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Text File | 1992-01-26 | 10KB | 315 lines

FCC NOVICE Exam Question Pool. Subelement 2G. Practical Circuits. 2 Questions. --------------------------------------------------- 2G 1-1.1 B What is the unlabeled block (?) in this diagram? ANTENNA \│/ FEED LINE─│ ┌─────────────┐ ┌────┴────┐ ┌───────┐ │ TRANSMITTER ├─────┤ ? ├─────┤ DUMMY │ │ │ │ │ │ LOAD │ └──────┬──────┘ └─────────┘ └───────┘ │ ┌────┴────┐ A. A terminal-node controller │ POWER │ B. An antenna switch │ SUPPLY │ C. A telegraph key └─────────┘ D. A TR switch 2G 1-1.2 C What is the unlabeled block (?) in this diagram? ANTENNA \│/ FEED LINE─│ ┌─────────────┐ ┌───┴────┐ ┌──────────┐ │ ? ├─────┤ TR ├─────┤ RECEIVER │ │ │ │ SWITCH │ │ │ └──────┬──────┘ └────────┘ └──────────┘ │ ┌────┴────┐ A. A microphone │ POWER │ B. A receiver │ SUPPLY │ C. A transmitter └─────────┘ D. An SWR meter 2G 1-1.3 D What is the unlabeled block (?) in this diagram? ANTENNA \│/ FEED LINE─│ ┌─────────────┐ ┌────┴────┐ ┌──────────┐ │ TRANSMITTER ├─────┤ TR ├─────┤ ? │ │ │ │ SWITCH │ │ │ └──────┬──────┘ └─────────┘ └──────────┘ │ ┌────┴────┐ A. A key click filter │ KEY │ B. An antenna tuner │ │ C. A power supply └─────────┘ D. A receiver 2G 1-1.4 A What is the unlabeled block (?) in this diagram? ┌────────┐ ┌─┤ DIPOLE │ ┌─────────┐ ┌────────┐ ┌─────────┐ │ └────────┘ │ │ │ SWR │ │ ANTENNA ├─┘ ┌────────┐ │ ? ├────┤ BRIDGE ├────┤ SWITCH ├───┤ BEAM │ │ │ │ │ │ ├┐ └────────┘ └─────────┘ └────────┘ └─────────┘│ ┌─────────┐ └──┤ DUMMY │ A. Transceiver │ LOAD │ B. A TR switch └─────────┘ C. An antenna tuner D. A modem 2G 1-1.5 D In block diagram 2G-1, which symbol represents an antenna? \ │ / ┌─────────┐ ┌─────────┐ ┌─────────┐ \│/ 4 │ │ │ │ │ │ │ │ 1 ├────┤ 2 ├────┤ 3 ├──────┘ │ │ │ │ │ │ └─────────┘ └─────────┘ └─────────┘ . A. 1 B. 2 FIGURE 2G-1 C. 3 D. 4 2G 1-2.1 B What is the unlabeled block (?) in this diagram? ┌────────┐ ┌─┤ DIPOLE │ ┌───────────┐ ┌────────┐ ┌─────────┐ │ └────────┘ │TRANSMITTER│ │ SWR │ │ ├─┘ ┌────────┐ │ ├───┤ BRIDGE ├────┤ ? ├───┤ BEAM │ │ │ │ │ │ ├┐ └────────┘ └───────────┘ └────────┘ └─────────┘│ ┌─────────┐ └──┤ DUMMY │ A. A pi network │ LOAD │ B. An antenna switch └─────────┘ C. A key click filter D. A mixer 2G 1-2.2 A What is the unlabeled block (?) in this diagram? A. A TR switch ANTENNA B. A variable frequency oscillator ┌─────────┐ \│/ C. A linear amplifier ┌────────┤ ANTENNA ├─────┘ D. A microphone │ │ TUNER │ │ └─────────┘ ┌────┴────┐ │ SWR │ │ BRIDGE │ └────┬────┘ ┌───────┐ ┌─────────────┐ ┌────┴────┐ ┌──────────┐ │ KEY ├───┤ TRANSMITTER ├───┤ ? ├───┤ RECEIVER │ │ │ │ │ │ │ │ │ └───────┘ └─────────────┘ └─────────┘ └──────────┘ 2G 1-2.3 B What is the unlabeled block (?) in this diagram? ANTENNA \│/ │ FEED LINE─│ ┌───────────┐ ┌─────────┐ ┌─────────┐ │ │ │ │ SWR │ │ │ │ │TRANSCEIVER├────┤ BRIDGE ├────┤ ? ├──────┘ │ │ │ │ │ │ └───────────┘ └─────────┘ └─────────┘ . A. An antenna switch B. An impedance-matching network C. A key click filter D. A terminal-node controller 2G 1-2.4 D In block diagram 2G-1, if component 1 is a transceiver and component 2 is an SWR meter, what is component 3? A. A power supply B. A receiver C. A microphone D. An impedance-matching device \ │ / ┌─────────┐ ┌─────────┐ ┌─────────┐ \│/ 4 │ │ │ │ │ │ │ │ 1 ├────┤ 2 ├────┤ 3 ├──────┘ │ │ │ │ │ │ └─────────┘ └─────────┘ └─────────┘ . FIGURE 2G-1 2G 1-2.5 D In block diagram 2G-1, if component 2 is an SWR meter and component 3 is an impedance-matching device, what is component 1? A. A power supply B. An antenna C. An antenna switch D. A transceiver \ │ / ┌─────────┐ ┌─────────┐ ┌─────────┐ \│/ 4 │ │ │ │ │ │ │ │ 1 ├────┤ 2 ├────┤ 3 ├──────┘ │ │ │ │ │ │ └─────────┘ └─────────┘ └─────────┘ . FIGURE 2G-1 2G 2.1 B In an amateur station designed for Morse radiotelegraph operation, what station accessory will you need to go with your transmitter? A. A terminal-node controller B. A telegraph key C. An SWR meter D. An antenna switch 2G 2.2 C What is the unlabeled block (?) in this diagram of a Morse telegraphy station? A. A sidetone oscillator ANTENNA B. A microphone \│/ C. A telegraph key │ D. A DTMF keypad FEED LINE───│ ┌────┴────┐ │ SWR │ │ BRIDGE │ └────┬────┘ │ ┌───────┐ ┌─────────────┐ ┌────┴────┐ ┌──────────┐ │ ? ├───┤ TRANSMITTER ├───┤ TR ├───┤ RECEIVER │ │ │ │ │ │ SWITCH │ │ │ └───────┘ └─────────────┘ └─────────┘ └──────────┘ 2G 2.3 C What station accessory do many amateurs use to help form good Morse code characters? A. A sidetone oscillator B. A key-click filter C. An electronic keyer D. A DTMF keypad 2G 3.1 D In an amateur station designed for radio-telephone operation, what station accessory will you need to go with your transmitter? A. A splatter filter B. A terminal-voice controller C. A receiver audio filter D. A microphone 2G 3.2 D What is the unlabeled block (?) in this diagram of a radiotelephone station? A. A splatter filter B. A terminal-voice controller ANTENNA C. A receiver audio filter \│/ D. A microphone │ FEED LINE───│ │ ┌─────┐ ┌─────────────┐ ┌────────┐ ┌────┴────┐ ┌──────────┐ │ ? ├──┤ TRANSMITTER ├──┤ SWR ├──┤ TR ├──┤ RECEIVER │ │ │ │ │ │ BRIDGE │ │ SWITCH │ │ │ └─────┘ └─────────────┘ └────────┘ └─────────┘ └──────────┘ 2G 4.1 A In an amateur station designed for radioteletype operation, what station accessories will you need to go with your transmitter? A. A modem and a teleprinter or computer system B. A computer, a printer and a RTTY refresh unit C. A terminal-node controller D. A modem, a monitor and a DTMF keypad 2G 4.2 C What is the unlabeled block (?) in this diagram? A. An RS-232 interface B. SWR bridge ANTENNA C. Modem \│/ D. Terminal-network controller │ FEED LINE───│ │ ┌──────────┐ ┌─────────┐ ┌───────────┐ │ │ COMPUTER ├──┤ ? ├──┤TRANSCEIVER├───┘ │ SYSTEM │ │ │ │ │ └──────────┘ └─────────┘ └───────────┘ 2G 5.1 A In a packet-radio station, what device connects between the radio transceiver and the computer terminal? A. A terminal-node controller B. An RS-232 interface C. A terminal refresh unit D. A tactical network control system 2G 5.2 A What is the unlabeled block (?) in this diagram of a packet-radio station? A. A terminal-node controller B. An RS-232 interface ANTENNA C. A terminal refresh unit \│/ D. A tactical network control system │ FEED LINE───│ │ ┌──────────┐ ┌─────────┐ ┌───────────┐ │ │ COMPUTER ├──┤ ? ├──┤TRANSCEIVER├───┘ │ SYSTEM │ │ │ │ │ └──────────┘ └─────────┘ └───────────┘ 2G 5.3 C Where does a terminal-node controller connect in an amateur packet-radio station? A. Between the antenna and the radio B. Between the computer and the monitor C. Between the computer or terminal and the radio D. Between the keyboard and the computer -------------------------------------------------- End of Subelement 2G.