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US Amateur Radio - General (Element 3, 2023-2027) Practice Test

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1. - G0A07

What is the effect of modulation duty cycle on RF exposure?

SelectAnswer
AA higher duty cycle permits greater power levels to be transmitted
BHigh duty cycle transmitters are exempt from RF exposure requirements
CA lower duty cycle permits greater power levels to be transmitted
DLow duty cycle transmitters are exempt from RF exposure evaluation requirements

2. - G0B05

Which of the following conditions will cause a ground fault circuit interrupter (GFCI) to disconnect AC power?

SelectAnswer
AOvervoltage on the hot wires
BAll these choices are correct
CCurrent flowing from one or more of the hot wires directly to ground
DCurrent flowing from one or more of the hot wires to the neutral wire

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?

SelectAnswer
AThe upper frequency portion
BThe upper frequency portion on frequencies below 7.3 MHz, and the lower portion on frequencies above 14.150 MHz
CThe lower frequency portion
DThe lower frequency portion on frequencies below 7.3 MHz, and the upper portion on frequencies above 14.150 MHz

4. - G1B07

What are the restrictions on the use of abbreviations or procedural signals in the amateur service?

SelectAnswer
AOnly “Q” signals are permitted
BThey may be used if they do not obscure the meaning of a message
CThey are not permitted
DThey are limited to those expressly listed in Part 97 of the FCC rules

5. - G1C04

Which of the following is required by the FCC rules when operating in the 60-meter band?

SelectAnswer
AYou must keep a record of the manufacturer of your equipment and the antenna used
BYou must keep a record of all third-party traffic
CIf you are using an antenna other than a dipole, you must keep a record of the gain of your antenna
DYou must keep a record of the date, time, frequency, power level, and stations worked

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?

SelectAnswer
AThere are no requirements other than being able to show a copy of the expired license
BThey must have a letter from the FCC showing they once held an amateur or commercial license
CThe applicant must show proof of the appropriate expired license grant and pass the current Element 2 exam
DContact the FCC to have the license reinstated

7. - G1E07

In what part of the 2.4 GHz band may an amateur station communicate with non-licensed Wi-Fi stations?

SelectAnswer
ANo part
BChannels 1 through 4
CAnywhere in the band
DChannels 42 through 45

8. - G2A04

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

SelectAnswer
ASuppressed sideband
BUpper sideband
CDouble sideband
DLower sideband

9. - G2B07

Which of the following complies with commonly accepted amateur practice when choosing a frequency on which to initiate a call?

SelectAnswer
AListen on the frequency for at least two minutes to be sure it is clear
BAll these choices are correct
CFollow the voluntary band plan
DIdentify your station by transmitting your call sign at least 3 times

10. - G2C03

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

SelectAnswer
AOperating full break-in
BListening only for a specific station or stations
CClosing station now
DNo US stations should call

11. - G2D06

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

SelectAnswer
AToward the north
B180 degrees from the station’s short-path heading
CAlong the gray line
DToward the rising sun

12. - G2E10

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

SelectAnswer
ARespond when the station broadcasts its SSID
BTransmit a connect message on the station’s published frequency
CSend an email to the system control operator
DSend QRL in Morse code

13. - G3A12

What does the K-index measure?

SelectAnswer
AThe solar radio flux at Boulder, Colorado
BThe relative position of sunspots on the surface of the Sun
CThe short-term stability of Earth’s geomagnetic field
DThe short-term stability of the Sun’s magnetic field

14. - G3B09

What is the approximate maximum distance along the Earth’s surface normally covered in one hop using the F2 region?

SelectAnswer
A2,500 miles
B180 miles
C1,200 miles
D12,000 miles

15. - G3C11

Which ionospheric region is the most absorbent of signals below 10 MHz during daylight hours?

SelectAnswer
AThe D region
BThe E region
CThe F1 region
DThe F2 region

16. - G4A06

What is the purpose of an antenna tuner?

SelectAnswer
AReduce the SWR in the feed line to the antenna
BReduce the power dissipation in the feedline to the antenna
CAll these choices are correct
DIncrease power transfer from the transmitter to the feed line

17. - G4B05

Why do voltmeters have high input impedance?

SelectAnswer
AIt allows for higher voltages to be safely measured
BIt decreases the loading on circuits being measured
CIt improves the resolution of the readings
DIt improves the frequency response

18. - G4C06

What is a possible effect of a resonant ground connection?

SelectAnswer
AOverheating of ground straps
BA ground loop
CCorrosion of the ground rod
DHigh RF voltages on the enclosures of station equipment

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?

SelectAnswer
AAt least 3 kHz above the edge of the segment
BAt least 3 kHz below the edge of the segment
CAt least 1 kHz below the edge of the segment
DAt least 1 kHz above the edge of the segment

20. - G4E03

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

SelectAnswer
ATo the battery using heavy-gauge wire
BTo the battery using insulated heavy duty balanced transmission line
CTo the alternator or generator using insulated heavy duty balanced transmission line
DTo the alternator or generator using heavy-gauge wire

21. - G5A02

What is reactance?

SelectAnswer
AOpposition to the flow of direct current caused by resistance
BReinforcement of the flow of direct current caused by resistance
CReinforcement of the flow of alternating current caused by capacitance or inductance
DOpposition to the flow of alternating current caused by capacitance or inductance

22. - G5B01

What dB change represents a factor of two increase or decrease in power?

SelectAnswer
AApproximately 3 dB
BApproximately 9 dB
CApproximately 6 dB
DApproximately 2 dB

23. - G5C07

What transformer turns ratio matches an antenna’s 600-ohm feed point impedance to a 50-ohm coaxial cable?

SelectAnswer
A12 to 1
B144 to 1
C24 to 1
D3.5 to 1

24. - G6A01

What is the minimum allowable discharge voltage for maximum life of a standard 12-volt lead-acid battery?

SelectAnswer
A12 volts
B8.5 volts
C6 volts
D10.5 volts

25. - G6B12

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

SelectAnswer
APL-259
BBNC
CRCA Phono
DType N

26. - G7A03

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

SelectAnswer
ASynchronous
BFull-wave bridge
CFull-wave
DHalf-wave

27. - G7B11

For which of the following modes is a Class C power stage appropriate for amplifying a modulated signal?

SelectAnswer
ASSB
BFM
CAM
DAll these choices are correct

28. - G7C11

Which of these functions is performed by software in a software-defined radio (SDR)?

SelectAnswer
AModulation
BDetection
CAll these choices are correct
DFiltering

29. - G8A14

What is link margin?

SelectAnswer
AReceiver sensitivity plus 3 dB
BThe opposite of fade margin
CThe difference between received power level and minimum required signal level at the input to the receiver
DTransmit power minus receiver sensitivity

30. - G8B01

Which mixer input is varied or tuned to convert signals of different frequencies to an intermediate frequency (IF)?

SelectAnswer
ABeat frequency oscillator
BLocal oscillator
CRF input
DImage frequency

31. - G8C15

What does an FT8 signal report of +3 mean?

SelectAnswer
AThe signal-to-noise ratio is equivalent to +3dB in a 2.5 kHz bandwidth
BThe signal is 3 times the noise level of an equivalent SSB signal
CThe signal is 3 dB over S9
DThe signal is S3 (weak signals)

32. - G9A11

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

SelectAnswer
AHigher loss increases SWR measured at the input to the line
BHigher loss reduces SWR measured at the input to the line
CTransmission line loss does not affect the SWR measurement
DHigher loss increases the accuracy of SWR measured at the input to the line

33. - G9B11

What is the approximate length for a 1/2 wave dipole antenna cut for 3.550 MHz?

SelectAnswer
A84 feet
B132 feet
C263 feet
D42 feet

34. - G9C12

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

SelectAnswer
AIt does not require any inductors or capacitors
BAll these choices are correct
CIt does not require the driven element to be insulated from the boom
DIt is useful for matching multiband antennas

35. - G9D10

In which direction or directions does an electrically small loop (less than 1/10 wavelength in circumference) have nulls in its radiation pattern?

SelectAnswer
ABroadside and in the plane of the loop
BElectrically small loops are omnidirectional
CIn the plane of the loop
DBroadside to the loop