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US Amateur Radio - General (Element 3, 2023-2027) Practice Test

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1. - G0A05

What must you do if an evaluation of your station shows that the RF energy radiated by your station exceeds permissible limits for possible human absorption?

SelectAnswer
AFile an Environmental Impact Statement (EIS-97) with the FCC
BAll these choices are correct
CSecure written permission from your neighbors to operate above the controlled MPE limits
DTake action to prevent human exposure to the excessive RF fields

2. - G0B01

Which wire or wires in a four-conductor 240 VAC circuit should be attached to fuses or circuit breakers?

SelectAnswer
AOnly the hot wires
BOnly the neutral wire
COnly the ground wire
DAll wires

3. - G1A07

On which amateur frequencies in the 10-meter band may stations with a General class control operator transmit CW emissions?

SelectAnswer
A28.000 MHz to 28.300 MHz only
BThe entire band
C28.025 MHz to 28.300 MHz only
D28.000 MHz to 28.025 MHz only

4. - G1B10

What is the power limit for beacon stations?

SelectAnswer
A20 watts PEP output
B200 watts PEP output
C100 watts PEP output
D10 watts PEP output

5. - G1C10

What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 10-meter band?

SelectAnswer
A19.6 kilobaud
B300 baud
C56 kilobaud
D1200 baud

6. - G1D10

What is the minimum age that one must be to qualify as an accredited Volunteer Examiner?

SelectAnswer
A18 years
B21 years
CThere is no age limit
D16 years

7. - G1E01

Which of the following would disqualify a third party from participating in sending a message via an amateur station?

SelectAnswer
AThe third party’s amateur license has been revoked and not reinstated
BAll these choices are correct
CThe third party is not a US citizen
DThe third party is speaking in a language other than English

8. - G2A10

Which of the following statements is true of VOX operation versus PTT operation?

SelectAnswer
AIt provides more power output
BIt allows “hands free” operation
CThe received signal is more natural sounding
DIt occupies less bandwidth

9. - G2B06

How can you avoid harmful interference on an apparently clear frequency before calling CQ on CW or phone?

SelectAnswer
ASend “QSY” on CW or if using phone, announce “the frequency is in use,” then give your call sign and listen for a response
BSend “QRL?” on CW, followed by your call sign; or, if using phone, ask if the frequency is in use, followed by your call sign
CSend the letter “V” in Morse code several times and listen for a response, or say “test” several times and listen for a response
DListen for 2 minutes before calling CQ

10. - G2C11

What does the Q signal “QRV” mean?

SelectAnswer
AI am ready to receive
BI am quitting for the day
CYou are sending too fast
DThere is interference on the frequency

11. - G2D05

Which of the following indicates that you are looking for an HF contact with any station?

SelectAnswer
ASay “QTC” followed by “this is” and your call sign -- if no answer, change frequency and repeat
BSign your call sign once, followed by the words “listening for a call” -- if no answer, change frequency and repeat
CRepeat “CQ” a few times, followed by “this is,” then your call sign a few times, then pause to listen, repeat as necessary
DTransmit an unmodulated carried for approximately 10 seconds, followed by “this is” and your call sign, and pause to listen -- repeat as necessary

12. - G2E07

Which of the following is required when using FT8?

SelectAnswer
AReceiver attenuator set to -12 dB
BA special hardware modem
CComputer time accurate to within approximately 1 second
DA vertically polarized antenna

13. - G3A09

How can high geomagnetic activity benefit radio communications?

SelectAnswer
ACreates auroras that can reflect VHF signals
BReduce long delayed echoes
CImprove HF long path propagation
DIncreases signal strength for HF signals passing through the polar regions

14. - G3B03

Which frequency will have the least attenuation for long-distance skip propagation?

SelectAnswer
AJust above the critical frequency
BJust above the LUF
CJust below the MUF
DJust below the critical frequency

15. - G3C03

Why is skip propagation via the F2 region longer than that via the other ionospheric regions?

SelectAnswer
ABecause of temperature inversions
BBecause of the Doppler effect
CBecause it is the highest
DBecause it is the densest

16. - G4A13

What is the purpose of using a receive attenuator?

SelectAnswer
ATo reduce the transmitter power when driving a linear amplifier
BTo reduce power consumption when operating from batteries
CTo reduce excessive audio level on strong signals
DTo prevent receiver overload from strong incoming signals

17. - G4B13

Which of the following can be measured with an antenna analyzer?

SelectAnswer
APower output from a transmitter
BFront-to-back ratio of an antenna
CGain of a directional antenna
DImpedance of coaxial cable

18. - G4C11

What technique helps to minimize RF “hot spots” in an amateur station?

SelectAnswer
AUsing surge suppressor power outlets
BBonding all equipment enclosures together
CPlacing low-pass filters on all feed lines
DBuilding all equipment in a metal enclosure

19. - G4D04

What does an S meter measure?

SelectAnswer
ATransmitter power output
BCarrier suppression
CImpedance
DReceived signal strength

20. - G4E10

Why should a series diode be connected between a solar panel and a storage battery that is being charged by the panel?

SelectAnswer
ATo prevent discharge of the battery through the panel during times of low or no illumination
BTo prevent overload by regulating the charging voltage
CTo prevent damage to the battery due to excessive voltage at high illumination levels
DTo limit the current flowing from the panel to a safe value

21. - G5A12

What occurs in an LC circuit at resonance?

SelectAnswer
AResistance is cancelled
BThe circuit radiates all its energy in the form of radio waves
CCurrent and voltage are equal
DInductive reactance and capacitive reactance cancel

22. - G5B01

What dB change represents a factor of two increase or decrease in power?

SelectAnswer
AApproximately 9 dB
BApproximately 3 dB
CApproximately 6 dB
DApproximately 2 dB

23. - G5C02

What is the output voltage if an input signal is applied to the secondary winding of a 4:1 voltage step-down transformer instead of the primary winding?

SelectAnswer
AAdditional resistance must be added in parallel with the secondary to prevent overload
BAdditional resistance must be added in series with the primary to prevent overload
CThe input voltage is divided by 4
DThe input voltage is multiplied by 4

24. - G6A03

What is the approximate forward threshold voltage of a germanium diode?

SelectAnswer
A0.3 volts
B0.1 volt
C0.7 volts
D1.0 volts

25. - G6B11

What is an SMA connector?

SelectAnswer
AA small threaded connector suitable for signals up to several GHz
BA type of push-on connector intended for high-voltage applications
CA connector designed for serial multiple access signals
DA type-S to type-M adaptor

26. - G7A10

Which symbol in figure G7-1 represents a Zener diode?

SelectAnswer
ASymbol 4
BSymbol 5
CSymbol 1
DSymbol 11

27. - G7B05

How many states does a 3-bit binary counter have?

SelectAnswer
A16
B8
C3
D6

28. - G7C06

Which of the following is an advantage of a digital signal processing (DSP) filter compared to an analog filter?

SelectAnswer
AThe DSP filter is much more effective at VHF frequencies
BMixing products are greatly reduced
CA wide range of filter bandwidths and shapes can be created
DFewer digital components are required

29. - G8A12

What is QPSK modulation?

SelectAnswer
AModulation using quasi-parallel to serial conversion to reduce bandwidth
BModulation in which digital data is transmitted using 0-, 90-, 180- and 270-degrees phase shift to represent pairs of bits
CModulation using quadra-pole sideband keying to generate spread spectrum signals
DModulation using Fast Fourier Transforms to generate frequencies at the first, second, third, and fourth harmonics of the carrier frequency to improve noise immunity

30. - G8B07

What is the frequency deviation for a 12.21 MHz reactance modulated oscillator in a 5 kHz deviation, 146.52 MHz FM phone transmitter?

SelectAnswer
A101.75 Hz
B5 kHz
C416.7 Hz
D60 kHz

31. - G8C11

How are the two separate frequencies of a Frequency Shift Keyed (FSK) signal identified?

SelectAnswer
ADot and dash
BOn and off
CHigh and low
DMark and space

32. - G9A06

In what units is RF feed line loss usually expressed?

SelectAnswer
ADecibels per 100 feet
BDecibels per 1,000 feet
COhms per 100 feet
DOhms per 1,000 feet

33. - G9B01

What is a characteristic of a random-wire HF antenna connected directly to the transmitter?

SelectAnswer
AIt produces only vertically polarized radiation
BStation equipment may carry significant RF current
CIt is more effective on the lower HF bands than on the higher bands
DIt must be longer than 1 wavelength

34. - G9C12

Which of the following is a characteristic of using a gamma match with a Yagi antenna?

SelectAnswer
AIt is useful for matching multiband antennas
BIt does not require any inductors or capacitors
CAll these choices are correct
DIt does not require the driven element to be insulated from the boom

35. - G9D08

How does a “screwdriver” mobile antenna adjust its feed point impedance?

SelectAnswer
ABy varying the base loading inductance
BBy extending and retracting the whip
CBy varying its body capacitance
DBy deploying a capacitance hat

Figure G7-1