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US Amateur Radio - General (Element 3, 2019-2023) Practice Test

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1. - G0A11

What precaution should you take if you install an indoor transmitting antenna?

SelectAnswer
AMake sure that MPE limits are not exceeded in occupied areas
BPosition the antenna along the edge of a wall to reduce parasitic radiation
CMake sure the antenna is properly shielded
DLocate the antenna close to your operating position to minimize feed-line radiation

2. - G0B14

What precaution should you take whenever you adjust or repair an antenna?

SelectAnswer
AWear a radiation badge
BEnsure that you and the antenna structure are grounded
CAll these choices are correct
DTurn off the transmitter and disconnect the feed line

3. - G1A12

Which of the following applies when the FCC rules designate the Amateur Service as a secondary user on a band?

SelectAnswer
AAmateur stations can use the band only during emergencies
BAmateur stations must record the call sign of the primary service station before operating on a frequency assigned to that station
CAmateur stations can use the band only if they do not cause harmful interference to primary users
DAmateur stations may only operate during specific hours of the day, while primary users are permitted 24-hour use of the band

4. - G1B08

When choosing a transmitting frequency, what should you do to comply with good amateur practice?

SelectAnswer
AAll these choices are correct
BEnsure that the frequency and mode selected are within your license class privileges
CMonitor the frequency before transmitting
DFollow generally accepted band plans agreed to by the Amateur Radio community

5. - G1C10

What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 10-meter band?

SelectAnswer
A1200 baud
B19.6 kilobaud
C56 kilobaud
D300 baud

6. - G1D02

What license examinations may you administer when you are an accredited VE holding a General class operator license?

SelectAnswer
AAmateur Extra, General, and Technician
BGeneral only
CTechnician only
DGeneral and Technician

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?

SelectAnswer
AWhen operating within one mile of an FCC Monitoring Station
BAll these choices are correct
CWhen using a band where the Amateur Service is secondary
DWhen a station is transmitting spread spectrum emissions

8. - G2A07

Which of the following statements is true of the single sideband voice mode?

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

9. - G2B02

What is the first thing you should do if you are communicating with another amateur station and hear a station in distress break in?

SelectAnswer
AImmediately cease all transmissions
BContinue your communication because you were on the frequency first
CAcknowledge the station in distress and determine what assistance may be needed
DChange to a different frequency

10. - G2C04

What does the Q signal "QRL?" mean?

SelectAnswer
A"Are you listening only for a specific station?"
B"Are you operating full break-in?" or "Can you operate full break-in?"
C"Will you keep the frequency clear?"
D"Are you busy?" or "Is this frequency in use?"

11. - G2D08

What is a reason why many amateurs keep a station log?

SelectAnswer
ATo help with a reply if the FCC requests information
BThe ITU requires a log of all international third-party traffic
CThe ITU requires a log of all international contacts
DThe log provides evidence of operation needed to renew a license without retest

12. - G2E13

Which communication system sometimes uses the internet to transfer messages?

SelectAnswer
ARTTY
BWinlink
CSKYWARN
DARES

13. - G3A04

Which of the following are least reliable for long-distance communications during periods of low solar activity?

SelectAnswer
A15 meters, 12 meters, and 10 meters
B30 meters and 20 meters
C60 meters and 40 meters
D80 meters and 160 meters

14. - G3B05

What usually happens to radio waves with frequencies below the MUF and above the LUF when they are sent into the ionosphere?

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

15. - G3C01

Which ionospheric layer is closest to the surface of Earth?

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

16. - G4A03

What is normally meant by operating a transceiver in "split" mode?

SelectAnswer
AThe transceiver is operating from an external power source
BThe transmitter is emitting an SSB signal, as opposed to DSB operation
CThe transceiver is set to different transmit and receive frequencies
DThe radio is operating at half power

17. - G4B15

What type of transmitter performance does a two-tone test analyze?

SelectAnswer
APercentage of carrier phase shift
BPercentage of frequency modulation
CPercentage of suppression of carrier and undesired sideband for SSB
DLinearity

18. - G4C04

What is the effect on an audio device when there is interference from a nearby CW transmitter?

SelectAnswer
ASeverely distorted audio
BA CW signal at a nearly pure audio frequency
COn-and-off humming or clicking
DA chirpy CW signal

19. - G4D08

What frequency range is occupied by a 3 kHz LSB signal when the displayed carrier frequency is set to 7.178 MHz?

SelectAnswer
A7.175 to 7.178 MHz
B7.178 to 7.181 MHz
C7.178 to 7.184 MHz
D7.1765 to 7.1795 MHz

20. - G4E07

Which of the following may cause receive interference in a radio installed in a vehicle?

SelectAnswer
AThe fuel delivery system
BAll these choices are correct
CThe vehicle control computer
DThe battery charging system

21. - G5A08

What is one reason to use an impedance matching transformer?

SelectAnswer
ATo reduce power supply ripple
BTo minimize radiation resistance
CTo minimize transmitter power output
DTo maximize the transfer of power

22. - G5B10

What percentage of power loss would result from a transmission line loss of 1 dB?

SelectAnswer
A20.6 percent
B12.2 percent
C10.9 percent
D25.9 percent

23. - G5C03

Which of the following components increases the total resistance of a resistor?

SelectAnswer
AA series capacitor
BA parallel resistor
CA parallel capacitor
DA series resistor

24. - G6A06

Which of the following is a reason not to use wire-wound resistors in an RF circuit?

SelectAnswer
AThe resistor's inductance could make circuit performance unpredictable
BThe resistor could overheat
CThe resistor's internal capacitance would detune the circuit
DThe resistor's tolerance value would not be adequate for such a circuit

25. - G6B09

Which of the following is a characteristic of a liquid crystal display?

SelectAnswer
AIt has relatively short lifetime
BIt consumes relatively high power
CIt offers a wide dynamic range
DIt utilizes ambient or back lighting

26. - G7A08

Which of the following is an advantage of a switchmode power supply as compared to a linear power supply?

SelectAnswer
AFewer circuit components are required
BHigh-frequency operation allows the use of smaller components
CFaster switching time makes higher output voltage possible
DAll these choices are correct

27. - G7B04

Which of the following describes the function of a two input NOR gate?

SelectAnswer
AOutput is high only when both inputs are high
BOutput is low only when both inputs are high
COutput is low when either or both inputs are high
DOutput is high when either or both inputs are low

28. - G7C06

What should be the impedance of a low-pass filter as compared to the impedance of the transmission line into which it is inserted?

SelectAnswer
ATwice the transmission line impedance
BAbout the same
CSubstantially lower
DSubstantially higher

29. - G8A06

Which of the following is characteristic of QPSK31?

SelectAnswer
AIts encoding provides error correction
BIt is sideband sensitive
CAll these choices are correct
DIts bandwidth is approximately the same as BPSK31

30. - G8B09

Why is it good to match receiver bandwidth to the bandwidth of the operating mode?

SelectAnswer
AIt improves impedance matching of the antenna
BIt results in the best signal-to-noise ratio
CIt is required by FCC rules
DIt minimizes power consumption in the receiver

31. - G8C04

Which of the following describes Baudot code?

SelectAnswer
AA 7-bit code with start, stop, and parity bits
BA 5-bit code with additional start and stop bits
CA code using SELCAL and LISTEN
DA code using error detection and correction

32. - G9A01

Which of the following factors determine the characteristic impedance of a parallel conductor antenna feed line?

SelectAnswer
AThe distance between the centers of the conductors and the radius of the conductors
BThe distance between the centers of the conductors and the length of the line
CThe frequency of the signal and the length of the line
DThe radius of the conductors and the frequency of the signal

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?

SelectAnswer
AIt steadily increases
BIt steadily decreases
CIt peaks at about 1/8 wavelength from the end
DIt is unaffected by the location of the feed point

34. - G9C09

How does the gain of two three-element, horizontally polarized Yagi antennas spaced vertically 1/2 wavelength apart typically compare to the gain of a single three-element Yagi?

SelectAnswer
AApproximately 9 dB higher
BApproximately 1.5 dB higher
CApproximately 6 dB higher
DApproximately 3 dB higher

35. - G9D02

What is the feed-point impedance of an end-fed half-wave antenna?

SelectAnswer
AApproximately 300 ohms
BApproximately 50 ohms
CVery low
DVery high