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. - G0A04

What does “time averaging” mean when evaluating RF radiation exposure?

Select	Answer
A	The average amount of power developed by the transmitter over a specific 24-hour period
B	The total time of the exposure
C	The average time it takes RF radiation to have any long-term effect on the body
D	The total RF exposure averaged over a certain period

2. - G0B10

Which of the following is a danger from lead-tin solder?

Select	Answer
A	RF energy can convert the lead into a poisonous gas
B	Lead can contaminate food if hands are not washed carefully after handling the solder
C	Tin in the solder can “cold flow,” causing shorts in the circuit
D	High voltages can cause lead-tin solder to disintegrate suddenly

3. - G1A01

On which HF and/or MF amateur bands are there portions where General class licensees cannot transmit?

Select	Answer
A	80 meters, 20 meters, 15 meters, and 10 meters
B	80 meters, 40 meters, 20 meters, and 15 meters
C	60 meters, 30 meters, 17 meters, and 12 meters
D	160 meters, 60 meters, 15 meters, and 12 meters

4. - G1B05

Which of the following one-way transmissions are permitted?

Select	Answer
A	Transmissions to assist with learning the International Morse code
B	Regular transmissions offering equipment for sale, if intended for amateur radio use
C	All these choices are correct
D	Unidentified test transmissions of less than 10 seconds in duration

5. - G1C02

What is the maximum transmitter power an amateur station may use on the 12-meter band?

Select	Answer
A	50 watts PEP output
B	An effective radiated power equivalent to 100 watts from a half-wave dipole
C	200 watts PEP output
D	1500 watts PEP output

6. - G1D06

Until an upgrade to General class is shown in the FCC database, when must a Technician licensee identify with “AG” after their call sign?

Select	Answer
A	A special identifier is not required if their General class license application has been filed with the FCC
B	Whenever they operate using General class frequency privileges
C	Whenever they operate using Technician frequency privileges
D	Whenever they operate on any amateur frequency

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

8. - G2A05

Which mode of voice communication is most commonly used on the HF amateur bands?

Select	Answer
A	Frequency modulation
B	Double sideband
C	Single phase modulation
D	Single sideband

9. - G2B03

What is good amateur practice if propagation changes during a contact creating interference from other stations using the frequency?

Select	Answer
A	Switch to the opposite sideband
B	Attempt to resolve the interference problem with the other stations in a mutually acceptable manner
C	Advise the interfering stations that you are on the frequency and that you have priority
D	Decrease power and continue to transmit

10. - G2C11

What does the Q signal “QRV” mean?

Select	Answer
A	I am quitting for the day
B	You are sending too fast
C	I am ready to receive
D	There is interference on the frequency

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 accurate land masses
C	A map that shows true bearings and distances from a specific location
D	A map that shows the angle at which an amateur satellite crosses the equator

12. - G2E14

What could be wrong if you cannot decode an RTTY or other FSK signal even though it is apparently tuned in properly?

Select	Answer
A	The mark and space frequencies may be reversed
B	You may be listening on the wrong sideband
C	All these choices are correct
D	You may have selected the wrong baud rate

13. - G3A08

How can a geomagnetic storm affect HF propagation?

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

14. - G3B04

Which of the following is a way to determine current propagation on a desired band from your station?

Select	Answer
A	All these choices are correct
B	Use a network of automated receiving stations on the internet to see where your transmissions are being received
C	Send a series of dots and listen for echoes
D	Check the A-index

15. - G3C10

What is near vertical incidence skywave (NVIS) propagation?

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

16. - G4A13

What is the purpose of using a receive attenuator?

Select	Answer
A	To reduce excessive audio level on strong signals
B	To reduce power consumption when operating from batteries
C	To prevent receiver overload from strong incoming signals
D	To reduce the transmitter power when driving a linear amplifier

17. - G4B11

Which of the following must be connected to an antenna analyzer when it is being used for SWR measurements?

Select	Answer
A	Receiver
B	All these choices are correct
C	Antenna and feed line
D	Transmitter

18. - G4C03

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

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

19. - G4D10

How close to the lower edge of a band’s phone segment should your displayed carrier frequency be when using 3 kHz wide LSB?

Select	Answer
A	At least 3 kHz below the edge of the segment
B	At least 1 kHz above the edge of the segment
C	At least 3 kHz above the edge of the segment
D	At least 1 kHz below the edge of the segment

20. - G4E10

Why should a series diode be connected between a solar panel and a storage battery that is being charged by the panel?

Select	Answer
A	To prevent damage to the battery due to excessive voltage at high illumination levels
B	To prevent discharge of the battery through the panel during times of low or no illumination
C	To prevent overload by regulating the charging voltage
D	To limit the current flowing from the panel to a safe value

21. - G5A06

How does a capacitor react to AC?

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

22. - G5B10

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

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

23. - G5C09

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

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

24. - G6A11

What happens when an inductor is operated above its self-resonant frequency?

Select	Answer
A	Harmonics are generated
B	Catastrophic failure is likely
C	Its reactance increases
D	It becomes capacitive

25. - G6B08

How is an LED biased when emitting light?

Select	Answer
A	Reverse biased
B	Forward biased
C	In the tunnel-effect region
D	At the Zener voltage

26. - G7A02

Which of the following components are used in a power supply filter network?

Select	Answer
A	Diodes
B	Transformers and transducers
C	Capacitors and inductors
D	All these choices are correct

27. - G7B10

Which of the following describes a linear amplifier?

Select	Answer
A	A Class C high efficiency amplifier
B	An amplifier used as a frequency multiplier
C	An amplifier in which the output preserves the input waveform
D	Any RF power amplifier used in conjunction with an amateur transceiver

28. - G7C02

What output is produced by a balanced modulator?

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

29. - G8A14

What is link margin?

Select	Answer
A	The opposite of fade margin
B	Transmit power minus receiver sensitivity
C	The difference between received power level and minimum required signal level at the input to the receiver
D	Receiver sensitivity plus 3 dB

30. - G8B13

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

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

31. - G8C14

Which of the following describes a waterfall display?

Select	Answer
A	Frequency is vertical, signal strength is horizontal, time is intensity
B	Frequency is horizontal, signal strength is intensity, time is vertical
C	Frequency is vertical, signal strength is intensity, time is horizontal
D	Frequency is horizontal, signal strength is vertical, time is intensity

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 even number of physical half wavelengths long
B	The feed line must be an odd number of electrical quarter wavelengths long
C	The antenna feed point impedance must be matched to the characteristic impedance of the feed line
D	The antenna feed point must be at DC ground potential

33. - G9B06

Where should the radial wires of a ground-mounted vertical antenna system be placed?

Select	Answer
A	Parallel to the antenna element
B	At the center of the antenna
C	On the surface or buried a few inches below the ground
D	As high as possible above the ground

34. - G9C05

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

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

35. - G9D09

What is the primary use of a Beverage antenna?

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