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

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

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1. - G0A06

What must you do if your station fails to meet the FCC RF exposure exemption criteria?

Select	Answer
A	Contact the FCC for permission to transmit
B	Use an FCC-approved band-pass filter
C	Perform an RF Exposure Evaluation in accordance with FCC OET Bulletin 65
D	Perform an RF exposure evaluation in accordance with World Meteorological Organization guidelines

2. - G0B04

Where should the station’s lightning protection ground system be located?

Select	Answer
A	Outside the building
B	Parallel to the water supply line
C	Next to the closest power pole
D	As close to the station equipment as possible

3. - G1A07

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

Select	Answer
A	28.025 MHz to 28.300 MHz only
B	28.000 MHz to 28.300 MHz only
C	The entire band
D	28.000 MHz to 28.025 MHz only

4. - G1B11

Who or what determines “good engineering and good amateur practice,” as applied to the operation of an amateur station in all respects not covered by the Part 97 rules?

Select	Answer
A	The IEEE
B	The control operator
C	The ITU
D	The FCC

5. - G1C02

What is the maximum transmitter power an amateur station may use on the 12-meter band?

Select	Answer
A	200 watts PEP output
B	50 watts PEP output
C	An effective radiated power equivalent to 100 watts from a half-wave dipole
D	1500 watts PEP output

6. - G1D08

Which of the following criteria must be met for a non-US citizen to be an accredited Volunteer Examiner?

Select	Answer
A	The person must hold an FCC granted amateur radio license of General class or above
B	None of these choices is correct; a non-US citizen cannot be a Volunteer Examiner
C	The person must be a resident of the US for a minimum of 5 years
D	The person’s home citizenship must be in ITU region 2

7. - G1E05

What are the restrictions on messages sent to a third party in a country with which there is a Third-Party Agreement?

Select	Answer
A	They must relate to emergencies or disaster relief
B	They must relate to amateur radio, or remarks of a personal character, or messages relating to emergencies or disaster relief
C	They must be for other licensed amateurs
D	The message must be limited to no longer than 1 minute in duration and the name of the third party must be recorded in the station log

8. - G2A10

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

Select	Answer
A	The received signal is more natural sounding
B	It allows “hands free” operation
C	It occupies less bandwidth
D	It provides more power output

9. - G2B05

When selecting an SSB transmitting frequency, what minimum separation should be used to minimize interference to stations on adjacent frequencies?

Select	Answer
A	2 kHz to 3 kHz
B	150 Hz to 500 Hz
C	5 Hz to 50 Hz
D	Approximately 6 kHz

10. - G2C09

What does the Q signal “QSL” mean?

Select	Answer
A	I have received and understood
B	We have already confirmed the contact
C	We have worked before
D	Send slower

11. - G2D10

What is QRP operation?

Select	Answer
A	Remote piloted model control
B	Traffic relay procedure net operation
C	Transmission using Quick Response Protocol
D	Low-power transmit operation

12. - G2E08

In what segment of the 20-meter band are most digital mode operations commonly found?

Select	Answer
A	Between 14.070 MHz and 14.100 MHz
B	In the middle of the CW segment, near 14.100 MHz
C	At the bottom of the slow-scan TV segment, near 14.230 MHz
D	At the top of the SSB phone segment, near 14.325 MHz

13. - G3A14

How is long distance radio communication usually affected by the charged particles that reach Earth from solar coronal holes?

Select	Answer
A	VHF/UHF ducting is disturbed
B	HF communication is disturbed
C	HF communication is improved
D	VHF/UHF ducting is improved

14. - G3B01

What is a characteristic of skywave signals arriving at your location by both short-path and long-path propagation?

Select	Answer
A	A slightly delayed echo might be heard
B	Periodic fading approximately every 10 seconds
C	Signal strength increased by 3 dB
D	The signal might be cancelled causing severe attenuation

15. - G3C09

What type of propagation allows signals to be heard in the transmitting station’s skip zone?

Select	Answer
A	Faraday rotation
B	Chordal hop
C	Scatter
D	Short-path

16. - G4A01

What is the purpose of the notch filter found on many HF transceivers?

Select	Answer
A	To remove interfering splatter generated by signals on adjacent frequencies
B	To eliminate receiver interference from impulse noise sources
C	To reduce interference from carriers in the receiver passband
D	To restrict the transmitter voice bandwidth

17. - G4B03

Which of the following is the best instrument to use for checking the keying waveform of a CW transmitter?

Select	Answer
A	A field strength meter
B	A sidetone monitor
C	An oscilloscope
D	A wavemeter

18. - G4C12

Why must all metal enclosures of station equipment be grounded?

Select	Answer
A	It prevents a blown fuse in the event of an internal short circuit
B	It prevents signal overload
C	It ensures that the neutral wire is grounded
D	It ensures that hazardous voltages cannot appear on the chassis

19. - G4D02

How does a speech processor affect a single sideband phone signal?

Select	Answer
A	It increases average power
B	It increases peak power
C	It reduces harmonic distortion
D	It reduces intermodulation distortion

20. - G4E04

Why should DC power for a 100-watt HF transceiver not be supplied by a vehicle’s auxiliary power socket?

Select	Answer
A	The socket’s wiring may be inadequate for the current drawn by the transceiver
B	Drawing more than 50 watts from this socket could cause the engine to overheat
C	The DC polarity of the socket is reversed from the polarity of modern HF transceivers
D	The socket is not wired with an RF-shielded power cable

21. - G5A01

What happens when inductive and capacitive reactance are equal in a series LC circuit?

Select	Answer
A	Resonance causes impedance to be very low
B	Impedance is equal to the arithmetic mean of the inductance and capacitance
C	Impedance is equal to the geometric mean of the inductance and capacitance
D	Resonance causes impedance to be very high

22. - G5B03

How many watts of electrical power are consumed if 400 VDC is supplied to an 800-ohm load?

Select	Answer
A	3200 watts
B	200 watts
C	0.5 watts
D	400 watts

23. - G5C01

What causes a voltage to appear across the secondary winding of a transformer when an AC voltage source is connected across its primary winding?

Select	Answer
A	Capacitive coupling
B	Mutual capacitance
C	Displacement current coupling
D	Mutual inductance

24. - G6A12

What is the primary purpose of a screen grid in a vacuum tube?

Select	Answer
A	To reduce grid-to-plate capacitance
B	To decrease plate resistance
C	To increase the control grid resistance
D	To increase efficiency

25. - G6B04

What is a typical upper frequency limit for low SWR operation of 50-ohm BNC connectors?

Select	Answer
A	4 GHz
B	50 MHz
C	500 MHz
D	40 GHz

26. - G7A13

Which symbol in Figure G7-1 represents a tapped inductor?

Select	Answer
A	Symbol 11
B	Symbol 1
C	Symbol 7
D	Symbol 6

27. - G7B09

What determines the frequency of an LC oscillator?

Select	Answer
A	The inductance and capacitance in the tank circuit
B	The time delay of the lag circuit
C	The number of stages in the counter
D	The number of stages in the divider

28. - G7C03

What is one reason to use an impedance matching transformer at a transmitter output?

Select	Answer
A	To minimize transmitter power output
B	To present the desired impedance to the transmitter and feed line
C	To reduce power supply ripple
D	To minimize radiation resistance

29. - G8A11

What is the modulation envelope of an AM signal?

Select	Answer
A	Spurious signals that envelop nearby frequencies
B	The bandwidth of the modulated signal
C	The waveform created by connecting the peak values of the modulated signal
D	The carrier frequency that contains the signal

30. - G8B03

What is another term for the mixing of two RF signals?

Select	Answer
A	Phase inversion
B	Synthesizing
C	Heterodyning
D	Frequency inversion

31. - G8C04

Which of the following describes Baudot code?

Select	Answer
A	A 7-bit code with start, stop, and parity bits
B	A 5-bit code with additional start and stop bits
C	A code using error detection and correction
D	A code using SELCAL and LISTEN

32. - G9A11

What is the effect of transmission line loss on SWR measured at the input to the line?

Select	Answer
A	Higher loss increases the accuracy of SWR measured at the input to the line
B	Higher loss increases SWR measured at the input to the line
C	Higher loss reduces SWR measured at the input to the line
D	Transmission line loss does not affect the SWR measurement

33. - G9B02

Which of the following is a common way to adjust the feed point impedance of an elevated quarter-wave ground-plane vertical antenna to be approximately 50 ohms?

Select	Answer
A	Slope the radials upward
B	Lengthen the radials beyond one wavelength
C	Coil the radials
D	Slope the radials downward

34. - G9C05

What is the primary effect of increasing boom length and adding directors to a Yagi antenna?

Select	Answer
A	Resonant frequency is lower
B	Gain increases
C	Beamwidth increases
D	Front-to-back ratio decreases

35. - G9D07

Which of the following describes a log-periodic antenna?

Select	Answer
A	Element length and spacing vary logarithmically along the boom
B	SWR varies periodically as a function of boom length
C	Gain varies logarithmically as a function of frequency
D	Impedance varies periodically as a function of frequency

Figure G7-1