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. - G0A06

What must you do if your station fails to meet the FCC RF exposure exemption criteria?

Select	Answer
A	Perform an RF exposure evaluation in accordance with World Meteorological Organization guidelines
B	Use an FCC-approved band-pass filter
C	Contact the FCC for permission to transmit
D	Perform an RF Exposure Evaluation in accordance with FCC OET Bulletin 65

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	25 amperes
B	15 amperes
C	30 amperes
D	20 amperes

3. - G1A07

On which amateur frequencies in the 10-meter band may stations with a General class control operator transmit CW emissions?

Select	Answer
A	28.000 MHz to 28.300 MHz only
B	28.000 MHz to 28.025 MHz only
C	The entire band
D	28.025 MHz to 28.300 MHz only

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	Regular transmissions offering equipment for sale, if intended for amateur radio use
D	Unidentified test transmissions of less than 10 seconds in duration

5. - G1C06

What is the limit for transmitter power on the 1.8 MHz band?

Select	Answer
A	1500 watts PEP output
B	1200 watts PEP output
C	200 watts PEP output
D	1000 watts PEP output

6. - G1D11

What action is required to obtain a new General class license after a previously held license has expired and the two-year grace period has passed?

Select	Answer
A	The applicant must show proof of the appropriate expired license grant and pass the current Element 2 exam
B	They must have a letter from the FCC showing they once held an amateur or commercial license
C	Contact the FCC to have the license reinstated
D	There are no requirements other than being able to show a copy of the expired license

7. - G1E10

Why should an amateur operator normally avoid transmitting on 14.100, 18.110, 21.150, 24.930 and 28.200 MHz?

Select	Answer
A	A system of automatic digital stations operates on those frequencies
B	These frequencies are set aside for emergency operations
C	A system of propagation beacon stations operates on those frequencies
D	These frequencies are set aside for bulletins from the FCC

8. - G2A09

Why do most amateur stations use lower sideband on the 160-, 75-, and 40-meter bands?

Select	Answer
A	Because it is fully compatible with an AM detector
B	Lower sideband is more efficient than upper sideband at these frequencies
C	It is commonly accepted amateur practice
D	Lower sideband is the only sideband legal on these frequency bands

9. - G2B08

What is the voluntary band plan restriction for US stations transmitting within the 48 contiguous states in the 50.1 MHz to 50.125 MHz band segment?

Select	Answer
A	Only SSTV contacts
B	Only contacts with stations not within the 48 contiguous states
C	Only digital contacts
D	Only contacts with other stations within the 48 contiguous states

10. - G2C06

What does the term “zero beat” mean in CW operation?

Select	Answer
A	Matching the transmit frequency to the frequency of a received signal
B	Matching the speed of the transmitting station
C	Sending without error
D	Operating split to avoid interference on frequency

11. - G2D10

What is QRP operation?

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

12. - G2E05

What is the standard sideband for JT65, JT9, FT4, or FT8 digital signal when using AFSK?

Select	Answer
A	SSB
B	DSB
C	USB
D	LSB

13. - G3A12

What does the K-index measure?

Select	Answer
A	The solar radio flux at Boulder, Colorado
B	The short-term stability of the Sun’s magnetic field
C	The relative position of sunspots on the surface of the Sun
D	The short-term stability of Earth’s geomagnetic field

14. - G3B10

What is the approximate maximum distance along the Earth’s surface normally covered in one hop using the E region?

Select	Answer
A	1,200 miles
B	12,000 miles
C	180 miles
D	2,500 miles

15. - G3C08

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

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

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

17. - G4B02

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

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

18. - G4C03

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

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

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. - G4E04

Why should DC power for a 100-watt HF transceiver not be supplied by a vehicle’s auxiliary power socket?

Select	Answer
A	The socket is not wired with an RF-shielded power cable
B	The DC polarity of the socket is reversed from the polarity of modern HF transceivers
C	The socket’s wiring may be inadequate for the current drawn by the transceiver
D	Drawing more than 50 watts from this socket could cause the engine to overheat

21. - G5A01

What happens when inductive and capacitive reactance are equal in a series LC circuit?

Select	Answer
A	Resonance causes impedance to be very high
B	Resonance causes impedance to be very low
C	Impedance is equal to the geometric mean of the inductance and capacitance
D	Impedance is equal to the arithmetic mean of the inductance and capacitance

22. - G5B10

What percentage of power loss is equivalent to a loss of 1 dB?

Select	Answer
A	10.9 percent
B	20.6 percent
C	12.2 percent
D	25.9 percent

23. - G5C09

What is the capacitance of three 100-microfarad capacitors connected in series?

Select	Answer
A	300 microfarads
B	0.33 microfarads
C	33.3 microfarads
D	3.0 microfarads

24. - G6A12

What is the primary purpose of a screen grid in a vacuum tube?

Select	Answer
A	To reduce grid-to-plate capacitance
B	To increase efficiency
C	To decrease plate resistance
D	To increase the control grid resistance

25. - G6B12

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

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

26. - G7A04

What is characteristic of a half-wave rectifier in a power supply?

Select	Answer
A	The output voltage is two times the peak input voltage
B	Only one diode is required
C	The ripple frequency is twice that of a full-wave rectifier
D	More current can be drawn from the half-wave rectifier

27. - G7B06

What is a shift register?

Select	Answer
A	A clocked array of circuits that passes data in steps along the array
B	A digital mixer
C	An analog mixer
D	An array of operational amplifiers used for tri-state arithmetic operations

28. - G7C08

Which parameter affects receiver sensitivity?

Select	Answer
A	Input amplifier gain
B	Input amplifier noise figure
C	Demodulator stage bandwidth
D	All these choices are correct

29. - G8A07

Which of the following phone emissions uses the narrowest bandwidth?

Select	Answer
A	Vestigial sideband
B	Frequency modulation
C	Single sideband
D	Phase modulation

30. - G8B01

Which mixer input is varied or tuned to convert signals of different frequencies to an intermediate frequency (IF)?

Select	Answer
A	Image frequency
B	Local oscillator
C	Beat frequency oscillator
D	RF input

31. - G8C08

Which of the following statements is true about PSK31?

Select	Answer
A	Upper case letters are sent with more power
B	Upper case letters use longer Varicode bit sequences and thus slow down transmission
C	Error correction is used to ensure accurate message reception
D	Higher power is needed as compared to RTTY for similar error rates

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 decreases
C	Attenuation increases
D	Attenuation is independent of frequency

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	Omnidirectional in azimuth
D	Isotropic

34. - G9C05

What is the primary effect of increasing boom length and adding directors to a Yagi antenna?

Select	Answer
A	Front-to-back ratio decreases
B	Beamwidth increases
C	Resonant frequency is lower
D	Gain increases

35. - G9D09

What is the primary use of a Beverage antenna?

Select	Answer
A	Portable direction finding at lower HF frequencies
B	Directional receiving for MF and low HF bands
C	Portable direction finding at higher HF frequencies
D	Directional transmitting for low HF bands