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

2. - G0B11

Which of the following is required for lightning protection ground rods?

Select	Answer
A	Lightning grounds must be connected to all ungrounded wiring
B	They must be bonded to all buried water and gas lines
C	Bends in ground wires must be made as close as possible to a right angle
D	They must be bonded together with all other grounds

3. - G1A11

When General class licensees are not permitted to use the entire voice portion of a band, which portion of the voice segment is available to them?

Select	Answer
A	The lower frequency portion on frequencies below 7.3 MHz, and the upper portion on frequencies above 14.150 MHz
B	The upper frequency portion
C	The lower frequency portion
D	The upper frequency portion on frequencies below 7.3 MHz, and the lower portion on frequencies above 14.150 MHz

4. - G1B08

When is it permissible to communicate with amateur stations in countries outside the areas administered by the Federal Communications Commission?

Select	Answer
A	Only when the contact is with amateurs licensed by a country which is a member of the International Amateur Radio Union, or by a territory possessed by such a country
B	Only when the foreign country has a formal third-party agreement filed with the FCC
C	Only when the contact is with amateurs licensed by a country which is a member of the United Nations, or by a territory possessed by such a country
D	When the contact is with amateurs in any country except those whose administrations have notified the ITU that they object to such communications

5. - G1C01

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

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

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

7. - G1E03

What is required to conduct communications with a digital station operating under automatic control outside the automatic control band segments?

Select	Answer
A	No third-party traffic may be transmitted
B	The interrogating transmission must be made by another automatically controlled station
C	The station initiating the contact must be under local or remote control
D	The control operator of the interrogating station must hold an Amateur Extra class license

8. - G2A04

Which mode is most commonly used for voice communications on the 17- and 12-meter bands?

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

9. - G2B06

How can you avoid harmful interference on an apparently clear frequency before calling CQ on CW or phone?

Select	Answer
A	Listen for 2 minutes before calling CQ
B	Send the letter “V” in Morse code several times and listen for a response, or say “test” several times and listen for a response
C	Send “QSY” on CW or if using phone, announce “the frequency is in use,” then give your call sign and listen for a response
D	Send “QRL?” on CW, followed by your call sign; or, if using phone, ask if the frequency is in use, followed by your call sign

10. - G2C08

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

Select	Answer
A	KN
B	SK
C	BK
D	AR

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	180 degrees from the station’s short-path heading
D	Toward the north

12. - G2E15

Which of the following is a common location for FT8?

Select	Answer
A	Anywhere in the voice portion of the band
B	Approximately 14.110 MHz to 14.113 MHz
C	Approximately 14.074 MHz to 14.077 MHz
D	Anywhere in the CW portion of the band

13. - G3A10

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

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

14. - G3B02

What factors affect the MUF?

Select	Answer
A	Path distance and location
B	All these choices are correct
C	Time of day and season
D	Solar radiation and ionospheric disturbances

15. - G3C10

What is near vertical incidence skywave (NVIS) propagation?

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

16. - G4A01

What is the purpose of the notch filter found on many HF transceivers?

Select	Answer
A	To reduce interference from carriers in the receiver passband
B	To remove interfering splatter generated by signals on adjacent frequencies
C	To restrict the transmitter voice bandwidth
D	To eliminate receiver interference from impulse noise sources

17. - G4B12

What effect can strong signals from nearby transmitters have on an antenna analyzer?

Select	Answer
A	Desensitization which can cause intermodulation products which interfere with impedance readings
B	Generation of harmonics which interfere with frequency readings
C	All these choices are correct
D	Received power that interferes with SWR readings

18. - G4C09

How can the effects of ground loops be minimized?

Select	Answer
A	Bond equipment enclosures together
B	Connect the AC neutral conductor to the ground wire
C	Connect all ground conductors in series
D	Avoid using lock washers and star washers when making ground connections

19. - G4D03

What is the effect of an incorrectly adjusted speech processor?

Select	Answer
A	Excessive background noise
B	All these choices are correct
C	Distorted speech
D	Excess intermodulation products

20. - G4E03

Which of the following direct, fused power connections would be the best for a 100-watt HF mobile installation?

Select	Answer
A	To the battery using insulated heavy duty balanced transmission line
B	To the battery using heavy-gauge wire
C	To the alternator or generator using insulated heavy duty balanced transmission line
D	To the alternator or generator using heavy-gauge wire

21. - G5A07

What is the term for the inverse of impedance?

Select	Answer
A	Admittance
B	Conductance
C	Reluctance
D	Susceptance

22. - G5B12

What is the RMS voltage across a 50-ohm dummy load dissipating 1200 watts?

Select	Answer
A	346 volts
B	245 volts
C	173 volts
D	692 volts

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 series
C	A capacitor in parallel
D	An inductor in series

24. - G6A06

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

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

25. - G6B10

How does a ferrite bead or core reduce common-mode RF current on the shield of a coaxial cable?

Select	Answer
A	By creating an out-of-phase current to cancel the common-mode current
B	It converts common-mode current to differential mode current
C	By creating an impedance in the current’s path
D	Ferrites expel magnetic fields

26. - G7A03

Which type of rectifier circuit uses two diodes and a center-tapped transformer?

Select	Answer
A	Half-wave
B	Synchronous
C	Full-wave
D	Full-wave bridge

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. - G7C05

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

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

29. - G8A01

How is direct binary FSK modulation generated?

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

30. - G8B04

What is the stage in a VHF FM transmitter that generates a harmonic of a lower frequency signal to reach the desired operating frequency?

Select	Answer
A	Mixer
B	Multiplier
C	Balanced converter
D	Reactance modulator

31. - G8C11

How are the two separate frequencies of a Frequency Shift Keyed (FSK) signal identified?

Select	Answer
A	Mark and space
B	High and low
C	On and off
D	Dot and dash

32. - G9A11

What is the effect of transmission line loss on SWR measured at the input to the line?

Select	Answer
A	Higher loss increases SWR measured at the input to the line
B	Higher loss increases the accuracy of SWR measured at the input to the line
C	Transmission line loss does not affect the SWR measurement
D	Higher loss reduces SWR measured at the input to the line

33. - G9B06

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

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

34. - G9C08

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

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

35. - G9D06

Which of the following is an advantage of a log-periodic antenna?

Select	Answer
A	Polarization diversity
B	Wide bandwidth
C	Higher gain per element than a Yagi antenna
D	Harmonic suppression