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

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1. - G0A02

Which of the following properties is important in estimating whether an RF signal exceeds the maximum permissible exposure (MPE)?

SelectAnswer
AIts frequency
BIts duty cycle
CAll these choices are correct
DIts power density

2. - G0B01

Which wire or wires in a four-conductor connection should be attached to fuses or circuit breakers in a device operated from a 240 VAC single phase source?

SelectAnswer
AAll wires
BOnly the two wires carrying voltage
COnly the ground wire
DOnly the neutral wire

3. - G1A05

Which of the following frequencies is in the General class portion of the 40-meter band in ITU Region 2?

SelectAnswer
A7.250 MHz
B40.500 MHz
C7.500 MHz
D40.200 MHz

4. - G1B03

Which of the following is a purpose of a beacon station as identified in the FCC rules?

SelectAnswer
AIdentifying net frequencies
BAutomatic identification of repeaters
CObservation of propagation and reception
DTransmission of bulletins of general interest to Amateur Radio licensees

5. - G1C04

Which of the following limitations apply to transmitter power on every amateur band?

SelectAnswer
AEffective radiated power cannot exceed 1500 watts
BPower must be limited to 200 watts when using data transmissions
CPower should be limited as necessary to avoid interference to another radio service on the frequency
DOnly the minimum power necessary to carry out the desired communications should be used

6. - G1D02

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

SelectAnswer
AGeneral and Technician
BAmateur Extra, General, and Technician
CTechnician only
DGeneral only

7. - G1E06

The frequency allocations of which ITU region apply to radio amateurs operating in North and South America?

SelectAnswer
ARegion 4
BRegion 1
CRegion 3
DRegion 2

8. - G2A02

Which of the following modes is most commonly used for voice communications on the 160-meter, 75-meter, and 40-meter bands?

SelectAnswer
ALower sideband
BDouble sideband
CUpper sideband
DVestigial sideband

9. - G2B07

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

SelectAnswer
AAll these choices are correct
BFollow the voluntary band plan for the operating mode you intend to use
CIdentify your station by transmitting your call sign at least 3 times
DCheck to see if the channel is assigned to another station

10. - G2C02

What should you do if a CW station sends "QRS?"

SelectAnswer
ARepeat everything twice
BIncrease your power
CSend slower
DChange frequency

11. - G2D11

Which of the following is typical of the lower HF frequencies during the summer?

SelectAnswer
AHeavy distortion on signals due to photon absorption
BHigh levels of atmospheric noise or "static"
CPoor propagation at any time of day
DWorld-wide propagation during the daylight hours

12. - G2E13

Which communication system sometimes uses the internet to transfer messages?

SelectAnswer
ASKYWARN
BRTTY
CARES
DWinlink

13. - G3A10

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

SelectAnswer
ALong term oscillations in the upper atmosphere
BThe position of the moon in its orbit
CCyclic variation in Earth's radiation belts
DThe sun's rotation on its axis

14. - G3B08

What does MUF stand for?

SelectAnswer
AThe Minimum Usable Frequency during a 24-hour period
BThe Maximum Usable Frequency for communications between two points
CThe Maximum Usable Frequency during a 24-hour period
DThe Minimum Usable Frequency for communications between two points

15. - G3C03

Why is the F2 region mainly responsible for the longest distance radio wave propagation?

SelectAnswer
ABecause of the Doppler effect
BBecause of meteor trails at that level
CBecause it is the highest ionospheric region
DBecause it is the densest ionospheric layer

16. - G4A17

What happens as the noise reduction control level in a receiver is increased?

SelectAnswer
AReceived frequency may shift several kHz
BReceived frequency may become unstable
CCW signals may become severely attenuated
DReceived signals may become distorted

17. - G4B05

Why is high input impedance desirable for a voltmeter?

SelectAnswer
AIt improves the resolution of the readings
BIt decreases the loading on circuits being measured
CIt decreases battery consumption in the meter
DIt improves the frequency response

18. - G4C04

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

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

19. - G4D01

What is the purpose of a speech processor as used in a modern transceiver?

SelectAnswer
AIncrease the intelligibility of transmitted phone signals during poor conditions
BDecrease high-frequency voice output to prevent out-of-band operation
CPrevent distortion of voice signals
DIncrease transmitter bass response for more natural-sounding SSB signals

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 resistor wire
BTo the alternator or generator using resistor wire
CTo the battery using heavy-gauge wire
DTo the alternator or generator using heavy-gauge wire

21. - G5A11

Which of the following describes one method of impedance matching between two AC circuits?

SelectAnswer
AInsert an LC network between the two circuits
BInsert a circulator between the two circuits
CIncrease the power output of the first circuit
DReduce the power output of the first circuit

22. - G5B04

How many watts of electrical power are used by a 12 VDC light bulb that draws 0.2 amperes?

SelectAnswer
A60 watts
B2.4 watts
C24 watts
D6 watts

23. - G5C17

What is the value in nanofarads (nF) of a 22,000 picofarad (pF) capacitor?

SelectAnswer
A2.2
B22
C0.22
D220

24. - G6A06

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

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

25. - G6B05

What is meant when memory is characterized as non-volatile?

SelectAnswer
AIt is resistant to high temperatures
BIt is resistant to radiation damage
CThe stored information is maintained even if power is removed
DThe stored information cannot be changed once written

26. - G7A05

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

SelectAnswer
A180 degrees
B270 degrees
C360 degrees
D90 degrees

27. - G7B07

Which of the following are basic components of a sine wave oscillator?

SelectAnswer
AA frequency multiplier and a mixer
BA filter and an amplifier operating in a feedback loop
CAn amplifier and a divider
DA circulator and a filter operating in a feed-forward loop

28. - G7C07

What is the simplest combination of stages that implement a superheterodyne receiver?

SelectAnswer
AHF oscillator, mixer, detector
BHF oscillator, prescaler, audio amplifier
CRF amplifier, mixer, IF discriminator
DRF amplifier, detector, audio amplifier

29. - G8A09

What type of modulation is used by the FT8 digital mode?

SelectAnswer
ADirect sequence spread spectrum
BVestigial sideband
C8-tone frequency shift keying
DAmplitude compressed AM

30. - G8B02

If a receiver mixes a 13.800 MHz VFO with a 14.255 MHz received signal to produce a 455 kHz intermediate frequency (IF) signal, what type of interference will a 13.345 MHz signal produce in the receiver?

SelectAnswer
AMixer interference
BImage response
CIntermediate interference
DQuadrature noise

31. - G8C11

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

SelectAnswer
AHigh and low
BDot and dash
COn and off
DMark and space

32. - G9A10

What standing wave ratio will result when connecting a 50 ohm feed line to a non-reactive load having 10 ohm impedance?

SelectAnswer
A50:1
B1:5
C5:1
D2:1

33. - G9B04

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

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

34. - G9C03

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

SelectAnswer
AThe reflector is longer, and the director is shorter
BThey are all the same length
CThe reflector is shorter, and the director is longer
DRelative length depends on the frequency of operation

35. - G9D04

What is the primary purpose of antenna traps?

SelectAnswer
ATo permit multiband operation
BTo provide balanced feed-point impedance
CTo prevent out-of-band operation
DTo notch spurious frequencies