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. - G0A02

Which of the following is used to determine RF exposure from a transmitted signal?

Select	Answer
A	Its power density
B	All these choices are correct
C	Its frequency
D	Its duty cycle

2. - G0B02

According to the National Electrical Code, what is the minimum wire size that may be used safely for wiring with a 20-ampere circuit breaker?

Select	Answer
A	AWG number 20
B	AWG number 12
C	AWG number 16
D	AWG number 8

3. - G1A05

On which of the following frequencies are General class licensees prohibited from operating as control operator?

Select	Answer
A	All these choices are correct
B	7.125 MHz to 7.175 MHz
C	28.000 MHz to 28.025 MHz
D	21.275 MHz to 21.300 MHz

4. - G1B05

Which of the following one-way transmissions are permitted?

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

5. - G1C09

What is the maximum power limit on the 60-meter band?

Select	Answer
A	10 watts RMS
B	ERP of 100 watts PEP with respect to a dipole
C	ERP of 100 watts PEP with respect to an isotropic antenna
D	1500 watts PEP

6. - G1D07

Volunteer Examiners are accredited by what organization?

Select	Answer
A	The Universal Licensing System
B	The Federal Communications Commission
C	The Wireless Telecommunications Bureau
D	A Volunteer Examiner Coordinator

7. - G1E04

Which of the following conditions require a licensed amateur radio operator to take specific steps to avoid harmful interference to other users or facilities?

Select	Answer
A	When a station is transmitting spread spectrum emissions
B	When using a band where the Amateur Service is secondary
C	All these choices are correct
D	When operating within one mile of an FCC Monitoring Station

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 provides more power output
C	It allows “hands free” operation
D	It occupies less bandwidth

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

10. - G2C04

What does the Q signal “QRL?” mean?

Select	Answer
A	“Are you operating full break-in?” or “Can you operate full break-in?”
B	“Are you busy?” or “Is this frequency in use?”
C	“Will you keep the frequency clear?”
D	“Are you listening only for a specific station?”

11. - G2D07

Which of the following are examples of the NATO Phonetic Alphabet?

Select	Answer
A	Alpha, Bravo, Charlie, Delta
B	America, Boston, Canada, Denmark
C	Able, Baker, Charlie, Dog
D	Adam, Boy, Charles, David

12. - G2E01

Which mode is normally used when sending RTTY signals via AFSK with an SSB transmitter?

Select	Answer
A	DSB
B	LSB
C	USB
D	CW

13. - G3A10

What causes HF propagation conditions to vary periodically in a 26- to 28-day cycle?

Select	Answer
A	Long term oscillations in the upper atmosphere
B	The position of the Moon in its orbit
C	Rotation of the Sun’s surface layers around its axis
D	Cyclic variation in Earth’s radiation belts

14. - G3B06

What usually happens to radio waves with frequencies below the LUF?

Select	Answer
A	They pass through the ionosphere
B	They are attenuated before reaching the destination
C	They are refracted back to Earth
D	They are refracted and trapped in the ionosphere to circle Earth

15. - G3C07

What makes HF scatter signals often sound distorted?

Select	Answer
A	The E region is not present
B	The ionospheric region involved is unstable
C	Energy is scattered into the skip zone through several different paths
D	Ground waves are absorbing much of the signal

16. - G4A06

What is the purpose of an antenna tuner?

Select	Answer
A	Reduce the SWR in the feed line to the antenna
B	Reduce the power dissipation in the feedline to the antenna
C	All these choices are correct
D	Increase power transfer from the transmitter to the feed line

17. - G4B07

What signals are used to conduct a two-tone test?

Select	Answer
A	Two non-harmonically related audio signals
B	Two audio signals of the same frequency shifted 90 degrees
C	Two audio frequency range square wave signals of equal amplitude
D	Two swept frequency tones

18. - G4C05

What is a possible cause of high voltages that produce RF burns?

Select	Answer
A	Insulated wire has been used for the ground wire
B	Flat braid rather than round wire has been used for the ground wire
C	The ground rod is resonant
D	The ground wire has high impedance on that frequency

19. - G4D01

What is the purpose of a speech processor in a transceiver?

Select	Answer
A	Increase transmitter bass response for more natural-sounding SSB signals
B	Prevent distortion of voice signals
C	Increase the apparent loudness of transmitted voice signals
D	Decrease high-frequency voice output to prevent out-of-band operation

20. - G4E11

What precaution should be taken when connecting a solar panel to a lithium iron phosphate battery?

Select	Answer
A	Ground the solar panel outer metal framework
B	A series resistor must be in place
C	The solar panel must have a charge controller
D	Ensure the battery is placed terminals-up

21. - G5A04

Which of the following is opposition to the flow of alternating current in a capacitor?

Select	Answer
A	Admittance
B	Reluctance
C	Conductance
D	Reactance

22. - G5B11

What is the ratio of PEP to average power for an unmodulated carrier?

Select	Answer
A	1.414
B	0.707
C	2.00
D	1.00

23. - G5C06

What is the voltage output of a transformer with a 500-turn primary and a 1500-turn secondary when 120 VAC is applied to the primary?

Select	Answer
A	120 volts
B	360 volts
C	40 volts
D	25.5 volts

24. - G6A09

Which of the following describes MOSFET construction?

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

25. - G6B08

How is an LED biased when emitting light?

Select	Answer
A	At the Zener voltage
B	Reverse biased
C	Forward biased
D	In the tunnel-effect region

26. - G7A02

Which of the following components are used in a power supply filter network?

Select	Answer
A	All these choices are correct
B	Capacitors and inductors
C	Diodes
D	Transformers and transducers

27. - G7B01

What is the purpose of neutralizing an amplifier?

Select	Answer
A	To eliminate self-oscillations
B	To keep the carrier on frequency
C	To cut off the final amplifier during standby periods
D	To limit the modulation index

28. - G7C04

How is a product detector used?

Select	Answer
A	Used in test gear to detect spurious mixing products
B	Used in a single sideband receiver to extract the modulated signal
C	Used in transmitter to perform frequency multiplication
D	Used in an FM receiver to filter out unwanted sidebands

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. - G8B05

Which intermodulation products are closest to the original signal frequencies?

Select	Answer
A	Second harmonics
B	Intercept point
C	Odd-order
D	Even-order

31. - G8C16

Which of the following provide digital voice modes?

Select	Answer
A	DMR, D-STAR, and SystemFusion
B	Winlink, PACTOR II, and PACTOR III
C	FT8, FT4, and FST4
D	WSPR, MFSK16, and EasyPAL

32. - G9A05

How does the attenuation of coaxial cable change with increasing frequency?

Select	Answer
A	Attenuation follows Marconi’s Law of Attenuation
B	Attenuation is independent of frequency
C	Attenuation increases
D	Attenuation decreases

33. - G9B04

What is the radiation pattern of a dipole antenna in free space in a plane containing the conductor?

Select	Answer
A	It is a circle (equal radiation in all directions)
B	It has a pair of lobes on one side of the antenna and a single lobe on the other side
C	It is a figure-eight off both ends of the antenna
D	It is a figure-eight at right angles to the antenna

34. - G9C12

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

Select	Answer
A	It does not require any inductors or capacitors
B	It does not require the driven element to be insulated from the boom
C	All these choices are correct
D	It is useful for matching multiband antennas

35. - G9D10

In which direction or directions does an electrically small loop (less than 1/10 wavelength in circumference) have nulls in its radiation pattern?

Select	Answer
A	In the plane of the loop
B	Broadside to the loop
C	Broadside and in the plane of the loop
D	Electrically small loops are omnidirectional