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. - G0A03

How can you determine that your station complies with FCC RF exposure regulations?

Select	Answer
A	By measurement of field strength using calibrated equipment
B	By calculation based on computer modeling
C	All these choices are correct
D	By calculation based on FCC OET Bulletin 65

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 8
B	AWG number 16
C	AWG number 12
D	AWG number 20

3. - G1A05

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

Select	Answer
A	28.000 MHz to 28.025 MHz
B	All these choices are correct
C	21.275 MHz to 21.300 MHz
D	7.125 MHz to 7.175 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	All these choices are correct
C	Regular transmissions offering equipment for sale, if intended for amateur radio use
D	Transmissions to assist with learning the International Morse code

5. - G1C07

What must be done before using a new digital protocol on the air?

Select	Answer
A	Publicly document the technical characteristics of the protocol
B	Type-certify equipment to FCC standards
C	Obtain an experimental license from the FCC
D	Submit a rule-making proposal to the FCC describing the codes and methods of the technique

6. - G1D04

Who must observe the administration of a Technician class license examination?

Select	Answer
A	At least two Volunteer Examiners of Technician class or higher
B	At least three Volunteer Examiners of Technician class
C	At least three Volunteer Examiners of General class or higher
D	At least two Volunteer Examiners of General class or higher

7. - G1E03

What is required to conduct communications with a digital station operating under automatic control outside the automatic control band segments?

Select	Answer
A	The interrogating transmission must be made by another automatically controlled station
B	No third-party traffic may be transmitted
C	The control operator of the interrogating station must hold an Amateur Extra class license
D	The station initiating the contact must be under local or remote control

8. - G2A02

Which mode is most commonly used for voice communications on the 160-, 75-, and 40-meter bands?

Select	Answer
A	Lower sideband
B	Suppressed sideband
C	Double sideband
D	Upper sideband

9. - G2B10

Which of the following is good amateur practice for net management?

Select	Answer
A	Have a backup frequency in case of interference or poor conditions
B	Always use multiple sets of phonetics during check-in
C	All these choices are correct
D	Transmit the full net roster at the beginning of every session

10. - G2C05

What is the best speed to use when answering a CQ in Morse code?

Select	Answer
A	The fastest speed at which you are comfortable copying, but no faster than the CQ
B	At the standard calling speed of 5 wpm
C	The fastest speed at which you are comfortable copying, but no slower than the CQ
D	At the standard calling speed of 10 wpm

11. - G2D11

Why are signal reports typically exchanged at the beginning of an HF contact?

Select	Answer
A	To follow standard radiogram structure
B	To be sure the contact will count for award programs
C	To allow each station to calibrate their frequency display
D	To allow each station to operate according to conditions

12. - G2E15

Which of the following is a common location for FT8?

Select	Answer
A	Anywhere in the voice portion of the band
B	Approximately 14.110 MHz to 14.113 MHz
C	Approximately 14.074 MHz to 14.077 MHz
D	Anywhere in the CW portion of the band

13. - G3A08

How can a geomagnetic storm affect HF propagation?

Select	Answer
A	Improve high-latitude HF propagation
B	Degrade high-latitude HF propagation
C	Improve ground wave propagation
D	Degrade ground wave propagation

14. - G3B01

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

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

15. - G3C08

Why are HF scatter signals in the skip zone usually weak?

Select	Answer
A	Signals are scattered from the magnetosphere, which is not a good reflector
B	Propagation is via ducts in the F region, which absorb most of the energy
C	Propagation is via ground waves, which absorb most of the signal energy
D	Only a small part of the signal energy is scattered into the skip zone

16. - G4A12

Which of the following is a common use of the dual-VFO feature on a transceiver?

Select	Answer
A	To allow transmitting on two frequencies at once
B	To improve frequency accuracy by allowing variable frequency output (VFO) operation
C	To transmit on one frequency and listen on another
D	To permit full duplex operation -- that is, transmitting and receiving at the same time

17. - G4B13

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

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

18. - G4C03

What sound is heard from an audio device experiencing RF interference from a single sideband phone transmitter?

Select	Answer
A	Clearly audible speech
B	On-and-off humming or clicking
C	Distorted speech
D	A steady hum whenever the transmitter is on the air

19. - G4D03

What is the effect of an incorrectly adjusted speech processor?

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

20. - G4E02

What is the purpose of a corona ball on an HF mobile antenna?

Select	Answer
A	To increase the “Q” of the antenna
B	To reduce the chance of damage if the antenna should strike an object
C	To reduce RF voltage discharge from the tip of the antenna while transmitting
D	To narrow the operating bandwidth of the antenna

21. - G5A07

What is the term for the inverse of impedance?

Select	Answer
A	Reluctance
B	Conductance
C	Susceptance
D	Admittance

22. - G5B02

How does the total current relate to the individual currents in a circuit of parallel resistors?

Select	Answer
A	It is the sum of the reciprocal of each individual voltage drop
B	It equals the sum of the currents through each branch
C	It equals the average of the branch currents
D	It decreases as more parallel branches are added to the circuit

23. - G5C14

Which of the following components should be added to an inductor to increase the inductance?

Select	Answer
A	A capacitor in parallel
B	A capacitor in series
C	An inductor in series
D	An inductor in parallel

24. - G6A03

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

Select	Answer
A	0.3 volts
B	0.1 volt
C	0.7 volts
D	1.0 volts

25. - G6B12

Which of these connector types is commonly used for low frequency or dc signal connections to a transceiver?

Select	Answer
A	Type N
B	RCA Phono
C	PL-259
D	BNC

26. - G7A05

What portion of the AC cycle is converted to DC by a half-wave rectifier?

Select	Answer
A	180 degrees
B	270 degrees
C	360 degrees
D	90 degrees

27. - G7B07

Which of the following are basic components of a sine wave oscillator?

Select	Answer
A	An amplifier and a divider
B	A filter and an amplifier operating in a feedback loop
C	A frequency multiplier and a mixer
D	A circulator and a filter operating in a feed-forward loop

28. - G7C10

What is an advantage of using I-Q modulation with software-defined radios (SDRs)?

Select	Answer
A	The need for high resolution analog-to-digital converters is eliminated
B	Minimum detectible signal level is reduced
C	Automatic conversion of the signal from digital to analog
D	All types of modulation can be created with appropriate processing

29. - G8A13

What is a link budget?

Select	Answer
A	The difference between transmit power and receiver sensitivity
B	The sum of antenna gains minus system losses
C	The financial costs associated with operating a radio link
D	The sum of transmit power and antenna gains minus system losses as seen at the receiver

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?

Select	Answer
A	416.7 Hz
B	60 kHz
C	5 kHz
D	101.75 Hz

31. - G8C03

What part of a packet radio frame contains the routing and handling information?

Select	Answer
A	Trailer
B	Preamble
C	Directory
D	Header

32. - G9A01

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

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

33. - G9B11

What is the approximate length for a 1/2 wave dipole antenna cut for 3.550 MHz?

Select	Answer
A	42 feet
B	263 feet
C	84 feet
D	132 feet

34. - G9C12

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

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

35. - G9D01

Which of the following antenna types will be most effective as a near vertical incidence skywave (NVIS) antenna for short-skip communications on 40 meters during the day?

Select	Answer
A	A horizontal dipole placed at approximately 1/2 wavelength above the ground
B	A horizontal dipole placed between 1/10 and 1/4 wavelength above the ground
C	A vertical antenna placed between 1/4 and 1/2 wavelength above the ground
D	A vertical dipole placed at approximately 1/2 wavelength above the ground