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

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1. - G0A02

Which of the following is used to determine RF exposure from a transmitted signal?

SelectAnswer
AIts duty cycle
BAll these choices are correct
CIts power density
DIts frequency

2. - G0B11

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

SelectAnswer
ALightning grounds must be connected to all ungrounded wiring
BThey must be bonded together with all other grounds
CThey must be bonded to all buried water and gas lines
DBends in ground wires must be made as close as possible to a right angle

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

4. - G1B01

What is the maximum height above ground for an antenna structure not near a public use airport without requiring notification to the FAA and registration with the FCC?

SelectAnswer
A50 feet
B250 feet
C100 feet
D200 feet

5. - G1C03

What is the maximum bandwidth permitted by FCC rules for amateur radio stations transmitting on USB frequencies in the 60-meter band?

SelectAnswer
A2.8 kHz
B3 kHz
C1.8 kHz
D5.6 kHz

6. - G1D02

What license examinations may you administer as an accredited Volunteer Examiner holding a General class operator license?

SelectAnswer
AAmateur Extra, General, and Technician
BNone, only Amateur Extra class licensees may be accredited
CTechnician only
DGeneral and Technician

7. - G1E03

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

SelectAnswer
ANo third-party traffic may be transmitted
BThe station initiating the contact must be under local or remote control
CThe interrogating transmission must be made by another automatically controlled station
DThe control operator of the interrogating station must hold an Amateur Extra class license

8. - G2A09

Why do most amateur stations use lower sideband on the 160-, 75-, and 40-meter bands?

SelectAnswer
ABecause it is fully compatible with an AM detector
BIt is commonly accepted amateur practice
CLower sideband is the only sideband legal on these frequency bands
DLower sideband is more efficient than upper sideband at these frequencies

9. - G2B03

What is good amateur practice if propagation changes during a contact creating interference from other stations using the frequency?

SelectAnswer
AAdvise the interfering stations that you are on the frequency and that you have priority
BSwitch to the opposite sideband
CDecrease power and continue to transmit
DAttempt to resolve the interference problem with the other stations in a mutually acceptable manner

10. - G2C05

What is the best speed to use when answering a CQ in Morse code?

SelectAnswer
AAt the standard calling speed of 5 wpm
BThe fastest speed at which you are comfortable copying, but no slower than the CQ
CThe fastest speed at which you are comfortable copying, but no faster than the CQ
DAt the standard calling speed of 10 wpm

11. - G2D04

Which of the following describes an azimuthal projection map?

SelectAnswer
AA map that shows accurate land masses
BA map that shows true bearings and distances from a specific location
CA map that shows the number of degrees longitude that an amateur satellite appears to move westward at the equator with each orbit
DA map that shows the angle at which an amateur satellite crosses the equator

12. - G2E15

Which of the following is a common location for FT8?

SelectAnswer
AApproximately 14.110 MHz to 14.113 MHz
BAnywhere in the CW portion of the band
CAnywhere in the voice portion of the band
DApproximately 14.074 MHz to 14.077 MHz

13. - G3A06

What is a geomagnetic storm?

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

14. - G3B07

What does LUF stand for?

SelectAnswer
AThe Lowest Usable Frequency during a 24-hour period
BLowest Usable Frequency during the past 60 minutes
CThe Lowest Usable Frequency for communications between two specific points
DLowest Usable Frequency for communications to any point outside a 100-mile radius

15. - G3C11

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

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

16. - G4A07

What happens as a receiver’s noise reduction control level is increased?

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

17. - G4B07

What signals are used to conduct a two-tone test?

SelectAnswer
ATwo audio signals of the same frequency shifted 90 degrees
BTwo audio frequency range square wave signals of equal amplitude
CTwo swept frequency tones
DTwo non-harmonically related audio signals

18. - G4C05

What is a possible cause of high voltages that produce RF burns?

SelectAnswer
AInsulated wire has been used for the ground wire
BThe ground wire has high impedance on that frequency
CFlat braid rather than round wire has been used for the ground wire
DThe ground rod is resonant

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

20. - G4E10

Why should a series diode be connected between a solar panel and a storage battery that is being charged by the panel?

SelectAnswer
ATo limit the current flowing from the panel to a safe value
BTo prevent damage to the battery due to excessive voltage at high illumination levels
CTo prevent discharge of the battery through the panel during times of low or no illumination
DTo prevent overload by regulating the charging voltage

21. - G5A04

Which of the following is opposition to the flow of alternating current in a capacitor?

SelectAnswer
AReactance
BAdmittance
CReluctance
DConductance

22. - G5B12

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

SelectAnswer
A692 volts
B173 volts
C346 volts
D245 volts

23. - G5C06

What is the voltage output of a transformer with a 500-turn primary and a 1500-turn secondary when 120 VAC is applied to the primary?

SelectAnswer
A360 volts
B120 volts
C25.5 volts
D40 volts

24. - G6A12

What is the primary purpose of a screen grid in a vacuum tube?

SelectAnswer
ATo increase the control grid resistance
BTo increase efficiency
CTo decrease plate resistance
DTo reduce grid-to-plate capacitance

25. - G6B04

What is a typical upper frequency limit for low SWR operation of 50-ohm BNC connectors?

SelectAnswer
A500 MHz
B40 GHz
C50 MHz
D4 GHz

26. - G7A10

Which symbol in figure G7-1 represents a Zener diode?

SelectAnswer
ASymbol 1
BSymbol 11
CSymbol 4
DSymbol 5

27. - G7B02

Which of these classes of amplifiers has the highest efficiency?

SelectAnswer
AClass AB
BClass C
CClass A
DClass B

28. - G7C11

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

SelectAnswer
AModulation
BAll these choices are correct
CDetection
DFiltering

29. - G8A11

What is the modulation envelope of an AM signal?

SelectAnswer
AThe waveform created by connecting the peak values of the modulated signal
BThe carrier frequency that contains the signal
CThe bandwidth of the modulated signal
DSpurious signals that envelop nearby frequencies

30. - G8B08

Why is it important to know the duty cycle of the mode you are using when transmitting?

SelectAnswer
ATo allow time for the other station to break in during a transmission
BTo aid in tuning your transmitter
CTo prevent overmodulation
DSome modes have high duty cycles that could exceed the transmitter’s average power rating

31. - G8C02

Which digital mode is used as a low-power beacon for assessing HF propagation?

SelectAnswer
AMFSK16
BSSB-SC
CWSPR
DPSK31

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
A5:1
BBetween 1:1 and 5:1 depending on the reflected power at the transmitter
C1:1
DBetween 1:1 and 5:1 depending on the characteristic impedance of the line

33. - G9B01

What is a characteristic of a random-wire HF antenna connected directly to the transmitter?

SelectAnswer
AStation equipment may carry significant RF current
BIt must be longer than 1 wavelength
CIt produces only vertically polarized radiation
DIt is more effective on the lower HF bands than on the higher bands

34. - G9C09

In free space, 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 6 dB higher
BApproximately 9 dB higher
CApproximately 1.5 dB higher
DApproximately 3 dB higher

35. - G9D07

Which of the following describes a log-periodic antenna?

SelectAnswer
ASWR varies periodically as a function of boom length
BGain varies logarithmically as a function of frequency
CElement length and spacing vary logarithmically along the boom
DImpedance varies periodically as a function of frequency

Figure G7-1