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

2. - G0B09

Which of the following is true of an emergency generator installation?

Select	Answer
A	The generator must be insulated from ground
B	All these choices are correct
C	The generator should be operated in a well-ventilated area
D	Fuel should be stored near the generator for rapid refueling in case of an emergency

3. - G1A01

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

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

4. - G1B11

Who or what determines “good engineering and good amateur practice,” as applied to the operation of an amateur station in all respects not covered by the Part 97 rules?

Select	Answer
A	The ITU
B	The FCC
C	The IEEE
D	The control operator

5. - G1C07

What must be done before using a new digital protocol on the air?

Select	Answer
A	Obtain an experimental license from the FCC
B	Type-certify equipment to FCC standards
C	Submit a rule-making proposal to the FCC describing the codes and methods of the technique
D	Publicly document the technical characteristics of the protocol

6. - G1D01

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

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

7. - G1E04

Which of the following conditions require a licensed amateur radio operator to take specific steps to avoid harmful interference to other users or facilities?

Select	Answer
A	All these choices are correct
B	When a station is transmitting spread spectrum emissions
C	When using a band where the Amateur Service is secondary
D	When operating within one mile of an FCC Monitoring Station

8. - G2A03

Which mode is most commonly used for SSB voice communications in the VHF and UHF bands?

Select	Answer
A	Upper sideband
B	Double sideband
C	Suppressed sideband
D	Lower sideband

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

10. - G2C03

What does it mean when a CW operator sends “KN” at the end of a transmission?

Select	Answer
A	Closing station now
B	Operating full break-in
C	Listening only for a specific station or stations
D	No US stations should call

11. - G2D06

How is a directional antenna pointed when making a “long-path” contact with another station?

Select	Answer
A	Along the gray line
B	Toward the rising sun
C	Toward the north
D	180 degrees from the station’s short-path heading

12. - G2E10

Which of the following is a way to establish contact with a digital messaging system gateway station?

Select	Answer
A	Transmit a connect message on the station’s published frequency
B	Send QRL in Morse code
C	Send an email to the system control operator
D	Respond when the station broadcasts its SSID

13. - G3A01

How does a higher sunspot number affect HF propagation?

Select	Answer
A	A zero sunspot number indicates undisturbed conditions
B	A zero sunspot number indicates that radio propagation is not possible on any band
C	Lower sunspot numbers generally indicate greater probability of sporadic E propagation
D	Higher sunspot numbers generally indicate a greater probability of good propagation at higher frequencies

14. - G3B08

What does MUF stand for?

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

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 it is the highest
C	Because of temperature inversions
D	Because it is the densest

16. - G4A08

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

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

17. - G4B09

When is an analog multimeter preferred to a digital multimeter?

Select	Answer
A	When measuring the frequency of an oscillator
B	When high precision is desired
C	When adjusting circuits for maximum or minimum values
D	When testing logic circuits

18. - G4C03

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

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

19. - G4D05

How does a signal that reads 20 dB over S9 compare to one that reads S9 on a receiver, assuming a properly calibrated S meter?

Select	Answer
A	It is 100 times more powerful
B	It is 20 times less powerful
C	It is 20 times more powerful
D	It is 10 times less powerful

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

21. - G5A03

Which of the following is opposition to the flow of alternating current in an inductor?

Select	Answer
A	Admittance
B	Reactance
C	Conductance
D	Reluctance

22. - G5B03

How many watts of electrical power are consumed if 400 VDC is supplied to an 800-ohm load?

Select	Answer
A	0.5 watts
B	3200 watts
C	200 watts
D	400 watts

23. - G5C13

Which of the following components should be added to a capacitor to increase the capacitance?

Select	Answer
A	An inductor in parallel
B	A capacitor in parallel
C	An inductor in series
D	A capacitor in series

24. - G6A06

Why should wire-wound resistors not be used in RF circuits?

Select	Answer
A	The resistor’s inductance could make circuit performance unpredictable
B	The resistor’s tolerance value would not be adequate
C	The resistor’s internal capacitance would detune the circuit
D	The resistor could overheat

25. - G6B12

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

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

26. - G7A04

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

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

27. - G7B10

Which of the following describes a linear amplifier?

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

28. - G7C03

What is one reason to use an impedance matching transformer at a transmitter output?

Select	Answer
A	To present the desired impedance to the transmitter and feed line
B	To reduce power supply ripple
C	To minimize radiation resistance
D	To minimize transmitter power output

29. - G8A01

How is direct binary FSK modulation generated?

Select	Answer
A	By using a transceiver’s computer data interface protocol to change frequencies
B	By keying an FM transmitter with a sub-audible tone
C	By changing an oscillator’s frequency directly with a digital control signal
D	By reconfiguring the CW keying input to act as a tone generator

30. - G8B08

Why is it important to know the duty cycle of the mode you are using when transmitting?

Select	Answer
A	To prevent overmodulation
B	To allow time for the other station to break in during a transmission
C	To aid in tuning your transmitter
D	Some modes have high duty cycles that could exceed the transmitter’s average power rating

31. - G8C02

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

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

32. - G9A09

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

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

33. - G9B05

How does antenna height affect the azimuthal radiation pattern of a horizontal dipole HF antenna at elevation angles higher than about 45 degrees?

Select	Answer
A	If the antenna is too high, the pattern becomes unpredictable
B	If the antenna is less than 1/2 wavelength high, the azimuthal pattern is almost omnidirectional
C	If the antenna is less than 1/2 wavelength high, radiation off the ends of the wire is eliminated
D	Antenna height has no effect on the pattern

34. - G9C03

How do the lengths of a three-element Yagi reflector and director compare to that of the driven element?

Select	Answer
A	They are all the same length
B	The reflector is longer, and the director is shorter
C	Relative length depends on the frequency of operation
D	The reflector is shorter, and the director is longer

35. - G9D05

What is an advantage of vertically stacking horizontally polarized Yagi antennas?

Select	Answer
A	It allows simultaneous vertical and horizontal polarization
B	It narrows the main lobe in elevation
C	It allows quick selection of vertical or horizontal polarization
D	It narrows the main lobe in azimuth