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

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1. - G0A08

Which of the following steps must an amateur operator take to ensure compliance with RF safety regulations?

SelectAnswer
APerform a routine RF exposure evaluation and prevent access to any identified high exposure areas
BNotify neighbors within a 100-foot radius of the antenna of the existence of the station and power levels
CPost a copy of FCC Part 97.13 in the station
DAll these choices are correct

2. - G0B06

Which of the following is covered by the National Electrical Code?

SelectAnswer
AAcceptable modulation limits
BElectrical safety of the station
CRF exposure limits of the human body
DAcceptable bandwidth limits

3. - G1A08

Which HF bands have segments exclusively allocated to Amateur Extra licensees?

SelectAnswer
A80 meters, 40 meters, 20 meters, and 15 meters
BAll HF bands
CAll HF bands except 160 meters and 10 meters
D60 meters, 30 meters, 17 meters, and 12 meters

4. - G1B06

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

SelectAnswer
AAmateur Service communications must be reasonably accommodated, and regulations must constitute the minimum practical to accommodate a legitimate purpose of the state or local entity
BOnly when such structures exceed 50 feet in height and are clearly visible 1,000 feet from the structure
CAt 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
DUnder no circumstances, FCC rules take priority

5. - G1C02

What is the maximum transmitter power an amateur station may use on the 12-meter band?

SelectAnswer
A1500 watts PEP output
B50 watts PEP output
C200 watts PEP output
DAn effective radiated power equivalent to 100 watts from a half-wave dipole

6. - G1D09

How long is a Certificate of Successful Completion of Examination (CSCE) valid for exam element credit?

SelectAnswer
A365 days
BFor as long as your current license is valid
C180 days
D30 days

7. - G1E12

When may third-party messages be transmitted via remote control?

SelectAnswer
AOnly when the message is intended for licensed radio amateurs
BOnly when the message is intended for third parties in areas where licensing is controlled by the FCC
CUnder any circumstances in which third party messages are permitted by FCC rules
DUnder no circumstances except for emergencies

8. - G2A07

Which of the following statements is true of single sideband (SSB)?

SelectAnswer
ASSB is the only voice mode authorized on the 20-, 15-, and 10-meter amateur bands
BOnly one sideband is transmitted; the other sideband and carrier are suppressed
CSSB is the only voice mode authorized on the 160-, 75-, and 40-meter amateur bands
DOnly one sideband and the carrier are transmitted; the other sideband is suppressed

9. - G2B09

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

SelectAnswer
AOnly a person holding an FCC-issued amateur operator license
BOnly a RACES net control operator
CAny control operator when normal communication systems are operational
DA person holding an FCC-issued amateur operator license or an appropriate government official

10. - G2C02

What should you do if a CW station sends “QRS?”

SelectAnswer
ASend slower
BChange frequency
CIncrease your power
DRepeat everything twice

11. - G2D11

Why are signal reports typically exchanged at the beginning of an HF contact?

SelectAnswer
ATo allow each station to calibrate their frequency display
BTo be sure the contact will count for award programs
CTo allow each station to operate according to conditions
DTo follow standard radiogram structure

12. - G2E13

What is another name for a Winlink Remote Message Server?

SelectAnswer
APrinter/Server
BTerminal Node Controller
CGateway
DRJ-45

13. - G3A06

What is a geomagnetic storm?

SelectAnswer
AA temporary disturbance in Earth’s geomagnetic field
BA thunderstorm that affects radio propagation
CA sudden drop in the solar flux index
DRipples in the geomagnetic force

14. - G3B05

How does the ionosphere affect radio waves with frequencies below the MUF and above the LUF?

SelectAnswer
AThey pass through the ionosphere
BThey are refracted back to Earth
CThey are refracted and trapped in the ionosphere to circle Earth
DThey are amplified by interaction with the ionosphere

15. - G3C05

Why is long-distance communication on the 40-, 60-, 80-, and 160-meter bands more difficult during the day?

SelectAnswer
AThe F region is unstable during daylight hours
BThe D region absorbs signals at these frequencies during daylight hours
CThe F region absorbs signals at these frequencies during daylight hours
DThe E region is unstable during daylight hours

16. - G4A08

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

SelectAnswer
AMinimum SWR on the antenna
BDesired power output without exceeding maximum allowable plate current
CHighest plate voltage while minimizing grid current
DMinimum plate current without exceeding maximum allowable grid current

17. - G4B09

When is an analog multimeter preferred to a digital multimeter?

SelectAnswer
AWhen high precision is desired
BWhen adjusting circuits for maximum or minimum values
CWhen measuring the frequency of an oscillator
DWhen testing logic circuits

18. - G4C01

Which of the following might be useful in reducing RF interference to audio frequency circuits?

SelectAnswer
AForward-biased diode
BBypass inductor
CBypass capacitor
DReverse-biased diode

19. - G4D11

How close to the upper edge of a band’s phone segment should your displayed carrier frequency be when using 3 kHz wide USB?

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

20. - G4E05

Which of the following most limits an HF mobile installation?

SelectAnswer
A“Picket fencing”
BEfficiency of the electrically short antenna
CFCC rules limiting mobile output power on the 75-meter band
DThe wire gauge of the DC power line to the transceiver

21. - G5A05

How does an inductor react to AC?

SelectAnswer
AAs the frequency of the applied AC increases, the reactance increases
BAs the amplitude of the applied AC increases, the reactance increases
CAs the amplitude of the applied AC increases, the reactance decreases
DAs the frequency of the applied AC increases, the reactance decreases

22. - G5B12

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

SelectAnswer
A346 volts
B173 volts
C245 volts
D692 volts

23. - G5C02

What is the output voltage if an input signal is applied to the secondary winding of a 4:1 voltage step-down transformer instead of the primary winding?

SelectAnswer
AThe input voltage is multiplied by 4
BAdditional resistance must be added in parallel with the secondary to prevent overload
CAdditional resistance must be added in series with the primary to prevent overload
DThe input voltage is divided by 4

24. - G6A03

What is the approximate forward threshold voltage of a germanium diode?

SelectAnswer
A1.0 volts
B0.3 volts
C0.7 volts
D0.1 volt

25. - G6B08

How is an LED biased when emitting light?

SelectAnswer
AAt the Zener voltage
BReverse biased
CForward biased
DIn the tunnel-effect region

26. - G7A05

What portion of the AC cycle is converted to DC by a half-wave rectifier?

SelectAnswer
A360 degrees
B270 degrees
C180 degrees
D90 degrees

27. - G7B09

What determines the frequency of an LC oscillator?

SelectAnswer
AThe inductance and capacitance in the tank circuit
BThe time delay of the lag circuit
CThe number of stages in the counter
DThe number of stages in the divider

28. - G7C09

What is the phase difference between the I and Q RF signals that software-defined radio (SDR) equipment uses for modulation and demodulation?

SelectAnswer
A180 degrees
BZero
C90 degrees
D45 degrees

29. - G8A05

What type of modulation varies the instantaneous power level of the RF signal?

SelectAnswer
APhase modulation
BAmplitude modulation
CFrequency modulation
DPower modulation

30. - G8B03

What is another term for the mixing of two RF signals?

SelectAnswer
ASynthesizing
BPhase inversion
CFrequency inversion
DHeterodyning

31. - G8C10

How does forward error correction (FEC) allow the receiver to correct data errors?

SelectAnswer
ABy transmitting redundant information with the data
BBy using a parity bit with each character
CBy controlling transmitter output power for optimum signal strength
DBy using the Varicode character set

32. - G9A08

If the SWR on an antenna feed line is 5:1, and a matching network at the transmitter end of the feed line is adjusted to present a 1:1 SWR to the transmitter, what is the resulting SWR on the feed line?

SelectAnswer
ABetween 1:1 and 5:1 depending on the reflected power at the transmitter
BBetween 1:1 and 5:1 depending on the characteristic impedance of the line
C5:1
D1:1

33. - G9B04

What is the radiation pattern of a dipole antenna in free space in a plane containing the conductor?

SelectAnswer
AIt is a circle (equal radiation in all directions)
BIt has a pair of lobes on one side of the antenna and a single lobe on the other side
CIt is a figure-eight off both ends of the antenna
DIt is a figure-eight at right angles to the antenna

34. - G9C08

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

SelectAnswer
AThe magnitude of the maximum vertical angle of radiation
BThe direction of maximum radiated field strength from the antenna
CThe point of maximum current in a radiating antenna element
DThe maximum voltage standing wave point on a radiating element

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
AIn the plane of the loop
BBroadside to the loop
CBroadside and in the plane of the loop
DElectrically small loops are omnidirectional