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. - G0A12

What stations are subject to the FCC rules on RF exposure?

Select	Answer
A	Only stations transmitting more than 500 watts PEP
B	All commercial stations; amateur radio stations are exempt
C	All stations with a time-averaged transmission of more than one milliwatt
D	Only stations with antennas lower than one wavelength above the ground

2. - G0B03

Which size of fuse or circuit breaker would be appropriate to use with a circuit that uses AWG number 14 wiring?

Select	Answer
A	20 amperes
B	25 amperes
C	15 amperes
D	30 amperes

3. - G1A06

Which of the following applies when the FCC rules designate the amateur service as a secondary user on a band?

Select	Answer
A	Amateur stations may only operate during specific hours of the day, while primary users are permitted 24-hour use of the band
B	Amateur stations must record the call sign of the primary service station before operating on a frequency assigned to that station
C	Amateur stations must not cause harmful interference to primary users and must accept interference from primary users
D	Amateur stations may use the band only during emergencies

4. - G1B03

Which of the following is a purpose of a beacon station as identified in the FCC rules?

Select	Answer
A	Observation of propagation and reception
B	Automatic identification of repeaters
C	Transmission of bulletins of general interest to amateur radio licensees
D	All these choices are correct

5. - G1C03

What is the maximum bandwidth permitted by FCC rules for amateur radio stations transmitting on USB frequencies in the 60-meter band?

Select	Answer
A	2.8 kHz
B	3 kHz
C	1.8 kHz
D	5.6 kHz

6. - G1D01

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

Select	Answer
A	Only persons who once held an FCC issued Novice, Technician, or Technician Plus license
B	Anyone who held an FCC-issued amateur radio license that expired not less than 5 and not more than 15 years ago
C	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
D	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

7. - G1E11

On what bands may automatically controlled stations transmitting RTTY or data emissions communicate with other automatically controlled digital stations?

Select	Answer
A	Anywhere in the non-phone segments of the 10-meter or shorter wavelength bands
B	Anywhere in the 6-meter or shorter wavelength bands, and in limited segments of some of the HF bands
C	Only in the non-phone Extra Class segments of the bands
D	On any band segment where digital operation is permitted

8. - G2A11

Generally, who should respond to a station in the contiguous 48 states calling “CQ DX”?

Select	Answer
A	Only stations in Germany
B	Any stations outside the lower 48 states
C	Only contest stations
D	Any caller is welcome to respond

9. - G2B04

When selecting a CW transmitting frequency, what minimum separation from other stations should be used to minimize interference to stations on adjacent frequencies?

Select	Answer
A	1 kHz to 3 kHz
B	150 Hz to 500 Hz
C	5 Hz to 50 Hz
D	3 kHz to 6 kHz

10. - G2C02

What should you do if a CW station sends “QRS?”

Select	Answer
A	Increase your power
B	Send slower
C	Repeat everything twice
D	Change frequency

11. - G2D10

What is QRP operation?

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

12. - G2E06

What is the most common frequency shift for RTTY emissions in the amateur HF bands?

Select	Answer
A	170 Hz
B	425 Hz
C	85 Hz
D	850 Hz

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 communications via satellite more than direct communications
C	It disrupts signals on lower frequencies more than those on higher frequencies
D	None, because only areas on the night side of the Earth are affected

14. - G3B05

How does the ionosphere affect radio waves with frequencies below the MUF and above the LUF?

Select	Answer
A	They are refracted back to Earth
B	They are amplified by interaction with the ionosphere
C	They pass through the ionosphere
D	They are refracted and trapped in the ionosphere to circle Earth

15. - G3C06

What is a characteristic of HF scatter?

Select	Answer
A	Scatter propagation occurs only at night
B	There are very large, sudden swings in signal strength
C	Signals have a fluttering sound
D	Phone signals have high intelligibility

16. - G4A08

What is the correct adjustment for the LOAD or COUPLING control of a vacuum tube RF power amplifier?

Select	Answer
A	Highest plate voltage while minimizing grid current
B	Minimum plate current without exceeding maximum allowable grid current
C	Minimum SWR on the antenna
D	Desired power output without exceeding maximum allowable plate current

17. - G4B04

What signal source is connected to the vertical input of an oscilloscope when checking the RF envelope pattern of a transmitted signal?

Select	Answer
A	The transmitter balanced mixer output
B	The local oscillator of the transmitter
C	The attenuated RF output of the transmitter
D	An external RF oscillator

18. - G4C10

What could be a symptom caused by a ground loop in your station’s audio connections?

Select	Answer
A	The SWR reading for one or more antennas is suddenly very high
B	You receive reports of “hum” on your station’s transmitted signal
C	You receive reports of harmonic interference from your station
D	An item of station equipment starts to draw excessive amounts of current

19. - G4D02

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

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

20. - G4E02

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

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

21. - G5A06

How does a capacitor react to AC?

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

22. - G5B14

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

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

23. - G5C10

What is the inductance of three 10-millihenry inductors connected in parallel?

Select	Answer
A	3.3 henries
B	3.3 millihenries
C	0.30 henries
D	30 millihenries

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 formed by a back-biased junction
D	The gate is separated from the channel by a thin insulating layer

25. - G6B02

What is meant by the term MMIC?

Select	Answer
A	Mode Modulated Integrated Circuit
B	Metal Monolayer Integrated Circuit
C	Multi-Mode Integrated Circuit
D	Monolithic Microwave Integrated Circuit

26. - G7A03

Which type of rectifier circuit uses two diodes and a center-tapped transformer?

Select	Answer
A	Full-wave
B	Half-wave
C	Synchronous
D	Full-wave bridge

27. - G7B11

For which of the following modes is a Class C power stage appropriate for amplifying a modulated signal?

Select	Answer
A	FM
B	SSB
C	All these choices are correct
D	AM

28. - G7C02

What output is produced by a balanced modulator?

Select	Answer
A	Audio with equalized frequency response
B	Audio extracted from the modulation signal
C	Double-sideband modulated RF
D	Frequency modulated RF

29. - G8A11

What is the modulation envelope of an AM signal?

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

30. - G8B13

Which of the following is an odd-order intermodulation product of frequencies F1 and F2?

Select	Answer
A	3F1-F2
B	2F1-F2
C	All these choices are correct
D	5F1-3F2

31. - G8C15

What does an FT8 signal report of +3 mean?

Select	Answer
A	The signal is 3 dB over S9
B	The signal is S3 (weak signals)
C	The signal-to-noise ratio is equivalent to +3dB in a 2.5 kHz bandwidth
D	The signal is 3 times the noise level of an equivalent SSB signal

32. - G9A07

What must be done to prevent standing waves on a feed line connected to an antenna?

Select	Answer
A	The feed line must be an odd number of electrical quarter wavelengths long
B	The feed line must be an even number of physical half wavelengths long
C	The antenna feed point must be at DC ground potential
D	The antenna feed point impedance must be matched to the characteristic impedance of the feed 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	Omnidirectional in azimuth
C	Hemispherical
D	Isotropic

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	Beamwidth increases
C	Gain increases
D	Front-to-back ratio decreases

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