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. - G0A05

What must you do if an evaluation of your station shows that the RF energy radiated by your station exceeds permissible limits for possible human absorption?

Select	Answer
A	Secure written permission from your neighbors to operate above the controlled MPE limits
B	All these choices are correct
C	Take action to prevent human exposure to the excessive RF fields
D	File an Environmental Impact Statement (EIS-97) with the FCC

2. - G0B01

Which wire or wires in a four-conductor 240 VAC circuit should be attached to fuses or circuit breakers?

Select	Answer
A	Only the ground wire
B	Only the hot wires
C	Only the neutral wire
D	All wires

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

4. - G1B04

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

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

5. - G1C10

What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 10-meter band?

Select	Answer
A	300 baud
B	19.6 kilobaud
C	1200 baud
D	56 kilobaud

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

7. - G1E02

When may a 10-meter repeater retransmit the 2-meter signal from a station that has a Technician class control operator?

Select	Answer
A	Under no circumstances
B	Only during an FCC-declared general state of communications emergency
C	Only if the 10-meter repeater control operator holds at least a General class license
D	Only if the station on 10-meters is operating under a Special Temporary Authorization allowing such retransmission

8. - G2A10

Which of the following statements is true of VOX operation versus PTT operation?

Select	Answer
A	It occupies less bandwidth
B	It provides more power output
C	It allows “hands free” operation
D	The received signal is more natural sounding

9. - G2B07

Which of the following complies with commonly accepted amateur practice when choosing a frequency on which to initiate a call?

Select	Answer
A	Follow the voluntary band plan
B	Identify your station by transmitting your call sign at least 3 times
C	All these choices are correct
D	Listen on the frequency for at least two minutes to be sure it is clear

10. - G2C08

What prosign is sent to indicate the end of a formal message when using CW?

Select	Answer
A	BK
B	SK
C	AR
D	KN

11. - G2D04

Which of the following describes an azimuthal projection map?

Select	Answer
A	A map that shows the number of degrees longitude that an amateur satellite appears to move westward at the equator with each orbit
B	A map that shows the angle at which an amateur satellite crosses the equator
C	A map that shows true bearings and distances from a specific location
D	A map that shows accurate land masses

12. - G2E01

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

Select	Answer
A	LSB
B	USB
C	CW
D	DSB

13. - G3A11

How long does it take a coronal mass ejection to affect radio propagation on Earth?

Select	Answer
A	4 to 8 minutes
B	28 days
C	15 hours to several days
D	14 days

14. - G3B03

Which frequency will have the least attenuation for long-distance skip propagation?

Select	Answer
A	Just below the critical frequency
B	Just above the critical frequency
C	Just above the LUF
D	Just below the MUF

15. - G3C10

What is near vertical incidence skywave (NVIS) propagation?

Select	Answer
A	Propagation near the MUF
B	Short distance MF or HF propagation at high elevation angles
C	Double hop propagation near the LUF
D	Long path HF propagation at sunrise and sunset

16. - G4A02

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

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

17. - G4B08

What transmitter performance parameter does a two-tone test analyze?

Select	Answer
A	Percentage of suppression of the carrier and undesired sideband for SSB
B	Percentage of carrier phase shift
C	Linearity
D	Percentage of frequency modulation

18. - G4C04

What sound is heard from an audio device experiencing RF interference from a CW transmitter?

Select	Answer
A	A CW signal at a nearly pure audio frequency
B	Severely distorted audio
C	On-and-off humming or clicking
D	A chirpy CW signal

19. - G4D06

How much change in signal strength is typically represented by one S unit?

Select	Answer
A	12 dB
B	6 dB
C	15 dB
D	18 dB

20. - G4E05

Which of the following most limits an HF mobile installation?

Select	Answer
A	“Picket fencing”
B	The wire gauge of the DC power line to the transceiver
C	FCC rules limiting mobile output power on the 75-meter band
D	Efficiency of the electrically short antenna

21. - G5A08

What is impedance?

Select	Answer
A	The ratio of current to voltage
B	The product of current and voltage
C	The product of current and reactance
D	The ratio of voltage to current

22. - G5B10

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

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

23. - G5C04

What is the approximate total resistance of a 100- and a 200-ohm resistor in parallel?

Select	Answer
A	300 ohms
B	67 ohms
C	75 ohms
D	150 ohms

24. - G6A10

Which element of a vacuum tube regulates the flow of electrons between cathode and plate?

Select	Answer
A	Control grid
B	Trigger electrode
C	Suppressor grid
D	Screen grid

25. - G6B11

What is an SMA connector?

Select	Answer
A	A type-S to type-M adaptor
B	A connector designed for serial multiple access signals
C	A small threaded connector suitable for signals up to several GHz
D	A type of push-on connector intended for high-voltage applications

26. - G7A01

What is the function of a power supply bleeder resistor?

Select	Answer
A	It acts as a fuse for excess voltage
B	It eliminates ground loop current
C	It discharges the filter capacitors when power is removed
D	It removes shock hazards from the induction coils

27. - G7B02

Which of these classes of amplifiers has the highest efficiency?

Select	Answer
A	Class A
B	Class C
C	Class AB
D	Class B

28. - G7C12

What is the frequency above which a low-pass filter’s output power is less than half the input power?

Select	Answer
A	Notch frequency
B	Cutoff frequency
C	Neper frequency
D	Rolloff frequency

29. - G8A13

What is a link budget?

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

30. - G8B11

What combination of a mixer’s Local Oscillator (LO) and RF input frequencies is found in the output?

Select	Answer
A	The ratio
B	The average
C	The sum and difference
D	The arithmetic product

31. - G8C15

What does an FT8 signal report of +3 mean?

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

32. - G9A09

What standing wave ratio results from connecting a 50-ohm feed line to a 200-ohm resistive load?

Select	Answer
A	1:4
B	2:1
C	4:1
D	1:2

33. - G9B10

What is the approximate length for a 1/2 wave dipole antenna cut for 14.250 MHz?

Select	Answer
A	24 feet
B	33 feet
C	16 feet
D	8 feet

34. - G9C04

How does antenna gain in dBi compare to gain stated in dBd for the same antenna?

Select	Answer
A	Gain in dBi is 2.15 dB higher
B	Gain in dBd is 1.25 dBd lower
C	Gain in dBd is 1.25 dBd higher
D	Gain in dBi is 2.15 dB lower

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