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

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1. - G0A06

What must you do if your station fails to meet the FCC RF exposure exemption criteria?

SelectAnswer
AUse an FCC-approved band-pass filter
BPerform an RF exposure evaluation in accordance with World Meteorological Organization guidelines
CPerform an RF Exposure Evaluation in accordance with FCC OET Bulletin 65
DContact the FCC for permission to transmit

2. - G0B08

What should be done before climbing a tower that supports electrically powered devices?

SelectAnswer
AUnground the base of the tower
BNotify the electric company that a person will be working on the tower
CAll these choices are correct
DMake sure all circuits that supply power to the tower are locked out and tagged

3. - G1A05

On which of the following frequencies are General class licensees prohibited from operating as control operator?

SelectAnswer
A21.275 MHz to 21.300 MHz
BAll these choices are correct
C28.000 MHz to 28.025 MHz
D7.125 MHz to 7.175 MHz

4. - G1B11

Who or what determines “good engineering and good amateur practice,” as applied to the operation of an amateur station in all respects not covered by the Part 97 rules?

SelectAnswer
AThe FCC
BThe IEEE
CThe ITU
DThe control operator

5. - G1C05

What is the limit for transmitter power on the 28 MHz band for a General Class control operator?

SelectAnswer
A1500 watts PEP output
B2000 watts PEP output
C100 watts PEP output
D1000 watts PEP output

6. - G1D07

Volunteer Examiners are accredited by what organization?

SelectAnswer
AThe Federal Communications Commission
BThe Wireless Telecommunications Bureau
CThe Universal Licensing System
DA Volunteer Examiner Coordinator

7. - G1E03

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

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

8. - G2A06

Which of the following is an advantage of using single sideband, as compared to other analog voice modes on the HF amateur bands?

SelectAnswer
AVery high-fidelity voice modulation
BLess bandwidth used and greater power efficiency
CEase of tuning on receive and immunity to impulse noise
DLess subject to interference from atmospheric static crashes

9. - G2B01

Which of the following is true concerning access to frequencies?

SelectAnswer
AContest operations should yield to non-contest use of frequencies
BExcept during emergencies, no amateur station has priority access to any frequency
CNets have priority
DQSOs in progress have priority

10. - G2C06

What does the term “zero beat” mean in CW operation?

SelectAnswer
ASending without error
BMatching the transmit frequency to the frequency of a received signal
COperating split to avoid interference on frequency
DMatching the speed of the transmitting station

11. - G2D10

What is QRP operation?

SelectAnswer
ALow-power transmit operation
BTransmission using Quick Response Protocol
CTraffic relay procedure net operation
DRemote piloted model control

12. - G2E14

What could be wrong if you cannot decode an RTTY or other FSK signal even though it is apparently tuned in properly?

SelectAnswer
AThe mark and space frequencies may be reversed
BAll these choices are correct
CYou may be listening on the wrong sideband
DYou may have selected the wrong baud rate

13. - G3A08

How can a geomagnetic storm affect HF propagation?

SelectAnswer
ADegrade high-latitude HF propagation
BImprove high-latitude HF propagation
CImprove ground wave propagation
DDegrade ground wave propagation

14. - G3B04

Which of the following is a way to determine current propagation on a desired band from your station?

SelectAnswer
AAll these choices are correct
BCheck the A-index
CSend a series of dots and listen for echoes
DUse a network of automated receiving stations on the internet to see where your transmissions are being received

15. - G3C11

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

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

16. - G4A13

What is the purpose of using a receive attenuator?

SelectAnswer
ATo reduce power consumption when operating from batteries
BTo reduce excessive audio level on strong signals
CTo prevent receiver overload from strong incoming signals
DTo reduce the transmitter power when driving a linear amplifier

17. - G4B01

What item of test equipment contains horizontal and vertical channel amplifiers?

SelectAnswer
AAn ammeter
BAn oscilloscope
CA signal generator
DAn ohmmeter

18. - G4C10

What could be a symptom caused by a ground loop in your station’s audio connections?

SelectAnswer
AYou receive reports of harmonic interference from your station
BThe SWR reading for one or more antennas is suddenly very high
CAn item of station equipment starts to draw excessive amounts of current
DYou receive reports of “hum” on your station’s transmitted signal

19. - G4D02

How does a speech processor affect a single sideband phone signal?

SelectAnswer
AIt reduces harmonic distortion
BIt reduces intermodulation distortion
CIt increases average power
DIt increases peak power

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

21. - G5A11

What letter is used to represent reactance?

SelectAnswer
AZ
BX
CY
DB

22. - G5B03

How many watts of electrical power are consumed if 400 VDC is supplied to an 800-ohm load?

SelectAnswer
A200 watts
B0.5 watts
C3200 watts
D400 watts

23. - G5C14

Which of the following components should be added to an inductor to increase the inductance?

SelectAnswer
AAn inductor in parallel
BAn inductor in series
CA capacitor in parallel
DA capacitor in series

24. - G6A09

Which of the following describes MOSFET construction?

SelectAnswer
AThe source is separated from the drain by a thin insulating layer
BThe source is formed by depositing metal on silicon
CThe gate is formed by a back-biased junction
DThe gate is separated from the channel by a thin insulating layer

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. - G7A05

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

SelectAnswer
A90 degrees
B270 degrees
C180 degrees
D360 degrees

27. - G7B04

In a Class A amplifier, what percentage of the time does the amplifying device conduct?

SelectAnswer
ALess than 50%
B50%
CMore than 50% but less than 100%
D100%

28. - G7C11

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

SelectAnswer
AAll these choices are correct
BDetection
CFiltering
DModulation

29. - G8A14

What is link margin?

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

30. - G8B10

What is the relationship between transmitted symbol rate and bandwidth?

SelectAnswer
ASymbol rate and bandwidth are not related
BHigher symbol rates require wider bandwidth
CLower symbol rates require wider bandwidth
DBandwidth is half the symbol rate

31. - G8C15

What does an FT8 signal report of +3 mean?

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

32. - G9A04

What causes reflected power at an antenna’s feed point?

SelectAnswer
AUsing more transmitter power than the antenna can handle
BA difference between feed line impedance and antenna feed point impedance
CFeeding the antenna with unbalanced feed line
DOperating an antenna at its resonant frequency

33. - G9B02

Which of the following is a common way to adjust the feed point impedance of an elevated quarter-wave ground-plane vertical antenna to be approximately 50 ohms?

SelectAnswer
ASlope the radials upward
BLengthen the radials beyond one wavelength
CSlope the radials downward
DCoil the radials

34. - G9C05

What is the primary effect of increasing boom length and adding directors to a Yagi antenna?

SelectAnswer
AFront-to-back ratio decreases
BResonant frequency is lower
CBeamwidth increases
DGain increases

35. - G9D01

Which of the following antenna types will be most effective as a near vertical incidence skywave (NVIS) antenna for short-skip communications on 40 meters during the day?

SelectAnswer
AA horizontal dipole placed between 1/10 and 1/4 wavelength above the ground
BA vertical antenna placed between 1/4 and 1/2 wavelength above the ground
CA horizontal dipole placed at approximately 1/2 wavelength above the ground
DA vertical dipole placed at approximately 1/2 wavelength above the ground