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. - G0A04

What does “time averaging” mean when evaluating RF radiation exposure?

Select	Answer
A	The total RF exposure averaged over a certain period
B	The total time of the exposure
C	The average amount of power developed by the transmitter over a specific 24-hour period
D	The average time it takes RF radiation to have any long-term effect on the body

2. - G0B04

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

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

3. - G1A03

On which of the following bands is image transmission prohibited?

Select	Answer
A	20 meters
B	12 meters
C	160 meters
D	30 meters

4. - G1B05

Which of the following one-way transmissions are permitted?

Select	Answer
A	All these choices are correct
B	Transmissions to assist with learning the International Morse code
C	Unidentified test transmissions of less than 10 seconds in duration
D	Regular transmissions offering equipment for sale, if intended for amateur radio use

5. - G1C01

What is the maximum transmitter power an amateur station may use on 10.140 MHz?

Select	Answer
A	2000 watts PEP output
B	1500 watts PEP output
C	200 watts PEP output
D	1000 watts PEP output

6. - G1D01

Who may receive partial credit for the elements represented by an expired amateur radio license?

Select	Answer
A	Any person who previously held an amateur license issued by another country, but only if that country has a current reciprocal licensing agreement with the FCC
B	Any person who can demonstrate that they once held an FCC-issued General, Advanced, or Amateur Extra class license that was not revoked by the FCC
C	Only persons who once held an FCC issued Novice, Technician, or Technician Plus license
D	Anyone who held an FCC-issued amateur radio license that expired not less than 5 and not more than 15 years ago

7. - G1E06

The frequency allocations of which ITU region apply to radio amateurs operating in North and South America?

Select	Answer
A	Region 4
B	Region 3
C	Region 1
D	Region 2

8. - G2A12

What control is typically adjusted for proper ALC setting on a single sideband transceiver?

Select	Answer
A	Antenna inductance or capacitance
B	RF clipping level
C	Transmit audio or microphone gain
D	Attenuator level

9. - G2B01

Which of the following is true concerning access to frequencies?

Select	Answer
A	Nets have priority
B	QSOs in progress have priority
C	Contest operations should yield to non-contest use of frequencies
D	Except during emergencies, no amateur station has priority access to any frequency

10. - G2C11

What does the Q signal “QRV” mean?

Select	Answer
A	I am ready to receive
B	There is interference on the frequency
C	I am quitting for the day
D	You are sending too fast

11. - G2D05

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

Select	Answer
A	Repeat “CQ” a few times, followed by “this is,” then your call sign a few times, then pause to listen, repeat as necessary
B	Say “QTC” followed by “this is” and your call sign -- if no answer, change frequency and repeat
C	Sign your call sign once, followed by the words “listening for a call” -- if no answer, change frequency and repeat
D	Transmit an unmodulated carried for approximately 10 seconds, followed by “this is” and your call sign, and pause to listen -- repeat as necessary

12. - G2E13

What is another name for a Winlink Remote Message Server?

Select	Answer
A	RJ-45
B	Terminal Node Controller
C	Gateway
D	Printer/Server

13. - G3A02

What effect does a sudden ionospheric disturbance have on the daytime ionospheric propagation?

Select	Answer
A	It enhances propagation on all HF frequencies
B	It disrupts signals on lower frequencies more than those on higher frequencies
C	It disrupts communications via satellite more than direct communications
D	None, because only areas on the night side of the Earth are affected

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	The signal might be cancelled causing severe attenuation
C	Periodic fading approximately every 10 seconds
D	Signal strength increased by 3 dB

15. - G3C03

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

Select	Answer
A	Because of temperature inversions
B	Because of the Doppler effect
C	Because it is the highest
D	Because it is the densest

16. - G4A01

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

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

17. - G4B13

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

Select	Answer
A	Impedance of coaxial cable
B	Gain of a directional antenna
C	Front-to-back ratio of an antenna
D	Power output from a transmitter

18. - G4C01

Which of the following might be useful in reducing RF interference to audio frequency circuits?

Select	Answer
A	Bypass capacitor
B	Reverse-biased diode
C	Bypass inductor
D	Forward-biased diode

19. - G4D03

What is the effect of an incorrectly adjusted speech processor?

Select	Answer
A	Distorted speech
B	All these choices are correct
C	Excess intermodulation products
D	Excessive background noise

20. - G4E10

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

Select	Answer
A	To prevent damage to the battery due to excessive voltage at high illumination levels
B	To prevent overload by regulating the charging voltage
C	To prevent discharge of the battery through the panel during times of low or no illumination
D	To limit the current flowing from the panel to a safe value

21. - G5A06

How does a capacitor react to AC?

Select	Answer
A	As the amplitude of the applied AC increases, the reactance increases
B	As the frequency of the applied AC increases, the reactance increases
C	As the amplitude of the applied AC increases, the reactance decreases
D	As the frequency of the applied AC increases, the reactance decreases

22. - G5B05

How many watts are consumed when a current of 7.0 milliamperes flows through a 1,250-ohm resistance?

Select	Answer
A	Approximately 11 milliwatts
B	Approximately 11 watts
C	Approximately 61 watts
D	Approximately 61 milliwatts

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	Mutual inductance
B	Mutual capacitance
C	Displacement current coupling
D	Capacitive coupling

24. - G6A09

Which of the following describes MOSFET construction?

Select	Answer
A	The gate is separated from the channel by a thin insulating layer
B	The gate is formed by a back-biased junction
C	The source is formed by depositing metal on silicon
D	The source is separated from the drain by a thin insulating layer

25. - G6B03

Which of the following is an advantage of CMOS integrated circuits compared to TTL integrated circuits?

Select	Answer
A	Better suited for power supply regulation
B	Better suited for RF amplification
C	Low power consumption
D	High power handling capability

26. - G7A01

What is the function of a power supply bleeder resistor?

Select	Answer
A	It discharges the filter capacitors when power is removed
B	It acts as a fuse for excess voltage
C	It eliminates ground loop current
D	It removes shock hazards from the induction coils

27. - G7B05

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

Select	Answer
A	16
B	8
C	3
D	6

28. - G7C12

What is the frequency above which a low-pass filter’s output power is less than half the input power?

Select	Answer
A	Neper frequency
B	Rolloff frequency
C	Cutoff frequency
D	Notch frequency

29. - G8A03

What is the name of the process that changes the instantaneous frequency of an RF wave to convey information?

Select	Answer
A	Frequency convolution
B	Frequency modulation
C	Frequency transformation
D	Frequency conversion

30. - G8B03

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

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

31. - G8C04

Which of the following describes Baudot code?

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

32. - G9A01

Which of the following factors determine the characteristic impedance of a parallel conductor feed line?

Select	Answer
A	The radius of the conductors and the frequency of the signal
B	The distance between the centers of the conductors and the length of the line
C	The distance between the centers of the conductors and the radius of the conductors
D	The frequency of the signal and the length of the line

33. - G9B03

Which of the following best describes the radiation pattern of a quarter-wave ground-plane vertical antenna?

Select	Answer
A	Bi-directional in azimuth
B	Hemispherical
C	Isotropic
D	Omnidirectional in azimuth

34. - G9C10

Which of the following can be adjusted to optimize forward gain, front-to-back ratio, or SWR bandwidth of a Yagi antenna?

Select	Answer
A	The number of elements on the boom
B	The spacing of each element along the boom
C	The physical length of the boom
D	All these choices are correct

35. - G9D11

Which of the following is a disadvantage of multiband antennas?

Select	Answer
A	They must be used with an antenna tuner
B	They present low impedance on all design frequencies
C	They must be fed with open wire line
D	They have poor harmonic rejection