type D. Bipolar-type E6A16 (B) What are the majority charge carriers in N-type semiconductor material? Ｎタイプ半導体物質の主な電荷キャリヤーは？ A. Holes B. Free electrons 　　自由電子。 C. Free protons D. Free neutrons E6A17 (D) What are the three terminals of a field-effect transistor? ＦＥＴの３端子は？ A. Gate 1, gate 2, drain B. Emitter, base, collector C. Emitter, base 1, base 2 D. Gate, drain, source 　　ゲート、ドレン、ソース。 E6B Diodes: Zener, tunnel, varactor, hot-carrier, junction, point contact, PIN and light emitting; operational amplifiers (inverting amplifiers, noninverting amplifiers, voltage gain, frequency response, FET amplifier circuits, single- stage amplifier applications); phase-locked loops E6B01 (B) What is the principal characteristic of a Zener diode? ツェナーダイオードの主要な特性は？ A. A constant current under conditions of varying voltage B. A constant voltage under conditions of varying current 　　電流の変化の元で一定の電圧。 C. A negative resistance region D. An internal capacitance that varies with the applied voltage E6B02 (C) What is the principal characteristic of a tunnel diode? トンネルダイオードの主要な特性は？ A. A high forward resistance B. A very high PIV C. A negative resistance region 　　負抵抗領域。 D. A high forward current rating E6B03 (C) What special type of diode is capable of both amplification and oscillation? 増幅と発信の両方が可能なダイオードは？ A. Point contact B. Zener C. Tunnel 　　トンネルダイオード。 D. Junction E6B04 (A) What type of semiconductor diode varies its internal capacitance as the voltage applied to its terminals varies? 端子に加えられた電圧が変化すると内部容量が変化する半導体ダイオードは？ A. Varactor 　　バラクタダイオード。 B. Tunnel C. Silicon-controlled rectifier D. Zener E6B05 (D) In Figure E6-3, what is the schematic symbol for a varactor diode? 図Ｅ６−３で、バラクタダイオードの模式図は？ A. 8 B. 6 C. 2 D. 1 E6B06 (D) What is a common use of a hot-carrier diode? ホットキャリヤーダイオードの一般的な使われ方は？ A. As balanced mixers in FM generation B. As a variable capacitance in an automatic frequency control circuit C. As a constant voltage reference in a power supply D. As VHF and UHF mixers and detectors 　　ＶＨＦとＵＨＦの混合器と検波器。 E6B07 (B) What limits the maximum forward current rating in a junction diode? 接合型ダイオードの最大順流電流規格値を制限するものは？ A. Peak inverse voltage B. Junction temperature 　　接合面温度。 C. Forward voltage D. Back EMF E6B08 (A) Structurally, what are the two main categories of semiconductor diodes? 構造的に、半導体ダイオードの主要な２カテゴリーは？ A. PN junction and metal-semiconductor junction 　　ＰＮ接合と金属−半導体接合。 B. Electrolytic and PN junction C. CMOS-field effect and metal-semiconductor junction D. Vacuum and point contact E6B09 (C) What is a common use for point contact diodes? 点接触ダイオードの一般的使われ方は？ A. As a constant current source B. As a constant voltage source C. As an RF detector 　　ＲＦ検波器。 D. As a high voltage rectifier E6B10 (B) In Figure E6-3, what is the schematic symbol for a light-emitting diode? 図Ｅ６−３で、発光ダイオードの模式図は？ A. 1 B. 5 C. 6 D. 7 E6B11 (C) What voltage gain can be expected from the circuit in Figure E6-4 when R1 is 10 ohms and RF is 470 ohms? 図Ｅ６−４で、Ｒ１が１０Ω、ＲＦあ４７０Ωの時、回路の電圧ゲインは？ A. 0.21 B. 94 C. 47 D. 24 E6B12 (D) How does the gain of a theoretically ideal operational amplifier vary with frequency? 理論的に理想オペアンプのゲインは、周波数によってどう変わるか？ A. It increases linearly with increasing frequency B. It decreases linearly with increasing frequency C. It decreases logarithmically with increasing frequency D. It does not vary with frequency 　　周波数によって変化しない。 E6B13 (A) What essentially determines the output impedance of a FET common-source amplifier? ソース接地のＦＥＴアンプの出力インピーダンスを実質的に決めるのは？ A. The drain resistor 　　ドレン抵抗。 B. The input impedance of the FET C. The drain supply voltage D. The gate supply voltage E6B14 (D) What will be the voltage of the circuit shown in Figure E6-4 if R1 is 1000 ohms and RF is 10,000 ohms and 0.23 volts is applied to the input? 図Ｅ６−４で、Ｒ１が１０００Ω、ＲＦが１０、０００Ω、入力が０．２３Ｖの時、 回路の電圧は？ A. 0.23 volts B. 2.3 volts C. -0.23 volts D. -2.3 volts E6B15 (C) What voltage gain can be expected from the circuit in Figure E6-4 when R1 is 1800 ohms and RF is 68 kilohms? 図Ｅ６−４で、Ｒ１が１８００Ω、ＲＦが６８ＫΩの時、回路の電圧ゲインは？ A. 1 B. 0.03 C. 38 D. 76 E6B16 (B) What voltage gain can be expected from the circuit in Figure E6-4 when R1 is 3300 ohms and RF is 47 kilohms? 図Ｅ６−４で、Ｒ１が３３００Ω、ＲＦが４７ＫΩの時、回路の電圧ゲインは？ A. 28 B. 14 C. 7 D. 0.07 E6B17 (This question has been formally withdrawn by the QPC) E6B17 (A) What will be the voltage at the output in the circuit shown in Figure E6-4, if R1 is 1,000 ohms and RF is 1,000 ohms when 10 millivolts is applied to the input? （この問題は、正式にＱＰＣによって取り消された） A. 10 millivolts B. 100 millivolts C. 10 millivolts D. 100 millivolts E6B18 (B) Which of the following circuits is used to recover audio from an FM voice signal? ＦＭ音声信号から音声を取り出す為に使われる回路は？ A. A doubly balanced mixer B. A phase-locked loop 　　位相同期ループ。 C. A differential voltage amplifier D. A variable frequency oscillator E6B19 (A) What is the capture range of a phase-locked loop circuit? 位相同期ループ回路のキャプチャレンジとは？ A. The frequency range over which the circuit can lock 　　回路が同期を取れる周波数範囲。 B. The voltage range over which the circuit can lock C. The input impedance range over which the circuit can lock D. The range of time it takes the circuit to lock E6B20 (D) How are junction diodes rated? 接合型ダイオードの定格は？ A. Maximum forward current and capacitance B. Maximum reverse current and PIV C. Maximum reverse current and capacitance D. Maximum forward current and PIV 　　最大順流電流と最大逆電圧。 E6B21 (C) What is one common use for PIN diodes? ＰＩＮダイオードの一般的使い方の１つは？ A. As a constant current source B. As a constant voltage source C. As an RF switch 　　ＲＦスイッチ。 D. As a high voltage rectifier E6B22 (B) What type of bias is required for an LED to produce luminescence? ＬＥＤを発光させる為にはどんなバイスが必要か？ A. Reverse bias B. Forward bias 　　順流バイアス。 C. Zero bias D. Inductive bias E6B23 (A) What is an operational amplifier? オペアンプとは？ A. A high-gain, direct-coupled differential amplifier whose characteristics are determined by components external to the amplifier 　　高ゲイン、直接結合の差分アンプで特性は、アンプ外の部品によって決まる。 B. A high-gain, direct-coupled audio amplifier whose characteristics are determined by components external to the amplifier C. An amplifier used to increase the average output of frequency modulated amateur signals to the legal limit D. A program subroutine that calculates the gain of an RF amplifier E6B24 (C) What is meant by the term op-amp input-offset voltage? オペアンプの入力オフセット電圧とは？ A. The output voltage of the op-amp minus its input voltage B. The difference between the output voltage of the op-amp and the input voltage required in the following stage C. The potential between the amplifier input terminals of the op-amp in a closed-loop condition 　　閉ループのオペアンプの入力端子間の電圧。 D. The potential between the amplifier input terminals of the op-amp in an open-loop condition E6B25 (D) What is the input impedance of a theoretically ideal op-amp? 理論的に理想のオペアンプの入力インピーダンスは？ A. 100 ohms B. 1000 ohms C. Very low D. Very high 　　非常に高い。 E6B26 (A) What is the output impedance of a theoretically ideal op-amp? 理論的に理想のオペアンプの出力インピーダンスは？ A. Very low 　　非常に低い。 B. Very high C. 100 ohms D. 1000 ohms E6B27 (C) What is a phase-locked loop circuit? 位相時ループ回路とは？ A. An electronic servo loop consisting of a ratio detector, reactance modulator, and voltage-controlled oscillator B. An electronic circuit also known as a monostable multivibrator C. An electronic servo loop consisting of a phase detector, a low-pass filter and voltage-controlled oscillator 　　位相比較器、低域フィルタ、電圧制御発振器から出来た電子サーボループ。 D. An electronic circuit consisting of a precision push-pull amplifier with a differential input E6B28 (D) What functions are performed by a phase-locked loop? 位相同期ループが行う事は？ A. Wide-band AF and RF power amplification B. Comparison of two digital input signals, digital pulse counter C. Photovoltaic conversion, optical coupling D. Frequency synthesis, FM demodulation 　　周波数合成、ＦＭ復調。 E6C TTL digital integrated circuits; CMOS digital integrated circuits; gates E6C01 (C) What is the recommended power supply voltage for TTL series integrated circuits? ＴＴＬ直列集積回路の推奨電源電圧は？ A. 12 volts B. 1.5 volts C. 5 volts D. 13.6 volts E6C02 (A) What logic state do the inputs of a TTL device assume if they are left open? ＴＴＬ機器の入力が開である時の論理状態は？ A. A high-logic state 　　高論理状態。 B. A low-logic state C. The device becomes randomized and will not provide consistent high or low- logic states D. Open inputs on a TTL device are ignored E6C03 (A) What level of input voltage is high in a TTL device operating with a 5-volt power supply? ５Ｖ電源で作動中のＴＴＬ機器の高となる入力電圧レベルは？ A. 2.0 to 5.5 volts B. 1.5 to 3.0 volts C. 1.0 to 1.5 volts D. -5.0 to -2.0 volts E6C04 (C) What level of input voltage is low in a TTL device operating with a 5-volt power-supply? ５Ｖ電源で作動中のＴＴＬ機器の低となる入力電圧レベルは？ A. -2.0 to -5.5 volts B. 2.0 to 5.5 volts C. 0.0 to 0.8 volts D. -0.8 to 0.4 volts E6C05 (D) What is NOT a major advantage of CMOS over other devices? ＣＭＯＳが他のデバイスより優れている点でないものは？ A. Small size B. Low power consumption C. Low cost D. Differential output 　　差分出力。 E6C06 (C) Why do CMOS digital integrated circuits have high immunity to noise on the input signal or power supply? ＣＭＯＳデジタル集積回路が入力信号や電源のノイズに強い訳は？ A. Larger bypass capacitors are used in CMOS circuit design B. The input switching threshold is about two times the power supply voltage C. The input switching threshold is about one-half the power supply voltage 　　入力切替閾値が電源電圧のおよそ１／２であるから。 D. Input signals are stronger E6C07 (A) In Figure E6-5, what is the schematic symbol for an AND gate? 図Ｅ６−５で、ＡＮＤゲートの模式図は？ A. 1 B. 2 C. 3 D. 4 E6C08 (B) In Figure E6-5, what is the schematic symbol for a NAND gate? 図Ｅ６−５で、ＮＡＮＤゲートの模式図は？ A. 1 B. 2 C. 3 D. 4 E6C09 (B) In Figure E6-5, what is the schematic symbol for an OR gate? 図Ｅ６−５で、ＯＲゲートの模式図は？ A. 2 B. 3 C. 4 D. 6 E6C10 (D) In Figure E6-5, what is the schematic symbol for a NOR gate? 図Ｅ６−５で、ＮＯＲゲートの模式図は？ A. 1 B. 2 C. 3 D. 4 E6C11 (C) In Figure E6-5, what is the schematic symbol for the NOT operation (inverter)? 図Ｅ６−５で、ＮＯＴ操作（反転）の模式図は？ A. 2 B. 4 C. 5 D. 6 E6D Vidicon and cathode-ray tube devices; charge-coupled devices (CCDs); liquid crystal displays (LCDs); toroids: permeability, core material, selecting, winding E6D01 (D) How is the electron beam deflected in a vidicon? ビディコンで電子線はどのように曲げられるか？ A. By varying the beam voltage B. By varying the bias voltage on the beam forming grids inside the tube C. By varying the beam current D. By varying electromagnetic fields 　　電磁場を変える事で。 E6D02 (D) What is cathode ray tube (CRT) persistence? ＣＲＴ残留とは？ A. The time it takes for an image to appear after the electron beam is turned on B. The relative brightness of the display under varying conditions of ambient light C. The ability of the display to remain in focus under varying conditions D. The length of time the image remains on the screen after the beam is turned off 　　ビームが切られてから影像がスクリーンに残る時間。 E6D03 (A) If a cathode ray tube (CRT) is designed to operate with an anode voltage of 25,000 volts, what will happen if the anode voltage is increased to 35,000 volts? 陽極電圧２５、０００Ｖで作動するように設計されたＣＲＴで陽極電圧が ３５、０００Ｖまで上がったらどうなる？ A. The image size will decrease and the tube will produce X-rays 　　影像のサイズが小さくなってＸ線が放射される。 B. The image size will increase and the tube will produce X-rays C. The image will become larger and brighter D. There will be no apparent change E6D04 (B) Exceeding what design rating can cause a cathode ray tube (CRT) to generate X- rays? ＣＲＴがＸ線を発生するのは設計定格値のどれを越えた時？ A. The heater voltage B. The anode voltage 　　陽極電圧。 C. The operating temperature D. The operating frequency E6D05 (C) Which of the following is true of a charge-coupled device (CCD)? ＣＣＤについて正しい事は？ A. Its phase shift changes rapidly with frequency B. It is a CMOS analog-to-digital converter C. It samples an analog signal and passes it in stages from the input to the output 　　アナログ信号を拾って、入力から出力へ段階的に渡す。 D. It is used in a battery charger circuit E6D06 (A) What function does a charge-coupled device (CCD) serve in a modern video camera? 最新のビデオカメラでＣＣＤのする事は？ A. It stores photogenerated charges as signals corresponding to pixels 　　光によって発生する電荷をピクセルに対応する信号として保存する。 B. It generates the horizontal pulses needed for electron beam scanning C. It focuses the light used to produce a pattern of electrical charges corresponding to the image D. It combines audio and video information to produce a composite RF signal E6D07 (B) What is a liquid-crystal display (LCD)? ＬＣＤとは？ A. A modern replacement for a quartz crystal oscillator which displays its fundamental frequency B. A display that uses a crystalline liquid to change the way light is refracted 　　光の屈折を変えさせる結晶液体を使った表示機。 C. A frequency-determining unit for a transmitter or receiver D. A display that uses a glowing liquid to remain brightly lit in dim light E6D08 (D) What material property determines the inductance of a toroidal inductor with a 10-turn winding? １０巻トロイドコイルのインダクタンスを決める物性とは？ A. Core load current B. Core resistance C. Core reactivity D. Core permeability 　　芯の透磁率。 E6D09 (B) By careful selection of core material, over what frequency range can toroidal cores produce useful inductors? 芯材を注意して選択すれば、トロイドが役に立つコイルになる周波数範囲は？ A. From a few kHz to no more than several MHz B. From 100 Hz to at least 1000 MHz 　　１００Ｈｚから少なくとも１０００ＭＨｚ。 C. From 100 Hz to no more than 3000 kHz D. From a few hundred MHz to at least 1000 GHz E6D10 (B) What is one important reason for using powdered-iron toroids rather than ferrite toroids in an inductor? コイルにフェライトトロイドではなくパウダー鉄のトロイドを使う重要な理由は？ A. Powdered-iron toroids generally have greater initial permeabilities B. Powdered-iron toroids generally have better temperature stability 　　パウダー鉄トロイドは、一般に温度安定性が優れている。 C. Powdered-iron toroids generally require fewer turns to produce a given inductance value D. Powdered-iron toroids are easier to use with surface-mount technology E6D11 (C) What devices are commonly used as VHF and UHF parasitic suppressors at the input and output terminals of transistorized HF amplifiers? トランジスタＨＦアンプの入力と出力端子にＶＨＦとＵＨＦ寄生抑制機器として 良く使われるものは？ A. Electrolytic capacitors B. Butterworth filters C. Ferrite beads 　　フェライトビーズ。 D. Steel-core toroids E6D12 (A) What is a primary advantage of using a toroidal core instead of a solenoidal core in an inductor? コイルにソレノイドでなくトロイドを使う一番の利点は？ A. Toroidal cores contain most of the magnetic field within the core material 　　トロイドは、磁界の殆どを芯材の中に閉じ込める。 B. Toroidal cores make it easier to couple the magnetic energy into other components C. Toroidal cores exhibit greater hysteresis D. Toroidal cores have lower Q characteristics E6D13 (C) How many turns will be required to produce a 1-mH inductor using a ferrite toroidal core that has an inductance index (A L) value of 523 millihenrys/1000 turns? インダクタンス指数が５２３ｍＨ／１０００巻きのフェライトトロイドを使って １ｍＨのコイルを作るには何回巻けば良いか？ A. 2 turns B. 4 turns C. 43 turns 　　４３巻き。 D. 229 turns E6D14 (A) How many turns will be required to produce a 5-microhenry inductor using a powdered-iron toroidal core that has an inductance index (A L) value of 40 microhenrys/100 turns? インダクタンス指数が４０μＨ／１００巻きのパウダー鉄トロイドを使って ５μＨのコイルを作るには何回巻けば良いか？ A. 35 turns B. 13 turns C. 79 turns D. 141 turns E6D15 (D) What type of CRT deflection is better when high-frequency waves are to be displayed on the screen? 高周波の波をスクリーンに表示させるために望ましいＣＲＴ屈曲方法は？ A. Electromagnetic B. Tubular C. Radar D. Electrostatic 　　静電。 E6D16 (C) Which is NOT true of a charge-coupled device (CCD)? ＣＣＤに関して正しくない事は？ A. It uses a combination of analog and digital circuitry B. It can be used to make an audio delay line C. It can be used as an analog-to-digital converter 　　アナログ−デジタル変換機として使用可能。 D. It samples and stores analog signals E6D17 (A) What is the principle advantage of liquid-crystal display (LCD) devices? ＬＣＤ機器の主要な利点は？ A. They consume low power 　　消費電力が小さい。 B. They can display changes instantly C. They are visible in all light conditions D. They can be easily interchanged with other display devices E6D18 (C) What is one important reason for using ferrite toroids rather than powdered-iron toroids in an inductor? コイルにパウダー鉄トロイドではなくフェライトトロイドを使う重要な理由は？ A. Ferrite toroids generally have lower initial permeabilities B. Ferrite toroids generally have better temperature stability C. Ferrite toroids generally require fewer turns to produce a given inductance value 　　フェライトトロイドは一般的に少ない巻き数で同じインダクタンスを発生する。 D. Ferrite toroids are easier to use with surface mount technology E6E Quartz crystal (frequency determining properties as used in oscillators and filters); monolithic amplifiers (MMICs) E6E01 (B) For single-sideband phone emissions, what would be the bandwidth of a good crystal lattice band-pass filter? ＳＳＢ音声送信用、結晶格子バンドパスフィルターの帯域幅は？ A. 6 kHz at -6 dB B. 2.1 kHz at -6 dB C. 500 Hz at -6 dB D. 15 kHz at -6 dB E6E02 (C) For double-sideband phone emissions, what would be the bandwidth of a good crystal lattice band-pass filter? ＤＳＢ音声送信用、結晶格子バンドパスフィルターの帯域幅は？ A. 1 kHz at -6 dB B. 500 Hz at -6 dB C. 6 kHz at -6 dB D. 15 kHz at -6 dB E6E03 (D) What is a crystal lattice filter? 結晶格子フィルターとは？ A. A power supply filter made with interlaced quartz crystals B. An audio filter made with four quartz crystals that resonate at 1-kHz intervals C. A filter with wide bandwidth and shallow skirts made using quartz crystals D. A filter with narrow bandwidth and steep skirts made using quartz crystals 　　水晶の結晶で作られた帯域幅の狭い、裾の急峻なフィルター。 E6E04 (D) What technique is used to construct low-cost, high-performance crystal ladder filters? 低価格、高性能な結晶梯子フィルターを作る要領は？ A. Obtain a small quantity of custom-made crystals B. Choose a crystal with the desired bandwidth and operating frequency to match a desired center frequency C. Measure crystal bandwidth to ensure at least 20% coupling D. Measure crystal frequencies and carefully select units with a frequency variation of less than 10% of the desired filter bandwidth 　　結晶周波数を測って、周波数分散が欲しいフィルター帯域幅の１０％以内の 　　ユニットを選ぶ。 E6E05 (A) Which of the following factors has the greatest effect in helping determine the bandwidth and response shape of a crystal ladder filter? 結晶梯子フィルターの帯域幅と反応形を決めるのに大きく役に立つ事は？ A. The relative frequencies of the individual crystals 　　個々の結晶の相対周波数。 B. The DC voltage applied to the quartz crystal C. The gain of the RF stage preceding the filter D. The amplitude of the signals passing through the filter E6E06 (A) What is the piezoelectric effect? ピエゾ電子効果とは？ A. Physical deformation of a crystal by the application of a voltage 　　電圧を掛けると結晶が物理的に歪む事。 B. Mechanical deformation of a crystal by the application of a magnetic field C. The generation of electrical energy by the application of light D. Reversed conduction states when a P-N junction is exposed to light E6E07 (A) What is the characteristic impedance of circuits in which MMICs are designed to work? ＭＭＩＣが作動するように設計された回路の特性インピーダンスは？ A. 50 ohms B. 300 ohms C. 450 ohms D. 10 ohms E6E08 (B) What is the typical noise figure of a monolithic microwave integrated circuit (MMIC) amplifier? モノリシックマイクロ波集積回路アンプの一般的な雑音係数は？ A. Less than 1 dB B. Approximately 3.5 to 6 dB 　　おおよそ、３．５〜６ｄＢ。 C. Approximately 8 to 10 dB D. More than 20 dB E6E09 (D) What type of amplifier device consists of a small pill sized package with an input lead, an output lead and 2 ground leads? 入力線、出力線、２つのグランド線の付いた薬の大きさのパッケージで出来たアンプ機器は？ A. A junction field-effect transistor (JFET) B. An operational amplifier integrated circuit (OAIC) C. An indium arsenide integrated circuit (IAIC) D. A monolithic microwave integrated circuit (MMIC) 　　モノリシックマイクロ波集積回路。 E6E10 (B) What typical construction technique do amateurs use when building an amplifier for the microwave bands containing a monolithic microwave integrated circuit (MMIC)? モノリシックマイクロ波集積回路を使ったマイクロ波帯のアンプを作る時、 一般的にアマチュアが使う製作テクニックは？ A. Ground-plane "ugly" construction B. Microstrip construction 　　マイクロストリップ構造。 C. Point-to-point construction D. Wave-soldering construction E6E11 (A) How is the operating bias voltage supplied to a monolithic microwave integrated circuit (MMIC) that uses four leads? ４つの線が付いたモノリシックマイクロ波集積回路へ作動バイアス電圧はどのように供給する？ A. Through a resistor and RF choke connected to the amplifier output lead 　　アンプの出力線に繋がった抵抗とＲＦチョークを通じて。 B. MMICs require no operating bias C. Through a capacitor and RF choke connected to the amplifier input lead D. Directly to the bias-voltage (VCC IN) lead E6E12 (D) How is the DC power from a voltage source fed to a monolithic microwave integrated circuits (MMIC)? 電源からＤＣ電力は、モノリシックマイクロ波集積回路にどのように供給されるか？ A. Through a coupling capacitor B. Through a PIN diode C. Through a silicon-controlled rectifier D. Through a resistor 　　抵抗を通じて。 E6E13 (B) What supply voltage do monolithic microwave integrated circuits (MMIC) amplifiers typically require? モノリシックマイクロ波集積回路アンプが一般に必要とする供給電圧は？ A. 1 volt DC B. 12 volts DC C. 20 volts DC D. 120 volts DC E6E14 (C) What is the most common package for inexpensive monolithic microwave integrated circuit (MMIC) amplifiers? 廉価なモノリシックマイクロ波集積回路アンプの最も一般的なパッケージは？ A. Beryllium oxide packages B. Glass packages C. Plastic packages 　　プラスティックパッケージ。 D. Ceramic packages SUBELEMENT E7 -- PRACTICAL CIRCUITS [7 Exam Questions -- 7 Groups] E7A Digital logic circuits: Flip flops; Astable and monostable multivibrators; Gates (AND, NAND, OR, NOR); Positive and negative logic E7A01 (C) What is a bistable multivibrator circuit? ２極安定多重振動回路とは？ A. An "AND" gate B. An "OR" gate C. A flip-flop 　　フリップフロップ。 D. A clock E7A02 (C) How many output level changes are obtained for every two trigger pulses applied to the input of a "T" flip-flop circuit? Ｔフリップフロップの入力に起動パルスを２つ送る毎に出力レベル変化は幾つ得られるか？ A. None B. One C. Two 　　２つ。 D. Four E7A03 (B) The frequency of an AC signal can be divided electronically by what type of digital circuit? ＡＣ信号の周波数を電気的に分割するのはどのようなデジタル回路によるか？ A. A free-running multivibrator B. A bistable multivibrator 　　２極安定多重振動回路。 C. An OR gate D. An astable multivibrator E7A04 (B) How many flip-flops are required to divide a signal frequency by 4? 信号周波数を４分割するには、フリップフロップが幾つ要るか？ A. 1 B. 2 C. 4 D. 8 E7A05 (D) What is the characteristic function of an astable multivibrator? 非安定多重振動回路の特徴となる機能は？ A. It alternates between two stable states B. It alternates between a stable state and an unstable state C. It blocks either a 0 pulse or a 1 pulse and passes the other D. It alternates between two unstable states 　　安定しない２つの状態を行ったり来たりする。 E7A06 (A) What is the characteristic function of a monostable multivibrator? １極安定多重振動回路の特徴となる機能は？ A. It switches momentarily to the opposite binary state and then returns after a set time to its original state 　　一時的に逆の２進状態に切り替わり、決まった時間の後に元の状態に戻る。 B. It is a clock that produces a continuous square wave oscillating between 1 and 0 C. It stores one bit of data in either a 0 or 1 state D. It maintains a constant output voltage, regardless of variations in the input voltage E7A07 (B) What logical operation does an AND gate perform? ＡＮＤゲートが行う論理動作とは？ A. It produces a logic "0" at its output only if all inputs are logic "1" B. It produces a logic "1" at its output only if all inputs are logic "1" 　　全ての入力が論理値１の時だけ論理値１を出力する。 C. It produces a logic "1" at its output if only one input is a logic "1" D. It produces a logic "1" at its output if all inputs are logic "0" E7A08 (D) What logical operation does a NAND gate perform? ＮＡＮＤゲートが行う論理動作とは？ A. It produces a logic "0" at its output only when all inputs are logic "0" B. It produces a logic "1" at its output only when all inputs are logic "1" C. It produces a logic "0" at its output if some but not all of its inputs are logic "1" D. It produces a logic "0" at its output only when all inputs are logic "1" 　　全ての入力が論理値１の時だけ論理値０を出力する。 E7A09 (A) What logical operation does an OR gate perform? ＯＲゲートが行う論理動作とは？ A. It produces a logic "1" at its output if any input is or all inputs are logic "1" 　　どれかの入力、若しくは、全ての入力が論理値１の時、論理値１を出力する。 B. It produces a logic "0" at its output if all inputs are logic "1" C. It only produces a logic "0" at its output when all inputs are logic "1" D. It produces a logic "1" at its output if all inputs are logic "0" E7A10 (C) What logical operation does a NOR gate perform? ＮＯＲゲートが行う論理動作とは？ A. It produces a logic "0" at its output only if all inputs are logic "0" B. It produces a logic "1" at its output only if all inputs are logic "1" C. It produces a logic "0" at its output if any input is or all inputs are logic "1" 　　どれかの入力、若しくは、全ての入力が論理値１の時、論理値０を出力する。 D. It produces a logic "1" at its output only when none of its inputs are logic "0" E7A11 (C) What is a truth table? 真理値表とは？ A. A table of logic symbols that indicate the high logic states of an op-amp B. A diagram showing logic states when the digital device's output is true C. A list of input combinations and their corresponding outputs that characterize the function of a digital device 　　入力の組合せとそれに対応する出力の表でデジタルデバイスの機能を表す。 D. A table of logic symbols that indicates the low logic states of an op-amp E7A12 (D) In a positive-logic circuit, what level is used to represent a logic 1? 正論理回路で、論理値１を表すレベルは？ A. A low level B. A positive-transition level C. A negative-transition level D. A high level 　　高レベル。 E7A13 (A) In a negative-logic circuit, what level is used to represent a logic 1? 負論理回路で、論理値１を表すレベルは？ A. A low level 　　低レベル。 B. A positive-transition level C. A negative-transition level D. A high level E7B Amplifier circuits: Class A, Class AB, Class B, Class C, amplifier operating efficiency (i.e., DC input versus PEP), transmitter final amplifiers; amplifier circuits: tube, bipolar transistor, FET E7B01 (A) For what portion of a signal cycle does a Class AB amplifier operate? 信号周期のどの部分でＡＢ級アンプは作動するか？ A. More than 180 degrees but less than 360 degrees 　　１８０°以上３６０°未満。 B. Exactly 180 degrees C. The entire cycle D. Less than 180 degrees E7B02 (C) Which class of amplifier provides the highest efficiency? 効率が最も高いアンプの級は？ A. Class A B. Class B C. Class C 　　Ｃ級。 D. Class AB E7B03 (A) Where on the load line should a bipolar-transistor, common-emitter Class A power amplifier be operated for best efficiency and stability? 最も良い効率と安定度でバイポーラートランジスタエミッタ接地Ａ級パワーアンプを 作動させるには負荷線の何処で使うか？ A. Below the saturation region 　　飽和領域より下。 B. Above the saturation region C. At the zero bias point D. Just below the thermal runaway point E7B04 (C) How can parasitic oscillations be eliminated from a power amplifier? パワーアンプから寄生振動を除くには？ A. By tuning for maximum SWR B. By tuning for maximum power output C. By neutralization 　　中和する。 D. By tuning the output E7B05 (B) How can even-order harmonics be reduced or prevented in transmitter amplifiers? 送信機のアンプで偶数高調波を減らすには？ A. By using a push-push amplifier B. By using a push-pull amplifier 　　プッシュプルアンプを使う。 C. By operating Class C D. By operating Class AB E7B06 (D) What can occur when a nonlinear amplifier is used with a single-sideband phone transmitter? 非線形アンプをＳＳＢ音声送信機で使うとどうなるか？ A. Reduced amplifier efficiency B. Increased intelligibility C. Sideband inversion D. Distortion 　　歪む。 E7B07 (C) How can a vacuum-tube power amplifier be neutralized? 真空管パワーアンプを中和するには？ A. By increasing the grid drive B. By feeding back an in-phase component of the output to the input C. By feeding back an out-of-phase component of the output to the input 　　出力の位相のずれた部分を入力へ帰還させる。 D. By feeding back an out-of-phase component of the input to the output E7B08 (D) What is the procedure for tuning a vacuum-tube power amplifier having an output pi-network? 出力π回路の付いた真空管パワーアンプを同調させる手順は？ A. Adjust the loading capacitor to maximum capacitance and then dip the plate current with the tuning capacitor B. Alternately increase the plate current with the tuning capacitor and dip the plate current with the loading capacitor C. Adjust the tuning capacitor to maximum capacitance and then dip the plate current with the loading capacitor D. Alternately increase the plate current with the loading capacitor and dip the plate current with the tuning capacitor 　　負荷コンデンサーでプレート電流を増やし、同調コンデンサーでディップさせる事を 　　交互に行う。 E7B09 (B) In Figure E7-1, what is the purpose of R1 and R2? 図Ｅ７−１で、Ｒ１とＲ２の目的は？ A. Load resistors B. Fixed bias 　　固定バイアス。 C. Self bias D. Feedback E7B10 (D) In Figure E7-1, what is the purpose of C3? 図Ｅ７−１で、Ｃ３の目的は？ A. AC feedback B. Input coupling C. Power supply decoupling D. Emitter bypass 　　エミッタバイアス。 E7B11 (D) In Figure E7-1, what is the purpose of R3? 図Ｅ７−１で、Ｒ３の目的は？ A. Fixed bias B. Emitter bypass C. Output load resistor D. Self bias 　　自己バイアス。 E7B12 (C) What type of circuit is shown in Figure E7-1? 図Ｅ７−１の回路は？ A. Switching voltage regulator B. Linear voltage regulator C. Common emitter amplifier 　　エミッタ接地アンプ。 D. Emitter follower amplifier E7B13 (D) In Figure E7-1, what is the purpose of C1? 図Ｅ７−１で、Ｃ１の目的は？ A. Decoupling B. Output coupling C. Self bias D. Input coupling 　　入力結合。 E7B14 (A) In Figure E7-2, what is the purpose of R? 図Ｅ７−２で、Ｒの目的は？ A. Emitter load 　　エミッタ負荷。 B. Fixed bias C. Collector load D. Voltage regulation E7B15 (A) In Figure E7-2, what is the purpose of C2? 図Ｅ７−２で、Ｃ２の目的は？ A. Output coupling 　　出力結合。 B. Emitter bypass C. Input coupling D. Hum filtering E7B16 (B) What is the purpose of D1 in the circuit shown in Figure E7-3? 図Ｅ７−３の回路で、Ｄ１の目的は？ A. Line voltage stabilization B. Voltage reference 　　電圧参照。 C. Peak clipping D. Hum filtering E7B17 (C) What is the purpose of Q1 in the circuit shown in Figure E7-3? 図Ｅ７−３の回路で、Ｑ１の目的は？ A. It increases the output ripple B. It provides a constant load for the voltage source C. It increases the current-handling capability 　　電流処理能力を増やす。 D. It provides D1 with current E7B18 (A) What is the purpose of C2 in the circuit shown in Figure E7-3? 図Ｅ７−３の回路で、Ｃ２の目的は？ A. It bypasses hum around D1 　　ハムをＤ１の回りでバイパスする。 B. It is a brute force filter for the output C. To self resonate at the hum frequency D. To provide fixed DC bias for Q1 E7B19 (C) What type of circuit is shown in Figure E7-3? 図Ｅ７−３の回路は？ A. Switching voltage regulator B. Grounded emitter amplifier C. Linear voltage regulator 　　リニア電圧レギュレーター。 D. Emitter follower E7B20 (D) What is the purpose of C1 in the circuit shown in Figure E7-3? 図Ｅ７−３の回路で、Ｃ１の目的は？ A. It resonates at the ripple frequency B. It provides fixed bias for Q1 C. It decouples the output D. It filters the supply voltage 　　供給電圧を平滑にする。 E7B21 (A) What is the purpose of C3 in the circuit shown in Figure E7-3? 図Ｅ７−３の回路で、Ｃ３の目的は？ A. It prevents self-oscillation 　　自己振動を防ぐ。 B. It provides brute force filtering of the output C. It provides fixed bias for Q1 D. It clips the peaks of the ripple E7B22 (C) What is the purpose of R1 in the circuit shown in Figure E7-3? 図Ｅ７−３の回路で、Ｒ１の目的は？ A. It provides a constant load to the voltage source B. It couples hum to D1 C. It supplies current to D1 　　Ｄ１へ電流を供給する。 D. It bypasses hum around D1 E7B23 (D) What is the purpose of R2 in the circuit shown in Figure E7-3? 図Ｅ７−３の回路で、Ｒ２の目的は？ A. It provides fixed bias for Q1 B. It provides fixed bias for D1 C. It decouples hum from D1 D. It provides a constant minimum load for Q1 　　Ｑ１に一定の最小負荷を与える。 E7C Impedance-matching networks: Pi, L, Pi-L; filter circuits: constant K, M- derived, band-stop, notch, crystal lattice, pi-section, T-section, L-section, Butterworth, Chebyshev, elliptical; filter applications (audio, IF, digital signal processing {DSP}) E7C01 (D) How are the capacitors and inductors of a low-pass filter pi-network arranged between the network's input and output? 低域フィルターπ回路ののコンデンサーとコイルは回路の入力出力間でどのように 配置されるか？ A. Two inductors are in series between the input and output and a capacitor is connected between the two inductors and ground B. Two capacitors are in series between the input and output and an inductor is connected between the two capacitors and ground C. An inductor is in parallel with the input, another inductor is in parallel with the output, and a capacitor is in series between the two D. A capacitor is in parallel with the input, another capacitor is in parallel with the output, and an inductor is in series between the two 　　入力と並列にコンデンサー１つ、出力と並列にコンデンサー１つ、 　　コイルが両コンデンサーと直列。 E7C02 (B) What is an L-network? Ｌ回路とは？ A. A network consisting entirely of four inductors B. A network consisting of an inductor and a capacitor 　　コイルとコンデンサーから出来た回路。 C. A network used to generate a leading phase angle D. A network used to generate a lagging phase angle E7C03 (C) A T-network with series capacitors and a parallel (shunt) inductor has which of the following properties? 直列コンデンサーと並列（遮断）コイルから出来たＴ回路の特徴は？ A. It transforms impedances and is a low-pass filter B. It transforms reactances and is a low-pass filter C. It transforms impedances and is a high-pass filter 　　インピーダンスを変換する、高域フィルターである。 D. It transforms reactances and is a narrow bandwidth notch filter E7C04 (A) What advantage does a pi-L-network have over a pi-network for impedance matching between the final amplifier of a vacuum-tube type transmitter and a multiband antenna? 真空管式送信機とマルチバンドアンテナ間のインピーダンスマッチングで、 π回路よりπ−Ｌ回路の方が優れているのは？ A. Greater harmonic suppression 　　高調波の抑制が大きい。 B. Higher efficiency C. Lower losses D. Greater transformation range E7C05 (C) How does a network transform one impedance to another? 回路はどのようにインピーダンスを変換するか？ A. It introduces negative resistance to cancel the resistive part of an impedance B. It introduces transconductance to cancel the reactive part of an impedance C. It cancels the reactive part of an impedance and changes the resistive part 　　インピーダンスのリアクタンス部を相殺し、抵抗部を変える。 D. Network resistances substitute for load resistances E7C06 (D) Which filter type is described as having ripple in the passband and a sharp cutoff? 通過帯にリプルが在り、カットオフの鋭いフィルターは？ A. A Butterworth filter B. An active LC filter C. A passive op-amp filter D. A Chebyshev filter 　　チェビシェブフィルター。 E7C07 (C) What are the distinguishing features of an elliptical filter? 楕円フィルターの際立った特長とは？ A. Gradual passband rolloff with minimal stop-band ripple B. Extremely flat response over its passband, with gradually rounded stop-band corners C. Extremely sharp cutoff, with one or more infinitely deep notches in the stop band 　　非常に鋭いカットオフ、ストップ帯で一つ以上の無限に深いノッチ。 D. Gradual passband rolloff with extreme stop-band ripple E7C08 (B) What kind of audio filter would you use to attenuate an interfering carrier signal while receiving an SSB transmission? ＳＳＢ波の受信中に混信する搬送波信号を減衰する為に使う音声フィルターは？ A. A band-pass filter B. A notch filter 　　ノッチフィルター。 C. A pi-network filter D. An all-pass filter E7C09 (D) What characteristic do typical SSB receiver IF filters lack that is important to digital communications? 一般的なＳＳＢ受信機ＩＦフィルターが持たないデジタル通信に重要な特性とは？ A. Steep amplitude-response skirts B. Passband ripple C. High input impedance D. Linear phase response 　　線形位相レスポンス。 E7C10 (A) What kind of digital signal processing audio filter might be used to remove unwanted noise from a received SSB signal? 受信されたＳＳＢ信号から不要な雑音を除く為に使うデジタル信号処理音声フィルターは？ A. An adaptive filter 　　適合フィルター。 B. A crystal-lattice filter C. A Hilbert-transform filter D. A phase-inverting filter E7C11 (C) What kind of digital signal processing filter might be used in generating an SSB signal? ＳＳＢ信号を発生させる為に使われるＤＳＰフィルターは？ A. An adaptive filter B. A notch filter C. A Hilbert-transform filter 　　ヒルバート変換フィルター。 D. An elliptical filter E7C12 (B) Which type of filter would be the best to use in a 2-meter repeater duplexer? ２ｍリピーターのデュプレクサーで使われるのに最も適したフィルターは？ A. A crystal filter B. A cavity filter 　　キャビティーフィルター。 C. A DSP filter D. An L-C filter E7C13 (D) What is a pi-network? π回路とは？ A. A network consisting entirely of four inductors or four capacitors B. A Power Incidence network C. An antenna matching network that is isolated from ground D. A network consisting of one inductor and two capacitors or two inductors and one capacitor 　　１個のコイルと２個のコンデンサー、若しくは、２個のコイルと１個の 　　コンデンサーから出来た回路。 E7C14 (B) What is a pi-L-network? π−Ｌ回路とは？ A. A Phase Inverter Load network B. A network consisting of two inductors and two capacitors 　　２個のコイルと２個のコンデンサーから出来た回路。 C. A network with only three discrete parts D. A matching network in which all components are isolated from ground E7C15 (C) Which type of network provides the greatest harmonic suppression? 高調波の抑制に最も優れた回路は？ A. L-network B. Pi-network C. Pi-L-network 　　π−Ｌ回路。 D. Inverse Pi network E7D Oscillators: types, applications, stability; voltage-regulator circuits: discrete, integrated and switched mode E7D01 (D) What are three major oscillator circuits often used in Amateur Radio equipment? アマチュア無線装置で良く使われる３つの主要な発振回路は？ A. Taft, Pierce and negative feedback B. Colpitts, Hartley and Taft C. Taft, Hartley and Pierce D. Colpitts, Hartley and Pierce 　　コルピッツ、ハートレイ、ピアース。 E7D02 (C) What condition must exist for a circuit to oscillate? 回路が発振する為の条件は？ A. It must have a gain of less than 1 B. It must be neutralized C. It must have positive feedback sufficient to overcome losses 　　損失を補うのに十分なポジティブフィードバック。 D. It must have negative feedback sufficient to cancel the input E7D03 (A) How is the positive feedback coupled to the input in a Hartley oscillator? ハートレイ発信機の入力にポジティブフィードバックはどのように結合されるか？ A. Through a tapped coil 　　コイルのタップ部から。 B. Through a capacitive divider C. Through link coupling D. Through a neutralizing capacitor E7D04 (C) How is the positive feedback coupled to the input in a Colpitts oscillator? コルピッツ発信機の入力にポジティブフィードバックはどのように結合されるか？ A. Through a tapped coil B. Through link coupling C. Through a capacitive divider 　　コンデンサー分割点から。 D. Through a neutralizing capacitor E7D05 (D) How is the positive feedback coupled to the input in a Pierce oscillator? ピアース発信機の入力にポジティブフィードバックはどのように結合されるか？ A. Through a tapped coil B. Through link coupling C. Through a neutralizing capacitor D. Through a quartz crystal 　　水晶の結晶から。 E7D06 (B) Which type of oscillator circuits are commonly used in a VFO? ＶＦＯで一般的に使われる発振回路は？ A. Pierce and Zener B. Colpitts and Hartley 　　コルピッツとハートレイ。 C. Armstrong and deForest D. Negative feedback and Balanced feedback E7D07 (B) Why is very stable reference oscillator normally used as part of a phase-locked loop (PLL) frequency synthesizer? 位相同期ループの周波数合成器の一部として非常に安定した参照発振器が使われる訳は？ A. Any amplitude variations in the reference oscillator signal will prevent the loop from locking to the desired signal B. Any phase variations in the reference oscillator signal will produce phase noise in the synthesizer output 　　参照発振器信号の位相変動は合成器出力に位相雑音を発生するから。 C. Any phase variations in the reference oscillator signal will produce harmonic distortion in the modulating signal D. Any amplitude variations in the reference oscillator signal will prevent the loop from changing frequency E7D08 (D) What is one characteristic of a linear electronic voltage regulator? 線形電子式電圧レギュレーターの特徴は？ A. It has a ramp voltage as its output B. The pass transistor switches from the "off" state to the "on" state C. The control device is switched on or off, with the duty cycle proportional to the line or load conditions D. The conduction of a control element is varied in direct proportion to the load current to maintain a constant output voltage 　　負荷電流に比例して制御エレメントの電導を変化させて出力電圧を一定に保つ。 E7D09 (C) What is one characteristic of a switching electronic voltage regulator? 切換え電子式電圧レギュレーターの特徴は？ A. The conduction of a control element is varied in direct proportion to the line voltage or load current B. It provides more than one output voltage C. The control device is switched on or off, with the duty cycle automatically adjusted to maintain a constant average output voltage 　　制御デバイスのスイッチを入れたり切ったりして、デューティーサイクルを自動的に 　　調節して平均出力電圧を一定に保つ。 D. It gives a ramp voltage at its output E7D10 (A) What device is typically used as a stable reference voltage in a linear voltage regulator? リニア電圧レギュレーターの安定した参照電圧として一般的に使われる機器は？ A. A Zener diode 　　ツェナーダイオード。 B. A tunnel diode C. An SCR D. A varactor diode E7D11 (B) What type of linear regulator is used in applications requiring efficient use of the primary power source? １次側電源を効率的に使う必要の在る応用機器に使われるリニアレギュレータは？ A. A constant current source B. A series regulator 　　直列レギュレーター。 C. A shunt regulator D. A shunt current source E7D12 (D) What type of linear voltage regulator is used in applications requiring a constant load on the unregulated voltage source? 制御されていない電源に一定の負荷を必要とする応用機器に使われるリニア電圧レギュレータは？ A. A constant current source B. A series regulator C. A shunt current source D. A shunt regulator 　　遮断レギュレータ。 E7D13 (C) Which of the following Zener diodes voltages will result in the best temperature stability for a voltage reference? 電圧参照として温度安定性の最も良くなるツェナーダイオード電圧は？ A. 2.4 volts B. 3.0 volts C. 5.6 volts D. 12.0 volts E7D14 (B) What are the important characteristics of a three-terminal regulator? ３端子レギュレータの重要な特性は？ A. Maximum and minimum input voltage, minimum output current and voltage B. Maximum and minimum input voltage, maximum and minimum output current and maximum output voltage 　　最大、及び、最小入力電圧、最大、及び、最小出力電流と最大出力電圧。 C. Maximum and minimum input voltage, minimum output current and maximum output voltage D. Maximum and minimum input voltage, minimum output voltage and Maximum input and output current E7D15 (A) What type of voltage regulator limits the voltage drop across its junction when a specified current passes through it in the reverse-breakdown direction? 逆の破壊方向に一定の電流が流れたら、ジャンクション間の電圧低下を制限する 電圧レギュレーターは？ A. A Zener diode 　　ツェナーダイオード。 B. A three-terminal regulator C. A bipolar regulator D. A pass-transistor regulator E7E Modulators: reactance, phase, balanced; detectors; mixer stages; frequency synthesizers E7E01 (B) How is an F3E FM-phone emission produced? Ｆ３ＥのＦＭ音声波はどのように作られるか？ A. With a balanced modulator on the audio amplifier B. With a reactance modulator on the oscillator 　　発振器にリアクタンス変調を掛ける。 C. With a reactance modulator on the final amplifier D. With a balanced modulator on the oscillator E7E02 (C) How does a reactance modulator work? リアクタンス変調器の作動は？ A. It acts as a variable resistance or capacitance to produce FM signals B. It acts as a variable resistance or capacitance to produce AM signals C. It acts as a variable inductance or capacitance to produce FM signals 　　可変コンデンサーやコイルとして作動しＦＭ信号を発生する。 D. It acts as a variable inductance or capacitance to produce AM signals E7E03 (C) How does a phase modulator work? 位相変調器の作動は？ A. It varies the tuning of a microphone preamplifier to produce PM signals B. It varies the tuning of an amplifier tank circuit to produce AM signals C. It varies the tuning of an amplifier tank circuit to produce PM signals 　　アンプのタンク回路の同調を変化させてＰＭ信号を発生させる。 D. It varies the tuning of a microphone preamplifier to produce AM signals E7E04 (A) How can a single-sideband phone signal be generated? ＳＳＢ音声信号はどのように作られるか？ A. By using a balanced modulator followed by a filter 　　平衡変調器をフィルターに繋いで。 B. By using a reactance modulator followed by a mixer C. By using a loop modulator followed by a mixer D. By driving a product detector with a DSB signal E7E05 (D) What audio shaping network is added at a transmitter to proportionally attenuate the lower audio frequencies, giving an even spread to the energy in the audio band? 送信機に付加されて、低音声周波数を比例して減衰させ音声帯域にエネルギーを均一に 分散させる音声成型回路は？ A. A de-emphasis network B. A heterodyne suppressor C. An audio prescaler D. A pre-emphasis network 　　プリエンファシス回路。 E7E06 (A) What audio shaping network is added at a receiver to restore proportionally attenuated lower audio frequencies? 受信機に付加されて、比例して減衰された低音声周波数を復元する音声成型回路は？ A. A de-emphasis network 　　ディエンファシス回路。 B. A heterodyne suppressor C. An audio prescaler D. A pre-emphasis network E7E07 (D) What is the mixing process? 混合とは？ A. The elimination of noise in a wideband receiver by phase comparison B. The elimination of noise in a wideband receiver by phase differentiation C. The recovery of the intelligence from a modulated RF signal D. The combination of two signals to produce sum and difference frequencies 　　２つの信号を組合わせて、和と差の周波数を発生させる事。 E7E08 (C) What are the principal frequencies that appear at the output of a mixer circuit? 混合回路の出力に現れる主要な周波数は？ A. Two and four times the original frequency B. The sum, difference and square root of the input frequencies C. The original frequencies and the sum and difference frequencies 　　元の周波数、和と差の周波数。 D. 1.414 and 0.707 times the input frequency E7E09 (A) What occurs in a receiver when an excessive amount of signal energy reaches the mixer circuit? 過剰な信号エネルギーが混合回路に達すると受信機に発生する事は？ A. Spurious mixer products are generated 　　スプリアス混合出力が発生する。 B. Mixer blanking occurs C. Automatic limiting occurs D. A beat frequency is generated E7E10 (C) What type of frequency synthesizer circuit uses a stable voltage-controlled oscillator, programmable divider, phase detector, loop filter and a reference frequency source? 安定な電圧制御発振器、プログラマブル分割器、位相検波器、ループフィルターと 参照周波数源を使う周波数合成回路は？ A. A direct digital synthesizer B. A hybrid synthesizer C. A phase-locked loop synthesizer 　　位相同期ループ合成器。 D. A diode-switching matrix synthesizer E7E11 (A) What type of frequency synthesizer circuit uses a phase accumulator, lookup table, digital to analog converter and a low-pass antialias filter? 位相蓄積器、早見表、デジタル・アナログ変換器と低域アンチエイリアスフィルターを 使う周波数合成回路は？ A. A direct digital synthesizer 　　直動デジタル合成器。 B. A hybrid synthesizer C. A phase-locked loop synthesizer D. A diode-switching matrix synthesizer E7E12 (D) What are the main blocks of a direct digital frequency synthesizer? 直動デジタル周波数合成器の主なブロックは？ A. A variable-frequency crystal oscillator, phase accumulator, digital to analog converter and a loop filter B. A stable voltage-controlled oscillator, programmable divider, phase detector, loop filter and a digital to analog converter C. A variable-frequency oscillator, programmable divider, phase detector and a low-pass antialias filter D. A phase accumulator, lookup table, digital to analog converter and a low- pass antialias filter 　　位相蓄積器、早見表、デジタル・アナログ変換器と低域アンチエイリアスフィルター。 E7E13 (B) What information is contained in the lookup table of a direct digital frequency synthesizer? 直動デジタル周波数合成器の早見表に入っている情報は？ A. The phase relationship between a reference oscillator and the output waveform B. The amplitude values that represent a sine-wave output 　　正弦波出力を表す振幅値。 C. The phase relationship between a voltage-controlled oscillator and the output waveform D. The synthesizer frequency limits and frequency values stored in the radio memories E7E14 (C) What are the major spectral impurity components of direct digital synthesizers? 直動デジタル合成器の主要なスペクトル不純は？ A. Broadband noise B. Digital conversion noise C. Spurs at discrete frequencies 　　不連続な周波数でのスパイク。 D. Nyquist limit noise E7E15 (A) What are the major spectral impurity components of phase-locked loop synthesizers? 位相同期ループ合成器の主要なスペクトル不純は？ A. Broadband noise 　　広帯域雑音。 B. Digital conversion noise C. Spurs at discrete frequencies D. Nyquist limit noise E7E16 (B) What is the process of detection? 検波とは？ A. The masking of the intelligence on a received carrier B. The recovery of the intelligence from a modulated RF signal 　　変調されたＲＦ信号から情報を回収する事。 C. The modulation of a carrier D. The mixing of noise with a received signal E7E17 (A) What is the principle of detection in a diode detector? ダイオード検波器の検波原理は？ A. Rectification and filtering of RF 　　ＲＦの整流と平滑。 B. Breakdown of the Zener voltage C. Mixing with noise in the transition region of the diode D. The change of reactance in the diode with respect to frequency E7E18 (C) What does a product detector do? 積検波器は何をするか？ A. It provides local oscillations for input to a mixer B. It amplifies and narrows bandpass frequencies C. It mixes an incoming signal with a locally generated carrier 　　入感信号と局部で発生された搬送波を混合する。 D. It detects cross-modulation products E7E19 (B) How are FM-phone signals detected? ＦＭ音声信号はどのように検波されるか？ A. With a balanced modulator B. With a frequency discriminator 　　周波数弁別器で。 C. With a product detector D. With a phase splitter E7E20 (D) What is a frequency discriminator? 周波数弁別器とは？ A. An FM generator B. A circuit for filtering two closely adjacent signals C. An automatic band-switching circuit D. A circuit for detecting FM signals 　　ＦＭ信号を検波する回路。 E7E21 (C) How can an FM-phone signal be produced? ＦＭ音声信号の作り方は？ A. By modulating the supply voltage to a Class-B amplifier B. By modulating the supply voltage to a Class-C amplifier C. By using a reactance modulator on an oscillator 　　発振器にリアクタンス変調を掛ける。　　 D. By using a balanced modulator on an oscillator E7F Digital frequency divider circuits; frequency marker generators; frequency counters E7F01 (D) What is the purpose of a prescaler circuit? プリスケーラー回路の目的は？ A. It converts the output of a JK flip-flop to that of an RS flip-flop B. It multiplies an HF signal so a low-frequency counter can display the operating frequency C. It prevents oscillation in a low-frequency counter circuit D. It divides an HF signal so a low-frequency counter can display the operating frequency 　　ＨＦ信号を分割して、低周波カウンターが運用周波数を表示出来るようにする。 E7F02 (B) How many states does a decade counter digital IC have? １０進カウンターデジタルＩＣには幾つの状態が在るか？ A. 2 B. 10 C. 20 D. 100 E7F03 (A) What is the function of a decade counter digital IC? １０進カウンターデジタルＩＣの機能は？ A. It produces one output pulse for every ten input pulses 　　入力パルス１０毎に出力パルスを１つ出す。 B. It decodes a decimal number for display on a seven-segment LED display C. It produces ten output pulses for every input pulse D. It adds two decimal numbers E7F04 (C) What additional circuitry is required in a 100-kHz crystal-controlled marker generator to provide markers at 50 and 25 kHz? １００ＫＨｚ結晶制御マーカージェネレーターで５０と２５ＭＨｚのマーカーを 作るにはどんな付加回路が必要か？ A. An emitter-follower B. Two frequency multipliers C. Two flip-flops 　　フリップフロップ２個。 D. A voltage divider E7F05 (B) If a 1-MHz oscillator is used with a divide-by-ten circuit to make a marker generator, what will the output be? １ＭＨｚ発振器と１０分割回路でマーカージェネレーターを作ると出力は？ A. A 1-MHz sinusoidal signal with harmonics every 100 kHz B. A 100-kHz signal with harmonics every 100 kHz 　　１００ＫＨｚ信号とその１００ＫＨｚ毎の高調波。 C. A 1-MHz square wave with harmonics every 1 MHz D. A 100-kHz signal modulated by a 10-kHz signal E7F06 (D) What is a crystal-controlled marker generator? 結晶制御マーカージェネレーターとは？ A. A low-stability oscillator that sweeps through a band of frequencies B. An oscillator often used in aircraft to determine the craft's location relative to the inner and outer markers at airports C. A high-stability oscillator whose output frequency and amplitude can be varied over a wide range D. A high-stability oscillator that generates a series of reference signals at known frequency intervals 　　決まった周波数間隔で一連の参照信号を発生する高安定発振器。 E7F07 (A) What type of circuit does NOT make a good marker generator? 良いマーカージェネレーターにならない回路は？ A. A sinusoidal crystal oscillator 　　三角関数波結晶発振器。 B. A crystal oscillator followed by a class C amplifier C. A TTL device wired as a crystal oscillator D. A crystal oscillator and a frequency divider E7F08 (C) What is the purpose of a marker generator? マーカージェネレーターの目的は？ A. To add audio markers to an oscilloscope B. To provide a frequency reference for a phase locked loop C. To provide a means of calibrating a receiver's frequency settings 　　受信機の周波数セッティングを正しく目盛る手段となる。 D. To add time signals to a transmitted signal E7F09 (A) What does the accuracy of a frequency counter depend on? 周波数カウンターの精度は何によるか？ A. The internal crystal reference 　　内部結晶参照。 B. A voltage-regulated power supply with an unvarying output C. Accuracy of the AC input frequency to the power supply D. Proper balancing of the power-supply diodes E7F10 (C) How does a frequency counter determine the frequency of a signal? 周波数カウンターは信号の周波数をどのように決めるか？ A. It counts the total number of pulses in a circuit B. It monitors a WWV reference signal for comparison with the measured signal C. It counts the number of input pulses in a specific period of time 　　決められた時間内の入力パルスの数を数える。 D. It converts the phase of the measured signal to a voltage which is proportional to the frequency E7F11 (A) What is the purpose of a frequency counter? 周波数カウンターの目的は？ A. To indicate the frequency of the strongest input signal which is within the counter's frequency range 　　カウンターの周波数範囲内で最も強力な信号の周波数を表示する。 B. To generate a series of reference signals at known frequency intervals C. To display all frequency components of a transmitted signal D. To compare the difference between the input and a voltage-controlled oscillator and produce an error voltage E7G Active audio filters: characteristics; basic circuit design; preselector applications E7G01 (B) What determines the gain and frequency characteristics of an op-amp RC active filter? オペアンプＲＣアクティブフィルターのゲインと周波数特性を決めるのは？ A. The values of capacitances and resistances built into the op-amp B. The values of capacitances and resistances external to the op-amp 　　オペアンプの外部のキャパシタンスと抵抗の値。 C. The input voltage and frequency of the op-amp's DC power supply D. The output voltage and smoothness of the op-amp's DC power supply E7G02 (C) What causes ringing in a filter? フィルターのリンギングの原因は？ A. The slew rate of the filter B. The bandwidth of the filter C. The filter shape, as measured in the frequency domain 　　周波数ドメインで測定されたフィルター形状。 D. The gain of the filter E7G03 (D) What are the advantages of using an op-amp instead of LC elements in an audio filter? 音声フィルターにＬＣエレメントではなくオペアンプを使う利点は？ A. Op-amps are more rugged and can withstand more abuse than can LC elements B. Op-amps are fixed at one frequency C. Op-amps are available in more varieties than are LC elements D. Op-amps exhibit gain rather than insertion loss 　　オペアンプは、挿入損失よりもゲインとなる。 E7G04 (C) What type of capacitors should be used in a high-stability op-amp RC active filter circuit? 高安定オペアンプＲＣアクティブフィルター回路に使われるコンデンサーは？ A. Electrolytic B. Disc ceramic C. Polystyrene 　　ポリスティレン。 D. Paper dielectric E7G05 (A) How can unwanted ringing and audio instability be prevented in a multisection op-amp RC audio filter circuit? マルチセクションオペアンプＲＣ音声フィルター回路で不要なリンギングや音声不安定を防ぐには？ A. Restrict both gain and Q 　　ゲインとＱの両方を制限する。 B. Restrict gain, but increase Q C. Restrict Q, but increase gain D. Increase both gain and Q E7G06 (A) What parameter must be selected when selecting the resistor and capacitor values for an RC active filter using an op-amp? オペアンプを使ったＲＣアクティブフィルターの抵抗とコンデンサーを選ぶ時、パラメーターは？ A. Filter bandwidth 　　フィルター帯域幅。 B. Desired current gain C. Temperature coefficient D. Output-offset overshoot E7G07 (B) The design of a preselector involves a trade-off between bandwidth and what other factor? プリセレクターの設計で、帯域幅と妥協しなければならないファクターは？ A. The amount of ringing B. Insertion loss 　　挿入損失。 C. The number of parts D. The choice of capacitors or inductors E7G08 (A) When designing an op-amp RC active filter for a given frequency range and Q, what steps are typically followed when selecting the external components? 与えられた周波数範囲とＱに対してオペアンプＲＣアクティブフィルターを設計する時、 外部コンポーネントの選定で一般的に取る手順は？ A. Standard capacitor values are chosen first, the resistances are calculated, then resistors of the nearest standard value are used 　　まず、標準コンデンサー値を選び、抵抗値を計算し、それに最も近い標準値の抵抗 　　を用いる。 B. Standard resistor values are chosen first, the capacitances are calculated, then capacitors of the nearest standard value are used C. Standard resistor and capacitor values are used, the circuit is tested, then additional resistors are added to make any adjustments D. Standard resistor and capacitor values are used, the circuit is tested, then additional capacitors are added to make any adjustments E7G09 (C) When designing an op-amp RC active filter for a given frequency range and Q, why are the external capacitance values usually chosen first, then the external resistance values calculated? 与えられた周波数範囲とＱに対してオペアンプＲＣアクティブフィルターを設計する時、 まず、外部コンデンサー値を決めて、それから外部抵抗値を計算する訳は？ A. An op-amp will perform as an active filter using only standard external capacitance values B. The calculations are easier to make with known capacitance values rather than with known resistance values C. Capacitors with unusual capacitance values are not widely available, so standard values are used to begin the calculations 　　標準でない値のコンデンサーは手に入り難いので、標準値を使って計算を始める。 D. The equations for the calculations can only be used with known capacitance values E7G10 (D) What are the principal uses of an op-amp RC active filter in amateur circuitry? アマチュア用回路でオペアンプＲＣアクティブフィルターの主要な使い道は？ A. High-pass filters used to block RFI at the input to receivers B. Low-pass filters used between transmitters and transmission lines C. Filters used for smoothing power-supply output D. Audio filters used for receivers 　　受信機用音声フィルター。 E7G11 (D) Where should an op-amp RC active audio filter be placed in an amateur receiver? アマチュア用受信機でオペアンプＲＣアクティブ音声フィルターは、何処に置かれるか？ A. In the IF strip, immediately before the detector B. In the audio circuitry immediately before the speaker or phone jack C. Between the balanced modulator and frequency multiplier D. In the low-level audio stages 　　低レベル音声段。 SUBELEMENT E8 - SIGNALS AND EMISSIONS [4 Exam Questions -- 4 Groups] E8A AC waveforms: sine wave, square wave, sawtooth wave; AC measurements: peak, peak-to-peak and root-mean-square (RMS) value, peak-envelope-power (PEP) relative to average E8A01 (C) Starting at a positive peak, how many times does a sine wave cross the zero axis in one complete cycle? プラス側のピークから正弦波は、１周期で何回０軸と交差するか？ A. 180 times B. 4 times C. 2 times 　　２回。 D. 360 times E8A02 (C) What is a wave called that abruptly changes back and forth between two voltage levels and remains an equal time at each level? ２つの電圧レベルの間を交互に変化し、それぞれのレベルに同じ時間留まる波の事を何と呼ぶか？ A. A sine wave B. A cosine wave C. A square wave 　　正方波。 D. A sawtooth wave E8A03 (D) What sine waves added to a fundamental frequency make up a square wave? 基本周波数にどの正弦波が加われば正方波になるか？ A. A sine wave 0.707 times the fundamental frequency B. All odd and even harmonics C. All even harmonics D. All odd harmonics 　　全奇数高調波。 E8A04 (A) What type of wave is made up of a sine wave of a fundamental frequency and all its odd harmonics? 基本周波数の正弦波と全ての奇数高調波から出来ている波は？ A. A square wave 　　正方波。 B. A sine wave C. A cosine wave D. A tangent wave E8A05 (B) What is a sawtooth wave? 鋸波とは？ A. A wave that alternates between two values and spends an equal time at each level B. A wave with a straight line rise time faster than the fall time (or vice versa) 　　直線の上昇時間が下降時間より早い（若しくは、その逆）波。 C. A wave that produces a phase angle tangent to the unit circle D. A wave whose amplitude at any given instant can be represented by a point on a wheel rotating at a uniform speed E8A06 (C) What type of wave has a rise time significantly faster than the fall time (or vice versa)? 上昇時間が下降時間より非常に早い（若しくは、その逆）波は？ A. A cosine wave B. A square wave C. A sawtooth wave 　　鋸波。 D. A sine wave E8A07 (A) What type of wave is made up of sine waves of a fundamental frequency and all harmonics? 基本周波数の正弦波とその全高調波から出来ている波は？ A. A sawtooth wave 　　鋸波。 B. A square wave C. A sine wave D. A cosine wave E8A08 (B) What is the peak voltage at a common household electrical outlet? 一般家庭電源のピーク電圧は？ A. 240 volts B. 170 volts 　　１７０Ｖ。 C. 120 volts D. 340 volts E8A09 (C) What is the peak-to-peak voltage at a common household electrical outlet? 一般家庭電源のピーク間電圧は？ A. 240 volts B. 120 volts C. 340 volts 　　３４０Ｖ。 D. 170 volts E8A10 (A) What is the RMS voltage at a common household electrical power outlet? 一般家庭電源のＲＭＳ電圧は？ A. 120-V AC 　　１２０ＶＡＣ。 B. 340-V AC C. 85-V AC D. 170-V AC E8A11 (A) What is the RMS value of a 340-volt peak-to-peak pure sine wave? ピーク間３４０Ｖ純正正弦波のＲＭＳ値は？ A. 120-V AC 　　１２０ＶＡＣ。 B. 170-V AC C. 240-V AC D. 300-V AC E8A12 (C) What is the equivalent to the root-mean-square value of an AC voltage? ＡＣ電圧のＲＭＳ値と等価なものは？ A. The AC voltage found by taking the square of the average value of the peak AC voltage B. The DC voltage causing the same heating in a given resistor as the peak AC voltage C. The DC voltage causing the same heating in a given resistor as the RMS AC voltage of the same value 　　任意の抵抗に同じ発熱を起こすＤＣ電圧をＡＣのＲＭＳ電圧とする。 D. The AC voltage found by taking the square root of the average AC value E8A13 (D) What would be the most accurate way of measuring the RMS voltage of a complex waveform? 複雑な波形のＲＭＳ電圧を最も正確に測る方法は？ A. By using a grid dip meter B. By measuring the voltage with a D'Arsonval meter C. By using an absorption wavemeter D. By measuring the heating effect in a known resistor 　　既知の抵抗の発熱を測る。 E8A14 (A) For many types of voices, what is the approximate ratio of PEP to average power during a modulation peak in a single-sideband phone signal? ＳＳＢ音声信号で変調のピーク時、ＰＥＰと平均出力の大まかな比は？ A. 2.5 to 1 B. 25 to 1 C. 1 to 1 D. 100 to 1 E8A15 (B) In a single-sideband phone signal, what determines the PEP-to-average power ratio? ＳＳＢ音声信号で、ＰＥＰ・平均出力比を決めるものは？ A. The frequency of the modulating signal B. The speech characteristics 　　音声の性質。 C. The degree of carrier suppression D. The amplifier power E8A16 (C) What is the approximate DC input power to a Class B RF power amplifier stage in an FM-phone transmitter when the PEP output power is 1500 watts? ＰＥＰ出力が１５００Ｗの時、ＦＭ音声送信機のＢ級ＲＦパワーアンプ段へ入力するＤＣ電力は？ A. 900 watts B. 1765 watts C. 2500 watts D. 4500 watts E8A17 (C) What is the approximate DC input power to a Class AB RF power amplifier stage in an unmodulated carrier transmitter when the PEP output power is 500 watts? ＰＥＰ出力が５００Ｗの時、無変調搬送波送信機のＡＢ級ＲＦパワーアンプ段へ入力するＤＣ電力は？ A. 250 watts B. 600 watts C. 1000 watts D. 1500 watts E8A18 (A) What is the period of a wave? 波の周期とは？ A. The time required to complete one cycle 　　１サイクルに掛かる時間。 B. The number of degrees in one cycle C. The number of zero crossings in one cycle D. The amplitude of the wave E8B FCC emission designators versus emission types; modulation symbols and transmission characteristics; modulation methods; modulation index; deviation ratio; pulse modulation: width; position E8B01 (A) What is emission A3C? Ａ３Ｃ波とは？ A. Facsimile 　　ファクシミリ。 B. RTTY C. ATV D. Slow Scan TV E8B02 (B) What type of emission is produced when an AM transmitter is modulated by a facsimile signal? ＡＭ送信機がファクシミリ信号で変調されたらどんな波が出来るか？ A. A3F B. A3C C. F3F D. F3C E8B03 (C) What does a facsimile transmission produce? ファクシミリ送信が送るものは？ A. Tone-modulated telegraphy B. A pattern of printed characters designed to form a picture C. Printed pictures by electrical means 　　電子的に印刷された画像。 D. Moving pictures by electrical means E8B04 (D) What is emission F3F? Ｆ３Ｆ波とは？ A. Modulated CW B. Facsimile C. RTTY D. Television 　　テレビ。 E8B05 (D) What type of emission is produced when an SSB transmitter is modulated by a slow-scan television signal? ＳＳＢ送信機がＳＳＴＶ信号で変調されたらどんな波が出来るか？ A. J3A B. F3F C. A3F D. J3F E8B06 (B) If the first symbol of an ITU emission designator is J, representing a single- sideband, suppressed-carrier signal, what information about the emission is described? ＩＴＵ電波名称の最初の文字がＳＳＢ抑圧搬送波信号を表すＪである時、電波の何の 情報を表すか？ A. The nature of any signal multiplexing B. The type of modulation of the main carrier 　　主搬送波の変調タイプ。 C. The maximum permissible bandwidth D. The maximum signal level, in decibels E8B07 (C) If the second symbol of an ITU emission designator is 1, representing a single channel containing quantized, or digital information, what information about the emission is described? ＩＴＵ電波名称の２番目の文字が量子化された、若しくは、デジタル情報を入れた 単一チャンネルを表す１である時、電波の何の情報を表すか？ A. The maximum transmission rate, in bauds B. The maximum permissible deviation C. The nature of signals modulating the main carrier 　　主搬送波を変調している信号の性質。 D. The type of information to be transmitted E8B08 (D) If the third symbol of an ITU emission designator is D, representing data transmission, telemetry or telecommand, what information about the emission is described? ＩＴＵ電波名称の３番目の文字がデータ送信、遠隔測定、若しくは、遠隔操作を表す Ｄである時、電波の何の情報を表すか？ A. The maximum transmission rate, in bauds B. The maximum permissible deviation C. The nature of signals modulating the main carrier D. The type of information to be transmitted 　　送信される情報の種類。 E8B10 (D) How does the modulation index of a phase-modulated emission vary with RF carrier frequency (the modulated frequency)? 位相変調波の変調指数は、ＲＦ搬送波周波数（変調される周波数）によってどう変わるか？ A. It increases as the RF carrier frequency increases B. It decreases as the RF carrier frequency increases C. It varies with the square root of the RF carrier frequency D. It does not depend on the RF carrier frequency 　　ＲＦ搬送波周波数に無関係。 E8B11 (A) In an FM-phone signal having a maximum frequency deviation of 3000 Hz either side of the carrier frequency, what is the modulation index when the modulating frequency is 1000 Hz? 最大周波数偏移が搬送波周波数の両側３０００ＨｚのＦＭ音声信号で、変調周波数が １０００Ｈｚの時の変調指数は？ A. 3 B. 0.3 C. 3000 D. 1000 E8B12 (B) What is the modulation index of an FM-phone transmitter producing a maximum carrier deviation of 6 kHz when modulated with a 2-kHz modulating frequency? ２ＫＨｚの変調周波数で変調された時、最大搬送波偏移が６ＫＨｚになるＦＭ音声送信機の 変調指数は？ A. 6000 B. 3 C. 2000 D. 1/3 E8B13 (D) What is the deviation ratio of an FM-phone signal having a maximum frequency swing of plus or minus 5 kHz and accepting a maximum modulation rate of 3 kHz? 最大周波数振幅が±５ＫＨｚで最大変調率３ＫＨｚを受容するＦＭ音声信号の偏移率は？ A. 60 B. 0.167 C. 0.6 D. 1.67 E8B14 (A) In a pulse width-modulation system, why is the transmitter's peak power much greater than its average power? パルス幅変調方式で、送信機のピーク出力が平均出力よりとても大きい訳は？ A. The signal duty cycle is less than 100% 　　信号のデューティーサイクルが１００％以下だから。 B. The signal reaches peak amplitude only when voice modulated C. The signal reaches peak amplitude only when voltage spikes are generated within the modulator D. The signal reaches peak amplitude only when the pulses are also amplitude modulated E8B15 (C) What is one way that voice is transmitted in a pulse-width modulation system? 音声をパルス幅変調方式で送信する１つの方法は？ A. A standard pulse is varied in amplitude by an amount depending on the voice waveform at that instant B. The position of a standard pulse is varied by an amount depending on the voice waveform at that instant C. A standard pulse is varied in duration by an amount depending on the voice waveform at that instant 　　その瞬間の音声波形に応じた量だけ標準パルスの時間を変える。 D. The number of standard pulses per second varies depending on the voice waveform at that instant E8B17 (C) Which of the following describe the three most-used symbols of an ITU emission designator? ＩＴＵ電波名称の３つの文字が表すものは？ A. Type of modulation, transmitted bandwidth and modulation code designator B. Bandwidth of the modulating signal, nature of the modulating signal and transmission rate of signals C. Type of modulation, nature of the modulating signal and type of information to be transmitted 　　変調方式、変調信号の性質、送信される情報のタイプ。 D. Power of signal being transmitted, nature of multiplexing and transmission speed E8B18 (D) If the first symbol of an ITU emission designator is G, representing a phase- modulated signal, what information about the emission is described? ＩＴＵ電波名称の最初の文字が位相変調信号を表すＧである時、電波の何の 情報を表すか？ A. The nature of any signal multiplexing B. The maximum permissible deviation C. The nature of signals modulating the main carrier D. The type of modulation of the main carrier 　　主搬送波の変調方式。 E8B19 (D) In a pulse-position modulation system, what parameter does the modulating signal vary? パルス位置変調方式で、変調信号が変化させるパラメーターは？ A. The number of pulses per second B. Both the frequency and amplitude of the pulses C. The duration of the pulses D. The time at which each pulse occurs 　　それぞれのパルスが発生する時刻。 E8B20 (B) In a pulse-width modulation system, what parameter does the modulating signal vary? パルス幅変調方式で、変調信号が変化させるパラメーターは？ A. Pulse frequency B. Pulse duration 　　パルス時間。 C. Pulse amplitude D. Pulse intensity E8B21 (A) How are the pulses of a pulse-modulated signal usually transmitted? 位相変調信号のパルスは通常どのように送信されるか？ A. A pulse of relatively short duration is sent; a relatively long period of time separates each pulse 　　比較的長い時間間隔で、比較的短い時間のパルスが送られる。 B. A pulse of relatively long duration is sent; a relatively short period of time separates each pulse C. A group of short pulses are sent in a relatively short period of time; a relatively long period of time separates each group D. A group of short pulses are sent in a relatively long period of time; a relatively short period of time separates each group E8B22 (D) In an FM-phone signal, what is the term for the ratio between the deviation of the frequency modulated signal and the modulating frequency? ＦＭ音声信号で、変調された信号周波数の偏移と変調周波数の比の呼び名は？ A. FM compressibility B. Quieting index C. Percentage of modulation D. Modulation index 　　変調指数。 E8B23 (B) What is meant by deviation ratio? 偏移率とは？ A. The ratio of the audio modulating frequency to the center carrier frequency B. The ratio of the maximum carrier frequency deviation to the highest audio modulating frequency 　　最大搬送波周波数偏移の最大音声変調周波数に対する比率。 C. The ratio of the carrier center frequency to the audio modulating frequency D. The ratio of the highest audio modulating frequency to the average audio modulating frequency E8B24 (A) What is the deviation ratio of an FM-phone signal having a maximum frequency swing of plus or minus 7.5 kHz and accepting a maximum modulation rate of 3.5 kHz? 最大周波数振幅が±７．５ＫＨｚで最大変調率３．５ＫＨｚを受容するＦＭ音声信号の 偏移率は？ A. 2.14 B. 0.214 C. 0.47 D. 47 E8C Digital signals: including CW; digital signal information rate vs bandwidth; spread-spectrum communications E8C01 (D) What digital code consists of elements having unequal length? 長さが均一でない要素から出来ているデジタル符号は？ A. ASCII B. AX.25 C. Baudot D. Morse code 　　モールス符号。 E8C02 (B) What are some of the differences between the Baudot digital code and ASCII? ボードットデジタル符号とＡＳＣＩＩとの違いは？ A. Baudot uses four data bits per character, ASCII uses seven; Baudot uses one character as a shift code, ASCII has no shift code B. Baudot uses five data bits per character, ASCII uses seven; Baudot uses two characters as shift codes, ASCII has no shift code 　　ボードットは、１文字当り５データビット、ＡＳＣＩＩは７データビットを使う； 　　ボードットは、シフト符号に２文字使い、ＡＳＣＩＩにシフト符号は無い。 C. Baudot uses six data bits per character, ASCII uses seven; Baudot has no shift code, ASCII uses two characters as shift codes D. Baudot uses seven data bits per character, ASCII uses eight; Baudot has no shift code, ASCII uses two characters as shift codes E8C03 (C) What is one advantage of using the ASCII code for data communications? データ通信でＡＳＣＩＩ符号を使う利点は？ A. It includes built-in error-correction features B. It contains fewer information bits per character than any other code C. It is possible to transmit both upper and lower case text 　　大文字と小文字の文章を送信出来る。 D. It uses one character as a shift code to send numeric and special characters E8C04 (B) What digital communications system is well suited for meteor-scatter Communications at times other than during meteor showers? 流星シャワー時以外で、流星散乱通信に適したデジタル通信方式は？ A. ACSSB B. Computerized high speed CW (HSCW) 　　コンピュータ使用高速ＣＷ。 C. AMTOR D. Spread spectrum E8C05 (D) What type of error control system does Mode A AMTOR use? ＡモードＡＭＴＯＲが使う誤り制御方式は？ A. Each character is sent twice B. The receiving station checks the calculated frame check sequence (FCS) against the transmitted FCS C. The receiving station checks the calculated frame parity against the transmitted parity D. The receiving station automatically requests repeats when needed 　　必要に応じて、受信極が自動的に再送を依頼する。 E8C06 (A) What type of error control system does Mode B AMTOR use? ＢモードＡＭＴＯＲが使う誤り制御方式は？ A. Each character is sent twice 　　各文字を２度送る。 B. The receiving station checks the calculated frame check sequence (FCS) against the transmitted FCS C. The receiving station checks the calculated frame parity against the computer-sequencing clock D. The receiving station automatically requests repeats when needed E8C07 (C) What is the necessary bandwidth of a 13-WPM international Morse code emission A1A transmission? １３ＷＰＭ国際モールス符号電波Ａ１Ａ送信に必要な帯域幅は？ A. Approximately 13 Hz B. Approximately 26 Hz C. Approximately 52 Hz 　　おおよそ５２Ｈｚ。 D. Approximately 104 Hz E8C08 (C) What is the necessary bandwidth for a 170-hertz shift, 300-baud ASCII emission J2D transmission? １７０Ｈｚシフト、３００ボーＡＳＣＩＩ電波Ｊ２Ｄ送信に必要な帯域幅は？ A. 0 Hz B. 0.3 kHz C. 0.5 kHz 　　０．５ＫＨｚ。 D. 1.0 kHz E8C09 (D) What is the necessary bandwidth of a 1000-Hz shift, 1200-baud ASCII emission F1D transmission? １０００Ｈｚシフト、１２００ボーＡＳＣＩＩ電波Ｆ１Ｄ送信に必要な帯域幅は？ A. 1000 Hz B. 1200 Hz C. 440 Hz D. 2400 Hz E8C10 (A) What is the necessary bandwidth of a 4800-Hz frequency shift, 9600-baud ASCII emission F1D transmission? ４８００Ｈｚ周波数シフト、９６００ボーＡＳＣＩＩ電波Ｆ１Ｄ送信に必要な帯域幅は？ A. 15.36 kHz B. 9.6 kHz C. 4.8 kHz D. 5.76 kHz E8C11 (D) What term describes a wide-bandwidth communications system in which the RF carrier varies according to some predetermined sequence? 予め決められたシーケンスに従ってＲＦ搬送波が変化する広帯域通信方式は？ A. Amplitude compandored single sideband B. AMTOR C. Time-domain frequency modulation D. Spread-spectrum communication 　　スペクトラム拡張通信。 E8C12 (A) What spread-spectrum communications technique alters the center frequency of a conventional carrier many times per second in accordance with a pseudo-random list of channels? チャンネルの擬似乱数表に従って毎秒何度も通常搬送波の中央周波数を変える スペクトラム拡張通信の手法は？ A. Frequency hopping 　　周波数ホッピング。 B. Direct sequence C. Time-domain frequency modulation D. Frequency compandored spread-spectrum E8C13 (B) What spread-spectrum communications technique uses a very fast binary bit stream to shift the phase of an RF carrier? 非常に高速な２進ビット流れを使ってＲＦ搬送波の位相をシフトするスペクトラム拡張通信の 手法は？ A. Frequency hopping B. Direct sequence 　　直接シーケンス。 C. Binary phase-shift keying D. Phase compandored spread-spectrum E8C14 (C) What controls the spreading sequence of an amateur spread-spectrum transmission? アマチュアのスペクトラム拡張送信の拡張シーケンスを制御するのは？ A. A frequency-agile linear amplifier B. A crystal-controlled filter linked to a high-speed crystal switching mechanism C. A binary linear-feedback shift register 　　２進線形フィードバックシフトレジスター。 D. A binary code which varies if propagation changes E8C15 (D) What makes spread-spectrum communications resistant to interference? スペクトラム拡張通信を混信に強くするものは？ A. Interfering signals are removed by a frequency-agile crystal filter B. Spread-spectrum transmitters use much higher power than conventional carrier-frequency transmitters C. Spread-spectrum transmitters can hunt for the best carrier frequency to use within a given RF spectrum D. Only signals using the correct spreading sequence are received 　　正しい拡張シーケンスを用いた信号だけが受信される。 E8C16 (B) What reduces interference from spread-spectrum transmitters to conventional communications in the same band? 同じ帯域の通常の通信に対するスペクトラム拡張送信からの混信を抑制するものは？ A. A spread-spectrum transmitter avoids channels within the band which are in use by conventional transmitters B. Spread-spectrum signals appear only as low-level noise in conventional receivers 　　スペクトラム拡張信号は通常の受信機では低レベル雑音にしか見えない。 C. Spread-spectrum signals change too rapidly to be detected by conventional receivers D. Special crystal filters are needed in conventional receivers to detect spread-spectrum signals E8D Peak amplitude (positive and negative); peak-to-peak values: measurements; Electromagnetic radiation; wave polarization; signal-to-noise (S/N) ratio E8D01 (D) What is the term for the amplitude of the maximum positive excursion of a signal as viewed on an oscilloscope? オシロスコープで見る時、信号の最大プラス振れの呼び名は？ A. Peak-to-peak voltage B. Inverse peak negative voltage C. RMS voltage D. Peak positive voltage 　　ピークプラス電圧。 E8D02 (A) What is the easiest voltage amplitude dimension to measure by viewing a pure sine wave signal on an oscilloscope? 純正な正弦波信号をオシロスコープで見る事で最も簡単に測定出来る電圧の大きさは？ A. Peak-to-peak voltage 　　ピーク間電圧。 B. RMS voltage C. Average voltage D. DC voltage E8D03 (B) What is the relationship between the peak-to-peak voltage and the peak voltage amplitude in a symmetrical waveform? 対称な波形でピーク間電圧とピーク電圧との関係は？ A. 1:1 B. 2:1 C. 3:1 D. 4:1 E8D04 (A) What input-amplitude parameter is valuable in evaluating the signal-handling capability of a Class A amplifier? Ａ級アンプの信号処理能力を評価するのに有用な入力振幅パラメーターは？ A. Peak voltage 　　ピーク電圧。 B. RMS voltage C. An average reading power output meter D. Resting voltage E8D05 (B) What is the PEP output of a transmitter that has a maximum peak of 30 volts to a 50-ohm load as observed on an oscilloscope? オシロスコープで５０Ωの負荷に最大ピーク３０Ｖが見られた送信機のＰＥＰ出力は？ A. 4.5 watts B. 9 watts C. 16 watts D. 18 watts E8D06 (D) If an RMS reading AC voltmeter reads 65 volts on a sinusoidal waveform, what is the peak-to-peak voltage? ＲＭＳ読みＡＣ電圧計が正弦波形で６５Ｖを示す時、ピーク間電圧は？ A. 46 volts B. 92 volts C. 130 volts D. 184 volts E8D07 (A) What is the advantage of using a peak-reading voltmeter to monitor the output of a single-sideband transmitter? ＳＳＢ送信機の出力をモニターするのにピーク読み電圧計を使う利点とは？ A. It would be easy to calculate the PEP output of the transmitter 　　送信機のＰＥＰ出力を計算し易い。 B. It would be easy to calculate the RMS output power of the transmitter C. It would be easy to calculate the SWR on the transmission line D. It would be easy to observe the output amplitude variations E8D08 (C) What is an electromagnetic wave? 電磁波とは？ A. Alternating currents in the core of an electromagnet B. A wave consisting of two electric fields at right angles to each other C. A wave consisting of an electric field and a magnetic field at right angles to each other 　　互いに垂直な電界と磁界から出来ている波。 D. A wave consisting of two magnetic fields at right angles to each other E8D09 (D) Which of the following best describes electromagnetic waves traveling in free space? 自由空間を伝わる電磁波を最もよく表すものは？ A. Electric and magnetic fields become aligned as they travel B. The energy propagates through a medium with a high refractive index C. The waves are reflected by the ionosphere and return to their source D. Changing electric and magnetic fields propagate the energy across a vacuum 　　変化する電界と磁界が真空中でエネルギーを伝播する。 E8D10 (B) What is meant by circularly polarized electromagnetic waves? 円偏波電磁波とは？ A. Waves with an electric field bent into a circular shape B. Waves with a rotating electric field 　　電界が回転する波。 C. Waves that circle the Earth D. Waves produced by a loop antenna E8D11 (D) What is the polarization of an electromagnetic wave if its magnetic field is parallel to the surface of the Earth? 磁界が地表と平行な電磁波の偏波は？ A. Circular B. Horizontal C. Elliptical D. Vertical 　垂直。 E8D12 (A) What is the polarization of an electromagnetic wave if its magnetic field is perpendicular to the surface of the Earth? 磁界が地表に垂直な電磁波の偏波は？ A. Horizontal 　　水平。 B. Circular C. Elliptical D. Vertical E8D13 (D) What is the primary source of noise that can be heard in an HF-band receiver with an antenna connected? アンテナが繋がったＨＦ帯受信機で聞こえる雑音の主な発生源は？ A. Detector noise B. Induction motor noise C. Receiver front-end noise D. Atmospheric noise 　　大気雑音。 E8D14 (A) At approximately what speed do electromagnetic waves travel in free space? 自由空間を電磁波が伝わる速さは？ A. 300 million meters per second B. 468 million meters per second C. 186,300 feet per second D. 300 million miles per second E8D15 (D) To ensure you do not exceed the maximum allowable power, what kind of meter would you use to monitor the output signal of a properly adjusted single- sideband transmitter? 最大許容出力を超えていない事を確かめる為に、正しく調節されたＳＳＢ送信機の 出力信号をモニターする為に使う測定器は？ A. An SWR meter reading in the forward direction B. A modulation meter C. An average reading wattmeter D. A peak-reading wattmeter 　　ピーク読み電力計。 E8D16 (A) What is the average power dissipated by a 50-ohm resistive load during one complete RF cycle having a peak voltage of 35 volts? ピーク電圧が３５ＶのＲＦ１サイクルで５０Ωの抵抗負荷が消費する平均電力は？ A. 12.2 watts B. 9.9 watts C. 24.5 watts D. 16 watts E8D17 (D) If an RMS reading voltmeter reads 34 volts on a sinusoidal waveform, what is the peak voltage? ＲＭＳ読みの電圧計が正弦波形で３４Ｖを示したら、ピーク電圧は？ A. 123 volts B. 96 volts C. 55 volts D. 48 volts SUBELEMENT E9 -- ANTENNAS [5 Exam Questions -- 5 Groups] E9A Isotropic radiators: definition; used as a standard for comparison; radiation pattern; basic antenna parameters: radiation resistance and reactance (including wire dipole, folded dipole), gain, beamwidth, efficiency E9A01 (C) Which of the following describes an isotropic radiator? 等方向性輻射器を表すものは？ A. A grounded radiator used to measure earth conductivity B. A horizontal radiator used to compare Yagi antennas C. A theoretical radiator used to compare other antennas 　　他のアンテナの比較に使う理論的輻射器。 D. A spacecraft radiator used to direct signals toward the earth E9A02 (A) When is it useful to refer to an isotropic radiator? 等方向性輻射器との比較が役に立つのは？ A. When comparing the gains of directional antennas 　　指向性アンテナのゲインを比較する時。 B. When testing a transmission line for standing-wave ratio C. When directing a transmission toward the tropical latitudes D. When using a dummy load to tune a transmitter E9A03 (B) How much gain does a 1/2-wavelength dipole have over an isotropic radiator? １／２波長ＤＰの等方向性輻射器に対するゲインは？ A. About 1.5 dB B. About 2.1 dB 　　大体２．１ｄＢ。 C. About 3.0 dB D. About 6.0 dB E9A04 (D) Which of the following antennas has no gain in any direction? どの方向にもゲインが無いアンテナは？ A. Quarter-wave vertical B. Yagi C. Half-wave dipole D. Isotropic radiator 　　等方向性輻射器 E9A05 (C) Which of the following describes the radiation pattern of an isotropic radiator? 等方向性輻射器の輻射パターンを表すものは？ A. A teardrop in the vertical plane B. A circle in the horizontal plane C. A sphere with the antenna in the center 　　アンテナが中心にある球。 D. Crossed polarized with a spiral shape E9A06 (A) Why would one need to know the feed point impedance of an antenna? アンテナの給電点インピーダンスを知る必要が在るのは？ A. To match impedances for maximum power transfer 　　インピーダンスの整合を取って、最大出力を送る為。 B. To measure the near-field radiation density from a transmitting antenna C. To calculate the front-to-side ratio of the antenna D. To calculate the front-to-back ratio of the antenna E9A07 (B) What factors determine the radiation resistance of an antenna? アンテナの輻射パターンを決める要因は？ A. Transmission-line length and antenna height B. Antenna location with respect to nearby objects and the conductors' length/diameter ratio 　　付近の物体に対するアンテナの位置と導体の長さと経の比率。 C. It is a physical constant and is the same for all antennas D. Sunspot activity and time of day E9A08 (C) What is the term for the ratio of the radiation resistance of an antenna to the total resistance of the system? アンテナの輻射抵抗とアンテナシステムの全抵抗との比率の呼び名は？ A. Effective radiated power B. Radiation conversion loss C. Antenna efficiency 　　アンテナ効率。 D. Beamwidth E9A09 (D) What is included in the total resistance of an antenna system? アンテナシステムの全抵抗に含まれるものは？ A. Radiation resistance plus space impedance B. Radiation resistance plus transmission resistance C. Transmissio degrees B. nce plus radiation resistance D. Radiation resistance plus ohmic resistance 　　輻射抵抗とΩ抵抗。 E9A10 (C) What is a folded dipole antenna? フォールデッドダイポールアンテナとは？ A. A dipole one-quarter wavelength long B. A type of ground-plane antenna C. A dipole whose ends are connected by a one-half wavelength piece of wire 　　末端が半波長のワイヤで繋がれたダイポール。 D. A hypothetical antenna used in theoretical discussions to replace the radiation resistance E9A11 (A) What is meant by antenna gain? アンテナゲインの意味は？ A. The numerical ratio relating the radiated signal strength of an antenna to that of another antenna 　　アンテナの輻射信号強度と他のアンテナのそれを比較した数値的な比率。 B. The numerical ratio of the signal in the forward direction to the signal in the back direction C. The numerical ratio of the amount of power radiated by an antenna compared to the transmitter output power D. The final amplifier gain minus the transmission-line losses (including any phasing lines present) E9A12 (B) What is meant by antenna bandwidth? アンテナ帯域幅とは？ A. Antenna length divided by the number of elements B. The frequency range over which an antenna can be expected to perform well 　　アンテナが十分機能すると予想される周波数範囲。 C. The angle between the half-power radiation points D. The angle formed between two imaginary lines drawn through the ends of the elements E9A13 (A) How can the approximate beamwidth of a beam antenna be determined? ビームアンテナのおおまかなビーム幅を決めるには？ A. Note the two points where the signal strength of the antenna is down 3 dB from the maximum signal point and compute the angular difference 　　アンテナの信号強度が最大信号点よりも３ｄＢ下がる２点を見つけて、 　　その角度を計算する。 B. Measure the ratio of the signal strengths of the radiated power lobes from the front and rear of the antenna C. Draw two imaginary lines through the ends of the elements and measure the angle between the lines D. Measure the ratio of the signal strengths of the radiated power lobes from the front and side of the antenna E9A14 (B) How is antenna efficiency calculated? アンテナ効率の計算の仕方は？ A. (radiation resistance / transmission resistance) x 100% B. (radiation resistance / total resistance) x 100% 　　（輻射抵抗／全抵抗）×１００％。 C. (total resistance / radiation resistance) x 100% D. (effective radiated power / transmitter output) x 100% E9A15 (A) How can the efficiency of an HF grounded vertical antenna be made comparable to that of a half-wave dipole antenna? ＨＦ接地垂直アンテナの効率を半波長ダイポールアンテナの効率と同レベルにするには？ A. By installing a good ground radial system 　　接地ラジアルシステムの良いものを据え付ける。 B. By isolating the coax shield from ground C. By shortening the vertical D. By lengthening the vertical E9A16 (D) What theoretical reference antenna provides a comparison for antenna measurements? アンテナ測定の比較の為に在る理論的な参照アンテナは？ A. Quarter-wave vertical B. Yagi C. Bobtail curtain D. Isotropic radiator 　　等方向性輻射器。 E9A17 (A) How much gain does an antenna have over a 1/2-wavelength dipole when it has 6 dB gain over an isotropic radiator? 等方向性輻射器に比較して６ｄＢのゲインの在るアンテナの１／２波長ダイポールに対するゲインは？ A. About 3.9 dB B. About 6.0 dB C. About 8.1 dB D. About 10.0 dB E9A18 (B) How much gain does an antenna have over a 1/2-wavelength dipole when it has 12 dB gain over an isotropic radiator? 等方向性輻射器に比較して１２ｄＢのゲインの在るアンテナの１／２波長ダイポールに対するゲインは？ A. About 6.1 dB B. About 9.9 dB C. About 12.0 dB D. About 14.1 dB E9A19 (D) Which of the following describes the directivity of an isotropic radiator? 等方向性輻射器の指向性を表すものは？ A. Directivity in the E plane B. Directivity in the H plane C. Directivity in the Z plane D. No directivity at all 　　指向性は全く無い。 E9A20 (C) What is meant by the radiation resistance of an antenna? アンテナの輻射抵抗とは？ A. The combined losses of the antenna elements and feed line B. The specific impedance of the antenna C. The equivalent resistance that would dissipate the same amount of power as that radiated from an antenna 　　アンテナから輻射される電力と同じ電力を消費する等価抵抗。 D. The resistance in the atmosphere that an antenna must overcome to be able to radiate a signal E9B Free-space antenna patterns: E and H plane patterns (i.e., azimuth and elevation in free-space); gain as a function of pattern; antenna design (computer modeling of antennas) E9B01 (C) What determines the free-space polarization of an antenna? アンテナの自由空間偏波を決めるのは？ A. The orientation of its magnetic field (H Field) B. The orientation of its free-space characteristic impedance C. The orientation of its electric field (E Field) 　　アンテナの電界の向き。 D. Its elevation pattern E9B02 (B) In the free-space H-Field radiation pattern shown in Figure E9-1, what is the 3- dB beamwidth? 図Ｅ９−１の自由空間磁界輻射パターンで、３ｄＢのビーム幅は？ A. 75 degrees B. 50 degrees 　　５０°。 C. 25 degrees D. 30 degrees E9B03 (B) In the free-space H-Field pattern shown in Figure E9-1, what is the front-to- back ratio? 図Ｅ９−１の自由空間磁界輻射パターンで、前後比は？ A. 36 dB B. 18 dB C. 24 dB D. 14 dB E9B04 (B) In the free-space H-field pattern shown in Figure E9-1, what is the front-to- side ratio? 図Ｅ９−１の自由空間磁界輻射パターンで、前側比は？ A. 12 dB B. 14 dB C. 18 dB D. 24 dB E9B05 (D) What information is needed to accurately evaluate the gain of an antenna? アンテナのゲインを正確に調べるには何の情報が要るか？ A. Radiation resistance 　　輻射抵抗。 B. E-Field and H-Field patterns 　　電界と磁界パターン。 C. Loss resistance 　　損失抵抗。 D. All of these choices 　　全て正しい。 E9B06 (D) Which is NOT an important reason to evaluate a gain antenna across the whole frequency band for which it was designed? 設計された周波数帯の全域に渡ってゲインアンテナを評価する理由でないものは？ A. The gain may fall off rapidly over the whole frequency band B. The feed-point impedance may change radically with frequency C. The rearward pattern lobes may vary excessively with frequency D. The dielectric constant may vary significantly 　　誘電率が結構変わるかもしれない事。 E9B07 (B) What usually occurs if a Yagi antenna is designed solely for maximum forward gain? 前方最大ゲインのみの為に八木アンテナを設計すると何が起こるか？ A. The front-to-back ratio increases B. The feed-point impedance becomes very low 　　給電点インピーダンスが非常に低くなる。 C. The frequency response is widened over the whole frequency band D. The SWR is reduced E9B08 (A) If the boom of a Yagi antenna is lengthened and the elements are properly retuned, what usually occurs? 八木アンテナのブームが延長され、エレメントが正しく同調されるとどうなるか？ A. The gain increases 　　ゲインが上がる。 B. The SWR decreases C. The front-to-back ratio increases D. The gain bandwidth decreases rapidly E9B09 (B) What type of computer program is commonly used for modeling antennas? アンテナのモデル作りに良く使われるコンピュータープログラムは？ A. Graphical analysis B. Method of Moments 　　モーメント法。 C. Mutual impedance analysis D. Calculus differentiation with respect to physical properties E9B10 (A) What is the principle of a Method of Moments analysis? モーメント解析の主要な方法は？ A. A wire is modeled as a series of segments, each having a distinct value of current 　　ワイヤを個々の電流を持ったセグメントの連続体としてモデルする。 B. A wire is modeled as a single sine-wave current generator C. A wire is modeled as a series of points, each having a distinct location in space D. A wire is modeled as a series of segments, each having a distinct value of voltage across it E9C Phased vertical antennas; radiation patterns; beverage antennas; rhombic antennas: resonant; terminated; radiation pattern; antenna patterns: elevation above real ground, ground effects as related to polarization, take-off angles as a function of height above ground E9C01 (D) What is the radiation pattern of two 1/4-wavelength vertical antennas spaced 1/2-wavelength apart and fed 180 degrees out of phase? １／２波長離れて、位相差が１８０°の２本の１／４波長垂直アンテナの輻射パターンは？ A. Unidirectional cardioid B. Omnidirectional C. Figure-8 broadside to the antennas D. Figure-8 end-fire in line with the antennas 　　アンテナ軸に沿ったエンドファイヤ８の字。 E9C02 (A) What is the radiation pattern of two 1/4-wavelength vertical antennas spaced 1/4-wavelength apart and fed 90 degrees out of phase? １／４波長離れて、位相差が９０°の２本の１／４波長垂直アンテナの輻射パターンは？ A. Unidirectional cardioid 　　単方向性カーディオイド。 B. Figure-8 end-fire C. Figure-8 broadside D. Omnidirectional E9C03 (C) What is the radiation pattern of two 1/4-wavelength vertical antennas spaced 1/2-wavelength apart and fed in phase? １／２波長離れて、同位相差の２本の１／４波長垂直アンテナの輻射パターンは？ A. Omnidirectional B. Cardioid unidirectional C. Figure-8 broadside to the antennas 　　アンテナのブロードサイドに８の字。 D. Figure-8 end-fire in line with the antennas E9C04 (D) What is the radiation pattern of two 1/4-wavelength vertical antennas spaced 1/4-wavelength apart and fed 180 degrees out of phase? １／４波長離れて、位相差が１８０°の２本の１／４波長垂直アンテナの輻射パターンは？ A. Omnidirectional B. Cardioid unidirectional C. Figure-8 broadside to the antennas D. Figure-8 end-fire in line with the antennas 　　アンテナ軸に沿ったエンドファイヤ８の字。 E9C05 (D) What is the radiation pattern for two 1/4-wavelength vertical antennas spaced 1/8-wavelength apart and fed 180 degrees out of phase? １／８波長離れて、位相差が１８０°の２本の１／４波長垂直アンテナの輻射パターンは？ A. Omnidirectional B. Cardioid unidirectional C. Figure-8 broadside to the antennas D. Figure-8 end-fire in line with the antennas 　　アンテナ軸に沿ったエンドファイヤ８の字。 E9C06 (B) What is the radiation pattern for two 1/4-wavelength vertical antennas spaced 1/4-wavelength apart and fed in phase? １／４波長離れて、同位相差の２本の１／４波長垂直アンテナの輻射パターンは？ A. Substantially unidirectional B. Elliptical 　　楕円。 C. Cardioid unidirectional D. Figure-8 end-fire in line with the antennas E9C07 (B) Which of the following is the best description of a resonant rhombic antenna? 共振ロンビックアンテナの最も良い説明は？ A. Unidirectional; four-sided, each side a half-wavelength long; terminated in a resistance equal to its characteristic impedance B. Bidirectional; four-sided, each side approximately one wavelength long; open at the end opposite the transmission line connection 　　両方向性；四辺、一辺が大体１波長；給電線接続の反対側の末端が開。 C. Four-sided; an LC network at each vertex except for the transmission connection; tuned to resonate at the operating frequency D. Four-sided, each side of a different physical length; traps at each vertex for changing resonance according to band usage E9C08 (A) What are the advantages of a terminated rhombic antenna? 末端の閉じたロンビックアンテナの利点は？ A. Wide frequency range, high gain and high front-to-back ratio 　　広い周波数範囲、高ゲインと高前後比。 B. High front-to-back ratio, compact size and high gain C. Unidirectional radiation pattern, high gain and compact size D. Bidirectional radiation pattern, high gain and wide frequency range E9C09 (C) What are the disadvantages of a terminated rhombic antenna for the HF bands? 末端が閉じたＨＦ帯用ロンビックアンテナの欠点は？ A. A large area for proper installation and a narrow bandwidth B. A large area for proper installation and a low front-to-back ratio C. A large area and four sturdy supports for proper installation 　　正しい設置に広い面積と４つの頑丈な支持構造が要る。 D. A large amount of aluminum tubing and a low front-to-back ratio E9C10 (B) What is the effect of a terminating resistor on a rhombic antenna? ロンビックアンテナの終端抵抗の効果は？ A. It reflects the standing waves on the antenna elements back to the transmitter B. It changes the radiation pattern from essentially bidirectional to essentially unidirectional 　　輻射パターンを基本的に両方向性から単方向性に変える。 C. It changes the radiation pattern from horizontal to vertical polarization D. It decreases the ground loss E9C11 (A) What type of antenna pattern over real ground is shown in Figure E9-2? 図Ｅ９−２の地上のアンテナパターンは？ A. Elevation pattern 　　仰角パターン。 B. Azimuth pattern C. E-Plane pattern D. Polarization pattern E9C12 (C) In the H field antenna radiation pattern shown in Figure E9-2, what is the elevation angle of the peak response? 図９−２の磁界アンテナ輻射パターンで、ピーク反応の仰角は？ A. 45 degrees B. 75 degrees C. 7.5 degrees D. 25 degrees E9C13 (B) In the H field antenna radiation pattern shown in Figure E9-2, what is the front-to-back ratio? 図９−２の磁界アンテナ輻射パターンで、前後比は？ A. 15 dB B. 28 dB C. 3 dB D. 24 dB E9C14 (A) In the H field antenna radiation pattern shown in Figure E9-2, how many elevation lobes appear in the forward direction? 図９−２の磁界アンテナ輻射パターンで、前方に現れる仰角ローブの数は？ A. 4 B. 3 C. 1 D. 7 E9C15 (D) How is the far-field elevation pattern of a vertically polarized antenna affected by being mounted over seawater versus rocky ground? 石ころの地面に対して、海水の上に設置すると、垂直偏波アンテナの 遠界仰角パターンはどう変わるか？ A. The low-angle radiation decreases B. The high-angle radiation increases C. Both the high- and low-angle radiation decrease D. The low-angle radiation increases 　　低仰角輻射が増える。 E9C16 (C) If only a modest on-ground radial system can be used with an eighth-wavelength- high, inductively loaded vertical antenna, what would be the best compromise to minimize near-field losses? 高さ１／８波長、誘導負荷の垂直アンテナでへぼな地表ラジアルシステムしか 使えない場合、近界損失を最小にするベストな妥協策は？ A. 4 radial wires, 1 wavelength long B. 8 radial wires, a half-wavelength long C. A wire-mesh screen at the antenna base, an eighth-wavelength square 　　アンテナ基部に１／８波長四方のワイヤメッシュスクリーンを付ける。 D. 4 radial wires, 2 wavelengths long E9C17 (D) What is one characteristic of a Beverage antenna? ベバレッジアンテナの特性の一つは？ A. For best performance it must not exceed 1/4 wavelength in length at the desired frequency B. For best performance it must be mounted more than 1 wavelength above ground at the desired frequency C. For best performance it should be configured as a four-sided loop D. For best performance it should be longer than one wavelength 　　最高の性能を出すには１波長よりも長くする。 E9C18 (B) How would the electric field be oriented for a Yagi with three elements mounted parallel to the ground? 地表に水平に設置された３エレメント八木アンテナの電界の向きは？ A. Vertically B. Horizontally 　　水平。 C. Right-hand elliptically D. Left-hand elliptically E9C19 (A) What strongly affects the shape of the far-field, low-angle elevation pattern of a vertically polarized antenna? 垂直偏波アンテナの遠界、低仰角パターンの形状に強く影響するものは？ A. The conductivity and dielectric constant of the soil 　　土壌の導電率と誘電率。 B. The radiation resistance of the antenna C. The SWR on the transmission line D. The transmitter output power E9C20 (B) Why are elevated-radial counterpoises popular with vertically polarized antennas? 垂直偏波アンテナで高位置ラジアルカウンターポイズが一般的な訳は？ A. They reduce the far-field ground losses B. They reduce the near-field ground losses, compared to on-ground radial systems using more radials 　　ラジアルの数を増やした地表ラジアルシステムより近界地表損失が減る。 C. They reduce the radiation angle D. None of these choices is correct E9C21 (C) What is a terminated rhombic antenna? 終端が閉じたロンビックアンテナとは？ A. An antenna resonant at approximately double the frequency of the intended band of operation B. An open-ended bidirectional antenna C. A unidirectional antenna terminated in a resistance equal to its characteristic impedance 　　特性インピーダンスと同じ抵抗で終端を閉じた単方向性アンテナ。 D. A horizontal triangular antenna consisting of two adjacent sides and the long diagonal of a resonant rhombic antenna E9D Space and satellite communications antennas: gain; beamwidth; tracking; losses in real antennas and matching: resistivity losses, losses in resonating elements (loading coils, matching networks, etc. {i.e., mobile, trap}); SWR bandwidth; efficiency E9D01 (A) What factors determine the receiving antenna gain required at an amateur satellite station in earth operation? 地球運用に於けるアマチュア衛星局に求められる受信アンテナゲインを決める要因は？ A. Height, transmitter power and antennas of satellite 　　高さ、送信出力、衛星のアンテナ。 B. Length of transmission line and impedance match between receiver and transmission line C. Preamplifier location on transmission line and presence or absence of RF amplifier stages D. Height of earth antenna and satellite orbit E9D02 (A) What factors determine the EIRP required by an amateur satellite station in earth operation? 地球運用に於けるアマチュア衛星局に求められるＥＩＲＰを決める要因は？ A. Satellite antennas and height, satellite receiver sensitivity 　　衛星アンテナと高さ、衛星受信機の感度。 B. Path loss, earth antenna gain, signal-to-noise ratio C. Satellite transmitter power and orientation of ground receiving antenna D. Elevation of satellite above horizon, signal-to-noise ratio, satellite transmitter power E9D03 (B) What is the approximate beamwidth of a symmetrical pattern antenna with a gain of 20 dB as compared to an isotropic radiator? 等方向性輻射器と比較してゲイン２０ｄＢの対称パターンアンテナのおおよそのビーム幅は？ A. 10 degrees B. 20 degrees C. 45 degrees D. 60 degrees E9D04 (C) How does the gain of a parabolic dish antenna change when the operating frequency is doubled? パラボラアンテナの運用周波数が２倍になったらゲインはどう変わるか？ A. Gain does not change B. Gain is multiplied by 0.707 C. Gain increases 6 dB 　　６ｄＢ増える。 D. Gain increases 3 dB E9D05 (C) How is circular polarization produced using linearly polarized antennas? 線形偏波アンテナを使って円偏波を作るには？ A. Stack two Yagis, fed 90 degrees out of phase, to form an array with the respective elements in parallel planes B. Stack two Yagis, fed in phase, to form an array with the respective elements in parallel planes C. Arrange two Yagis perpendicular to each other, with the driven elements in the same plane, fed 90 degrees out of phase 　　２本の八木アンテナを互いに垂直に組んで、放射エレメントを同じ面にし、 　　位相差９０°で給電する。 D. Arrange two Yagis perpendicular to each other, with the driven elements in the same plane, fed in phase E9D06 (D) How does the beamwidth of an antenna vary as the gain is increased? ゲインが増えると、アンテナのビーム幅はどう変わる？ A. It increases geometrically B. It increases arithmetically C. It is essentially unaffected D. It decreases 　　減る。 E9D07 (A) Why does a satellite communications antenna system for earth operation need to have rotators for both azimuth and elevation control? 地上運用の衛星通信アンテナシステムが水平と垂直制御ローテーターを必用とする訳は？ A. In order to track the satellite as it orbits the earth 　　衛星が地球を周回するのを追尾する為。 B. Because the antennas are large and heavy C. In order to point the antenna above the horizon to avoid terrestrial interference D. To rotate antenna polarization along the azimuth and elevate the system towards the satellite E9D08 (A) For a shortened vertical antenna, where should a loading coil be placed to minimize losses and produce the most effective performance? 短縮垂直アンテナで、損失を最小に、効率を最大にする為にはローディングコイルを 何処に入れるか？ A. Near the center of the vertical radiator 　　垂直輻射器の真中付近。 B. As low as possible on the vertical radiator C. As close to the transmitter as possible D. At a voltage node E9D09 (C) Why should an HF mobile antenna loading coil have a high ratio of reactance to resistance? ＨＦモービルアンテナのローディングコイルのリアクタンス・抵抗比率が高い理由は？ A. To swamp out harmonics B. To maximize losses C. To minimize losses 　　損失を最小にする為。 D. To minimize the Q E9D10 (A) What is a disadvantage of using a trap antenna? トラップアンテナを使う欠点は？ A. It will radiate harmonics 　　高調波を輻射する。 B. It can only be used for single-band operation C. It is too sharply directional at lower frequencies D. It must be neutralized E9D11 (A) How must the driven element in a 3-element Yagi be tuned to use a hairpin matching system? ヘアピンマッチングを使う為に３エレメント八木アンテナの放射器の調整は？ A. The driven element reactance is capacitive 　　放射器のリアクタンスは容量性とする。 B. The driven element reactance is inductive C. The driven element resonance is lower than the operating frequency D. The driven element radiation resistance is higher than the characteristic impedance of the transmission line E9D12 (C) What is the equivalent lumped-constant network for a hairpin matching system on a 3-element Yagi? ３エレメント八木アンテナのヘアピンマッチングと等価なランプ定数回路は？ A. Pi network B. Pi-L network C. L network 　　Ｌ回路。 D. Parallel-resonant tank E9D13 (B) What happens to the bandwidth of an antenna as it is shortened through the use of loading coils? ローディングコイルを使って短縮したらアンテナの帯域幅はどうなる？ A. It is increased B. It is decreased 　　狭くなる。 C. No change occurs D. It becomes flat E9D14 (D) What is an advantage of using top loading in a shortened HF vertical antenna? 短縮ＨＦ垂直アンテナでトップローディングの利点は？ A. Lower Q B. Greater structural strength C. Higher losses D. Improved radiation efficiency 　　輻射効率が良くなる。 E9D15 (A) What is the approximate input terminal impedance at the center of a folded dipole antenna? フォールデッドダイポールアンテナの中心に在る入力端子インピーダンスは？ A. 300 ohms B. 72 ohms C. 50 ohms D. 450 ohms E9D16 (D) Why is a loading coil often used with an HF mobile antenna? ＨＦモービルアンテナでローディングコイルが良く使われる訳は？ A. To improve reception B. To lower the losses C. To lower the Q D. To tune out the capacitive reactance 　　容量性リアクタンスをキャンセルするため。 E9D17 (D) What is an advantage of using a trap antenna? トラップアンテナを使う利点とは？ A. It has high directivity in the higher-frequency bands B. It has high gain C. It minimizes harmonic radiation D. It may be used for multi-band operation 　　マルチバンド運用に使える。 E9D18 (B) What happens at the base feed-point of a fixed length HF mobile antenna as the frequency of operation is lowered? 運用周波数を下げると、固定長ＨＦモービルアンテナの基部給電点に何が起こるか？ A. The resistance decreases and the capacitive reactance decreases B. The resistance decreases and the capacitive reactance increases 　　抵抗が下がり、容量性リアクタンスが上がる。 C. The resistance increases and the capacitive reactance decreases D. The resistance increases and the capacitive reactance increases E9D19 (B) What is the beamwidth of a symmetrical pattern antenna with a gain of 30 dB as compared to an isotropic radiator? 等方向性輻射器と比較してゲイン３０ｄＢの対称パターンアンテナのビーム幅は？ A. 3.2 degrees B. 6.4 degrees C. 37 degrees D. 60 degrees E9D20 (C) What is the beamwidth of a symmetrical pattern antenna with a gain of 15 dB as compared to an isotropic radiator? 等方向性輻射器と比較してゲイン１５ｄＢの対称パターンアンテナのビーム幅は？ A. 72 degrees B. 52 degrees C. 36 degrees D. 3.6 degrees E9D21 (D) What is the beamwidth of a symmetrical pattern antenna with a gain of 12 dB as compared to an isotropic radiator? 等方向性輻射器と比較してゲイン１２ｄＢの対称パターンアンテナのビーム幅は？ A. 34 degrees B. 45 degrees C. 58 degrees D. 51 degrees E9E Matching antennas to feed lines; characteristics of open and shorted feed lines: 1/8 wavelength; 1/4 wavelength; 1/2 wavelength; feed lines: coax versus open-wire; velocity factor; electrical length; transformation characteristics of line terminated in impedance not equal to characteristic impedance; use of antenna analyzers E9E01 (B) What system matches a high-impedance transmission line to a lower impedance antenna by connecting the line to the driven element in two places, spaced a fraction of a wavelength each side of element center? 給電線を輻射エレメントの中心から両側に波長より小さく離した２箇所に接続する事で 高インピーダンスの給電線を低インピーダンスアンテナに整合させるシステムは？ A. The gamma matching system B. The delta matching system 　　デルタマッチング。 C. The omega matching system D. The stub matching system E9E02 (A) What system matches an unbalanced feed line to an antenna by feeding the driven element both at the center of the element and at a fraction of a wavelength to one side of center? 輻射エレメントの中心と中心より波長より小さく片側に離して給電する事で 不平衡給電線をアンテナへ整合させるシステムは？ A. The gamma matching system 　　ガンママッチング。 B. The delta matching system C. The omega matching system D. The stub matching system E9E03 (D) What impedance matching system uses a short perpendicular section of transmission line connected to the feed line near the antenna? アンテナの近くの給電線に短い給電線片を垂直に接続する事でインピーダンスの 整合を取るシステムは？ A. The gamma matching system B. The delta matching system C. The omega matching system D. The stub matching system 　　スタブマッチング。 E9E04 (B) What should be the approximate capacitance of the resonating capacitor in a gamma matching circuit on a Yagi beam antenna for the 20-meter band? ２０ｍ帯の八木ビームアンテナでガンママッチング回路の共振コンデンサーの キャパシタンスは？ A. 14 pF B. 140 pF C. 1400 pF D. 0.14 pF E9E05 (D) What should be the approximate capacitance of the resonating capacitor in a gamma matching circuit on a Yagi beam antenna for the 10-meter band? １０ｍ帯の八木ビームアンテナでガンママッチング回路の共振コンデンサーの キャパシタンスは？ A. 0.2 pF B. 0.7 pF C. 700 pF D. 70 pF E9E06 (D) What is the velocity factor of a transmission line? 給電線の速度係数とは？ A. The ratio of the characteristic impedance of the line to the terminating impedance B. The index of shielding for coaxial cable C. The velocity of the wave on the transmission line multiplied by the velocity of light in a vacuum D. The velocity of the wave on the transmission line divided by the velocity of light in a vacuum 　　給電線上の波の速度を真空中の光の速度で割ったもの。 E9E07 (C) What determines the velocity factor in a transmission line? 給電線の速度係数を決めるのは？ A. The termination impedance B. The line length C. Dielectrics in the line 　　給電線の誘電体。 D. The center conductor resistivity E9E08 (D) Why is the physical length of a coaxial cable transmission line shorter than its electrical length? 同軸ケーブル給電線の物理的長さが電気的長さより短いのは？ A. Skin effect is less pronounced in the coaxial cable B. The characteristic impedance is higher in a parallel feed line C. The surge impedance is higher in a parallel feed line D. RF energy moves slower along the coaxial cable 　　ＲＦエネルギーは同軸ケーブル上を遅く移動するから。 E9E09 (B) What is the typical velocity factor for a coaxial cable with polyethylene dielectric? ポリエチレン誘電体を使った同軸ケーブルの速度係数は？ A. 2.70 B. 0.66 C. 0.30 D. 0.10 E9E10 (C) What would be the physical length of a typical coaxial transmission line that is electrically one-quarter wavelength long at 14.1 MHz? (Assume a velocity factor of 0.66.) １４．１ＭＨｚで電気的に１／４波長の同軸給電線の物理的な長さは （速度係数０．６６として）？ A. 20 meters B. 2.3 meters C. 3.5 meters D. 0.2 meters E9E11 (C) What is the physical length of a parallel conductor feed line that is electrically one-half wavelength long at 14.10 MHz? (Assume a velocity factor of 0.95.) １４．１０ＭＨｚで電気的に１／２波長の平行導線給電線の物理的な長さは （速度係数０．９５として）？ A. 15 meters B. 20 meters C. 10 meters D. 71 meters E9E12 (B) What parameter best describes the interactions at the load end of a mismatched transmission line? 整合の取れていない給電線の負荷端での相互作用を表すパラメーターは？ A. Characteristic impedance B. Reflection coefficient 　　反射係数。 C. Velocity factor D. Dielectric Constant E9E13 (D) Which of the following measurements describes a mismatched transmission line? 整合の取れていない給電線を表す測定値は？ A. An SWR less than 1:1 B. A reflection coefficient greater than 1 C. A dielectric constant greater than 1 D. An SWR greater than 1:1 　　ＳＷＲが１：１以上。 E9E14 (A) What characteristic will 450-ohm ladder line have at 50 MHz, as compared to 0.195-inch-diameter coaxial cable (such as RG-58)? φ０．１９５インチの同軸ケーブル（ＲＧ−５８等）と比べて、４５０Ω梯子線の ５０ＭＨｚでの特性は？ A. Lower loss in dB/100 feet 　　ｄＢ／１００フィートのレベルで損失が小さくなる。 B. Higher SWR C. Smaller reflection coefficient D. Lower velocity factor E9E15 (A) What is the term for the ratio of the actual velocity at which a signal travels through a transmission line to the speed of light in a vacuum? 実際に給電線の中を信号が伝わる速度と真空中の光の速度の比率の呼び名は？ A. Velocity factor 　　速度係数。 B. Characteristic impedance C. Surge impedance D. Standing wave ratio E9E16 (B) What would be the physical length of a typical coaxial transmission line that is electrically one-quarter wavelength long at 7.2 MHz? (Assume a velocity factor of 0.66.) ７．２ＭＨｚで電気的に１／４波長の同軸給電線の物理的な長さは （速度係数０．６６として）？ A. 10 meters B. 6.9 meters C. 24 meters D. 50 meters E9E17 (C) What kind of impedance does a 1/8-wavelength transmission line present to a generator when the line is shorted at the far end? 末端で短絡させた１／８波長送電線が発電機に示すインピーダンスは？ A. A capacitive reactance B. The same as the characteristic impedance of the line C. An inductive reactance 　　誘導性リアクタンス。 D. The same as the input impedance to the final generator stage E9E18 (C) What kind of impedance does a 1/8-wavelength transmission line present to a generator when the line is open at the far end? 末端を開いた１／８波長送電線が発電機に示すインピーダンスは？ A. The same as the characteristic impedance of the line B. An inductive reactance C. A capacitive reactance 　　容量性リアクタンス。 D. The same as the input impedance of the final generator stage E9E19 (B) What kind of impedance does a 1/4-wavelength transmission line present to a generator when the line is open at the far end? 末端を開いた１／４波長送電線が発電機に示すインピーダンスは？ A. A very high impedance B. A very low impedance 　　非常に小さなインピーダンス。 C. The same as the characteristic impedance of the line D. The same as the input impedance to the final generator stage E9E20 (A) What kind of impedance does a 1/4-wavelength transmission line present to a generator when the line is shorted at the far end? 末端で短絡させた１／４波長送電線が発電機に示すインピーダンスは？ A. A very high impedance 　　非常に大きなインピーダンス。 B. A very low impedance C. The same as the characteristic impedance of the transmission line D. The same as the generator output impedance E9E21 (B) What kind of impedance does a 1/2-wavelength transmission line present to a generator when the line is shorted at the far end? 末端で短絡させた１／２波長送電線が発電機に示すインピーダンスは？ A. A very high impedance B. A very low impedance 　　非常に小さなインピーダンス。 C. The same as the characteristic impedance of the line D. The same as the output impedance of the generator E9E22 (A) What kind of impedance does a 1/2-wavelength transmission line present to a generator when the line is open at the far end? 末端を開いた１／２波長送電線が発電機に示すインピーダンスは？ A. A very high impedance 　　非常に大きなインピーダンス。 B. A very low impedance C. The same as the characteristic impedance of the line D. The same as the output impedance of the generator 1