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

2. - G0B10

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

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

3. - G1A02

On which of the following bands is phone operation prohibited?

Select	Answer
A	12 meters
B	30 meters
C	160 meters
D	17 meters

4. - G1B09

On what HF frequencies are automatically controlled beacons permitted?

Select	Answer
A	21.08 MHz to 21.09 MHz
B	On any frequency if transmissions are in Morse code
C	28.20 MHz to 28.30 MHz
D	On any frequency if power is less than 1 watt

5. - G1C09

What is the maximum power limit on the 60-meter band?

Select	Answer
A	ERP of 100 watts PEP with respect to a dipole
B	10 watts RMS
C	1500 watts PEP
D	ERP of 100 watts PEP with respect to an isotropic antenna

6. - G1D02

What license examinations may you administer as an accredited Volunteer Examiner holding a General class operator license?

Select	Answer
A	Technician only
B	General and Technician
C	None, only Amateur Extra class licensees may be accredited
D	Amateur Extra, General, and Technician

7. - G1E06

The frequency allocations of which ITU region apply to radio amateurs operating in North and South America?

Select	Answer
A	Region 2
B	Region 1
C	Region 4
D	Region 3

8. - G2A11

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

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

9. - G2B03

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

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

10. - G2C10

What does the Q signal “QRN” mean?

Select	Answer
A	Zero beat my signal
B	Send more slowly
C	I am troubled by static
D	Stop sending

11. - G2D10

What is QRP operation?

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

12. - G2E13

What is another name for a Winlink Remote Message Server?

Select	Answer
A	Gateway
B	RJ-45
C	Printer/Server
D	Terminal Node Controller

13. - G3A04

Which of the following are the least reliable bands for long-distance communications during periods of low solar activity?

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

14. - G3B08

What does MUF stand for?

Select	Answer
A	The Maximum Usable Frequency during a 24-hour period
B	The Maximum Usable Frequency for communications between two points
C	The Minimum Usable Frequency for communications between two points
D	The Minimum Usable Frequency during a 24-hour period

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	Propagation near the MUF
D	Long path HF propagation at sunrise and sunset

16. - G4A13

What is the purpose of using a receive attenuator?

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

17. - G4B03

Which of the following is the best instrument to use for checking the keying waveform of a CW transmitter?

Select	Answer
A	A field strength meter
B	An oscilloscope
C	A sidetone monitor
D	A wavemeter

18. - G4C05

What is a possible cause of high voltages that produce RF burns?

Select	Answer
A	The ground rod is resonant
B	The ground wire has high impedance on that frequency
C	Flat braid rather than round wire has been used for the ground wire
D	Insulated wire has been used for the ground wire

19. - G4D01

What is the purpose of a speech processor in a transceiver?

Select	Answer
A	Decrease high-frequency voice output to prevent out-of-band operation
B	Increase transmitter bass response for more natural-sounding SSB signals
C	Prevent distortion of voice signals
D	Increase the apparent loudness of transmitted voice signals

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

21. - G5A11

What letter is used to represent reactance?

Select	Answer
A	B
B	Z
C	X
D	Y

22. - G5B05

How many watts are consumed when a current of 7.0 milliamperes flows through a 1,250-ohm resistance?

Select	Answer
A	Approximately 11 watts
B	Approximately 11 milliwatts
C	Approximately 61 milliwatts
D	Approximately 61 watts

23. - G5C08

What is the equivalent capacitance of two 5.0-nanofarad capacitors and one 750-picofarad capacitor connected in parallel?

Select	Answer
A	576.9 nanofarads
B	10.750 nanofarads
C	1,733 picofarads
D	3,583 picofarads

24. - G6A10

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

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

25. - G6B04

What is a typical upper frequency limit for low SWR operation of 50-ohm BNC connectors?

Select	Answer
A	500 MHz
B	50 MHz
C	4 GHz
D	40 GHz

26. - G7A12

Which symbol in Figure G7-1 represents a solid core transformer?

Select	Answer
A	Symbol 1
B	Symbol 7
C	Symbol 4
D	Symbol 6

27. - G7B08

How is the efficiency of an RF power amplifier determined?

Select	Answer
A	Divide the DC input power by the DC output power
B	Multiply the RF input power by the reciprocal of the RF output power
C	Add the RF input power to the DC output power
D	Divide the RF output power by the DC input power

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	Rolloff frequency
D	Neper frequency

29. - G8A08

Which of the following is an effect of overmodulation?

Select	Answer
A	Excessive bandwidth
B	Frequency drift
C	Insufficient audio
D	Insufficient bandwidth

30. - G8B05

Which intermodulation products are closest to the original signal frequencies?

Select	Answer
A	Odd-order
B	Even-order
C	Intercept point
D	Second harmonics

31. - G8C15

What does an FT8 signal report of +3 mean?

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

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 is independent of frequency
C	Attenuation increases
D	Attenuation decreases

33. - G9B03

Which of the following best describes the radiation pattern of a quarter-wave ground-plane vertical antenna?

Select	Answer
A	Hemispherical
B	Isotropic
C	Bi-directional in azimuth
D	Omnidirectional in azimuth

34. - G9C12

Which of the following is a characteristic of using a gamma match with a Yagi antenna?

Select	Answer
A	All these choices are correct
B	It does not require the driven element to be insulated from the boom
C	It is useful for matching multiband antennas
D	It does not require any inductors or capacitors

35. - G9D09

What is the primary use of a Beverage antenna?

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

Figure G7-1