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

Anonymous User

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

Logging in (or registering) will help the system to select questions that you need to focus on.

1. - G0A08

Which of the following steps must an amateur operator take to ensure compliance with RF safety regulations?

Select	Answer
A	All these choices are correct
B	Perform a routine RF exposure evaluation and prevent access to any identified high exposure areas
C	Post a copy of FCC Part 97.13 in the station
D	Notify neighbors within a 100-foot radius of the antenna of the existence of the station and power levels

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

3. - G1A03

On which of the following bands is image transmission prohibited?

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

4. - G1B04

Which of the following transmissions is permitted for all amateur stations?

Select	Answer
A	Unidentified transmissions of less than 10 seconds duration for test purposes only
B	Encrypted messages, if not intended to facilitate a criminal act
C	Automatic retransmission of other amateur signals by any amateur station
D	Occasional retransmission of weather and propagation forecast information from US government stations

5. - G1C07

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

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

6. - G1D03

On which of the following band segments may you operate if you are a Technician class operator and have an unexpired Certificate of Successful Completion of Examination (CSCE) for General class privileges?

Select	Answer
A	On any General or Technician class band segment
B	Only on the Technician band segments until you have a receipt for the FCC application fee payment
C	Only the Technician band segments until your upgrade is posted in the FCC database
D	On any General or Technician class band segment except 30 meters and 60 meters

7. - G1E09

Under what circumstances are messages that are sent via digital modes exempt from Part 97 third-party rules that apply to other modes of communication?

Select	Answer
A	When messages are encrypted
B	Under no circumstances
C	When messages are not encrypted
D	When under automatic control

8. - G2A04

Which mode is most commonly used for voice communications on the 17- and 12-meter bands?

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

9. - G2B09

Who may be the control operator of an amateur station transmitting in RACES to assist relief operations during a disaster?

Select	Answer
A	A person holding an FCC-issued amateur operator license or an appropriate government official
B	Only a RACES net control operator
C	Only a person holding an FCC-issued amateur operator license
D	Any control operator when normal communication systems are operational

10. - G2C01

Which of the following describes full break-in CW operation (QSK)?

Select	Answer
A	Transmitting stations can receive between code characters and elements
B	Breaking stations send the Morse code prosign “BK”
C	An operator must activate a manual send/receive switch before and after every transmission
D	Automatic keyers, instead of hand keys, are used to send Morse code

11. - G2D08

Why do many amateurs keep a station log?

Select	Answer
A	The FCC requires a log of all international contacts
B	To help with a reply if the FCC requests information about your station
C	The FCC requires a log of all international third-party traffic
D	The log provides evidence of operation needed to renew a license without retest

12. - G2E03

What symptoms may result from other signals interfering with a PACTOR or VARA transmission?

Select	Answer
A	Long pauses in message transmission
B	Failure to establish a connection between stations
C	All these choices are correct
D	Frequent retries or timeouts

13. - G3A01

How does a higher sunspot number affect HF propagation?

Select	Answer
A	A zero sunspot number indicates undisturbed conditions
B	Lower sunspot numbers generally indicate greater probability of sporadic E propagation
C	A zero sunspot number indicates that radio propagation is not possible on any band
D	Higher sunspot numbers generally indicate a greater probability of good propagation at higher frequencies

14. - G3B12

Which of the following is typical of the lower HF frequencies during the summer?

Select	Answer
A	High levels of atmospheric noise or static
B	Heavy distortion on signals due to photon absorption
C	Poor propagation at any time of day
D	World-wide propagation during daylight hours

15. - G3C02

What is meant by the term “critical frequency” at a given incidence angle?

Select	Answer
A	The highest frequency which is refracted back to Earth
B	The lowest frequency which is refracted back to Earth
C	The frequency at which the signal-to-noise ratio approaches unity
D	The frequency at which the signal-to-noise ratio is 6 dB

16. - G4A02

What is the benefit of using the opposite or “reverse” sideband when receiving CW?

Select	Answer
A	More stations can be accommodated within a given signal passband
B	Accidental out-of-band operation can be prevented
C	Interference from impulse noise will be eliminated
D	It may be possible to reduce or eliminate interference from other signals

17. - G4B02

Which of the following is an advantage of an oscilloscope versus a digital voltmeter?

Select	Answer
A	An oscilloscope uses less power
B	Complex impedances can be easily measured
C	Complex waveforms can be measured
D	Greater precision

18. - G4C01

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

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

19. - G4D02

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

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

20. - G4E07

Which of the following may cause receive interference to an HF transceiver installed in a vehicle?

Select	Answer
A	All these choices are correct
B	The battery charging system
C	The control computers
D	The fuel delivery system

21. - G5A11

What letter is used to represent reactance?

Select	Answer
A	B
B	Y
C	Z
D	X

22. - G5B14

What is the output PEP of 500 volts peak-to-peak across a 50-ohm load?

Select	Answer
A	5000 watts
B	8.75 watts
C	2500 watts
D	625 watts

23. - G5C14

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

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

24. - G6A04

Which of the following is characteristic of an electrolytic capacitor?

Select	Answer
A	Tight tolerance
B	Inexpensive RF capacitor
C	Much less leakage than any other type
D	High capacitance for a given volume

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	90 degrees
B	180 degrees
C	360 degrees
D	270 degrees

27. - G7B03

Which of the following describes the function of a two-input AND gate?

Select	Answer
A	Output is low only when both inputs are high
B	Output is low when either or both inputs are high
C	Output is high when either or both inputs are low
D	Output is high only when both inputs are high

28. - G7C13

What term specifies a filter’s maximum ability to reject signals outside its passband?

Select	Answer
A	Rolloff
B	Ultimate rejection
C	Insertion loss
D	Notch depth

29. - G8A06

Which of the following is characteristic of QPSK31?

Select	Answer
A	All these choices are correct
B	Its encoding provides error correction
C	Its bandwidth is approximately the same as BPSK31
D	It is sideband sensitive

30. - G8B02

What is the term for interference from a signal at twice the IF frequency from the desired signal?

Select	Answer
A	Image response
B	Quadrature response
C	Mixer interference
D	Intermediate interference

31. - G8C02

Which digital mode is used as a low-power beacon for assessing HF propagation?

Select	Answer
A	PSK31
B	MFSK16
C	SSB-SC
D	WSPR

32. - G9A10

What standing wave ratio results from connecting a 50-ohm feed line to a 10-ohm resistive load?

Select	Answer
A	1:5
B	1:2
C	2:1
D	5:1

33. - G9B04

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

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

34. - G9C01

Which of the following would increase the bandwidth of a Yagi antenna?

Select	Answer
A	Larger-diameter elements
B	Tapered-diameter elements
C	Loading coils in series with the element
D	Closer element spacing

35. - G9D03

In which direction is the maximum radiation from a VHF/UHF “halo” antenna?

Select	Answer
A	On the same side as the feed point
B	Broadside to the plane of the halo
C	Opposite the feed point
D	Omnidirectional in the plane of the halo