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. - G0A03

How can you determine that your station complies with FCC RF exposure regulations?

Select	Answer
A	By calculation based on computer modeling
B	By calculation based on FCC OET Bulletin 65
C	By measurement of field strength using calibrated equipment
D	All these choices are correct

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. - G1A04

Which of the following amateur bands is restricted to communication only on specific channels, rather than frequency ranges?

Select	Answer
A	12 meters
B	30 meters
C	60 meters
D	11 meters

4. - G1B06

Under what conditions are state and local governments permitted to regulate amateur radio antenna structures?

Select	Answer
A	Only when such structures exceed 50 feet in height and are clearly visible 1,000 feet from the structure
B	Amateur Service communications must be reasonably accommodated, and regulations must constitute the minimum practical to accommodate a legitimate purpose of the state or local entity
C	At any time and to any extent necessary to accomplish a legitimate purpose of the state or local entity, provided that proper filings are made with the FCC
D	Under no circumstances, FCC rules take priority

5. - G1C01

What is the maximum transmitter power an amateur station may use on 10.140 MHz?

Select	Answer
A	200 watts PEP output
B	1000 watts PEP output
C	1500 watts PEP output
D	2000 watts PEP output

6. - G1D01

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

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

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 if the 10-meter repeater control operator holds at least a General class license
C	Only if the station on 10-meters is operating under a Special Temporary Authorization allowing such retransmission
D	Only during an FCC-declared general state of communications emergency

8. - G2A08

What is the recommended way to break into a phone contact?

Select	Answer
A	Say “QRZ” several times, followed by your call sign
B	Say your call sign once
C	Say “CQ” followed by the call sign of either station
D	Say “Breaker Breaker”

9. - G2B09

Who may be the control operator of an amateur station transmitting in RACES to assist relief operations during a disaster?

Select	Answer
A	Only a RACES net control operator
B	A person holding an FCC-issued amateur operator license or an appropriate government official
C	Any control operator when normal communication systems are operational
D	Only a person holding an FCC-issued amateur operator license

10. - G2C07

When sending CW, what does a “C” mean when added to the RST report?

Select	Answer
A	Chirpy or unstable signal
B	Key clicks
C	Report was read from an S meter rather than estimated
D	100 percent copy

11. - G2D10

What is QRP operation?

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

12. - G2E07

Which of the following is required when using FT8?

Select	Answer
A	A vertically polarized antenna
B	A special hardware modem
C	Computer time accurate to within approximately 1 second
D	Receiver attenuator set to -12 dB

13. - G3A10

What causes HF propagation conditions to vary periodically in a 26- to 28-day cycle?

Select	Answer
A	The position of the Moon in its orbit
B	Cyclic variation in Earth’s radiation belts
C	Rotation of the Sun’s surface layers around its axis
D	Long term oscillations in the upper atmosphere

14. - G3B11

What happens to HF propagation when the LUF exceeds the MUF?

Select	Answer
A	Propagation via ordinary skywave communications is not possible over that path
B	HF communications over the path are enhanced
C	Propagation over the path on all HF frequencies is enhanced
D	Double-hop propagation along the path is more common

15. - G3C03

Why is skip propagation via the F2 region longer than that via the other ionospheric regions?

Select	Answer
A	Because of the Doppler effect
B	Because of temperature inversions
C	Because it is the densest
D	Because it is the highest

16. - G4A08

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

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

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	Greater precision
C	Complex waveforms can be measured
D	An oscilloscope uses less power

18. - G4C05

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

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

19. - G4D07

How much must the power output of a transmitter be raised to change the S meter reading on a distant receiver from S8 to S9?

Select	Answer
A	Approximately 1.5 times
B	Approximately 8 times
C	Approximately 2 times
D	Approximately 4 times

20. - G4E07

Which of the following may cause receive interference to an HF transceiver installed in a vehicle?

Select	Answer
A	The battery charging system
B	The control computers
C	All these choices are correct
D	The fuel delivery system

21. - G5A12

What occurs in an LC circuit at resonance?

Select	Answer
A	Resistance is cancelled
B	Inductive reactance and capacitive reactance cancel
C	The circuit radiates all its energy in the form of radio waves
D	Current and voltage are equal

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 milliwatts
B	Approximately 11 watts
C	Approximately 61 milliwatts
D	Approximately 61 watts

23. - G5C12

What is the capacitance of a 20-microfarad capacitor connected in series with a 50-microfarad capacitor?

Select	Answer
A	70 microfarads
B	0.07 microfarads
C	14.3 microfarads
D	1,000 microfarads

24. - G6A05

What is the approximate forward threshold voltage of a silicon junction diode?

Select	Answer
A	0.3 volts
B	1.0 volts
C	0.7 volts
D	0.1 volt

25. - G6B08

How is an LED biased when emitting light?

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

27. - G7B10

Which of the following describes a linear amplifier?

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

28. - G7C05

Which of the following is characteristic of a direct digital synthesizer (DDS)?

Select	Answer
A	Relatively high-power output
B	Variable output frequency with the stability of a crystal oscillator
C	Extremely narrow tuning range
D	Pure sine wave output

29. - G8A04

What emission is produced by a reactance modulator connected to a transmitter RF amplifier stage?

Select	Answer
A	Phase modulation
B	Multiplex modulation
C	Pulse modulation
D	Amplitude modulation

30. - G8B02

What is the term for interference from a signal at twice the IF frequency from the desired signal?

Select	Answer
A	Mixer interference
B	Quadrature response
C	Intermediate interference
D	Image response

31. - G8C02

Which digital mode is used as a low-power beacon for assessing HF propagation?

Select	Answer
A	WSPR
B	MFSK16
C	PSK31
D	SSB-SC

32. - G9A02

What is the relationship between high standing wave ratio (SWR) and transmission line loss?

Select	Answer
A	High SWR reduces the relative effect of transmission line loss
B	There is no relationship between transmission line loss and SWR
C	High SWR increases loss in a lossy transmission line
D	High SWR makes it difficult to measure transmission line loss

33. - G9B08

How does the feed point impedance of a 1/2 wave dipole change as the feed point is moved from the center toward the ends?

Select	Answer
A	It is unaffected by the location of the feed point
B	It steadily decreases
C	It peaks at about 1/8 wavelength from the end
D	It steadily increases

34. - G9C08

What is meant by the “main lobe” of a directive antenna?

Select	Answer
A	The magnitude of the maximum vertical angle of radiation
B	The point of maximum current in a radiating antenna element
C	The maximum voltage standing wave point on a radiating element
D	The direction of maximum radiated field strength from the antenna

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	Directional transmitting for low HF bands
D	Portable direction finding at higher HF frequencies