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

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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?

Select	Answer
A	Contact the FCC for permission to transmit
B	Use an FCC-approved band-pass filter
C	Perform an RF Exposure Evaluation in accordance with FCC OET Bulletin 65
D	Perform an RF exposure evaluation in accordance with World Meteorological Organization guidelines

2. - G0B02

According to the National Electrical Code, what is the minimum wire size that may be used safely for wiring with a 20-ampere circuit breaker?

Select	Answer
A	AWG number 12
B	AWG number 20
C	AWG number 8
D	AWG number 16

3. - G1A01

On which HF and/or MF amateur bands are there portions where General class licensees cannot transmit?

Select	Answer
A	160 meters, 60 meters, 15 meters, and 12 meters
B	80 meters, 20 meters, 15 meters, and 10 meters
C	60 meters, 30 meters, 17 meters, and 12 meters
D	80 meters, 40 meters, 20 meters, and 15 meters

4. - G1B07

What are the restrictions on the use of abbreviations or procedural signals in the amateur service?

Select	Answer
A	They are not permitted
B	They may be used if they do not obscure the meaning of a message
C	They are limited to those expressly listed in Part 97 of the FCC rules
D	Only “Q” signals are permitted

5. - G1C02

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

Select	Answer
A	200 watts PEP output
B	An effective radiated power equivalent to 100 watts from a half-wave dipole
C	1500 watts PEP output
D	50 watts PEP output

6. - G1D04

Who must observe the administration of a Technician class license examination?

Select	Answer
A	At least two Volunteer Examiners of Technician class or higher
B	At least three Volunteer Examiners of General class or higher
C	At least two Volunteer Examiners of General class or higher
D	At least three Volunteer Examiners of Technician class

7. - G1E01

Which of the following would disqualify a third party from participating in sending a message via an amateur station?

Select	Answer
A	All these choices are correct
B	The third party’s amateur license has been revoked and not reinstated
C	The third party is speaking in a language other than English
D	The third party is not a US citizen

8. - G2A03

Which mode is most commonly used for SSB voice communications in the VHF and UHF bands?

Select	Answer
A	Suppressed sideband
B	Lower sideband
C	Upper sideband
D	Double sideband

9. - G2B01

Which of the following is true concerning access to frequencies?

Select	Answer
A	QSOs in progress have priority
B	Contest operations should yield to non-contest use of frequencies
C	Nets have priority
D	Except during emergencies, no amateur station has priority access to any frequency

10. - G2C04

What does the Q signal “QRL?” mean?

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

11. - G2D08

Why do many amateurs keep a station log?

Select	Answer
A	The FCC requires a log of all international contacts
B	The FCC requires a log of all international third-party traffic
C	To help with a reply if the FCC requests information about your station
D	The log provides evidence of operation needed to renew a license without retest

12. - G2E07

Which of the following is required when using FT8?

Select	Answer
A	A special hardware modem
B	Computer time accurate to within approximately 1 second
C	A vertically polarized antenna
D	Receiver attenuator set to -12 dB

13. - G3A07

At what point in the solar cycle does the 20-meter band usually support worldwide propagation during daylight hours?

Select	Answer
A	At the summer solstice
B	Only at the minimum point
C	Only at the maximum point
D	At any point

14. - G3B10

What is the approximate maximum distance along the Earth’s surface normally covered in one hop using the E region?

Select	Answer
A	2,500 miles
B	12,000 miles
C	1,200 miles
D	180 miles

15. - G3C11

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

Select	Answer
A	The F2 region
B	The D region
C	The E region
D	The F1 region

16. - G4A05

Why is automatic level control (ALC) used with an RF power amplifier?

Select	Answer
A	To reduce harmonic radiation
B	To increase overall efficiency
C	To balance the transmitter audio frequency response
D	To prevent excessive drive

17. - G4B03

Which of the following is the best instrument to use for checking the keying waveform of a CW transmitter?

Select	Answer
A	A wavemeter
B	A sidetone monitor
C	A field strength meter
D	An oscilloscope

18. - G4C09

How can the effects of ground loops be minimized?

Select	Answer
A	Bond equipment enclosures together
B	Connect the AC neutral conductor to the ground wire
C	Avoid using lock washers and star washers when making ground connections
D	Connect all ground conductors in series

19. - G4D06

How much change in signal strength is typically represented by one S unit?

Select	Answer
A	12 dB
B	18 dB
C	6 dB
D	15 dB

20. - G4E05

Which of the following most limits an HF mobile installation?

Select	Answer
A	FCC rules limiting mobile output power on the 75-meter band
B	“Picket fencing”
C	Efficiency of the electrically short antenna
D	The wire gauge of the DC power line to the transceiver

21. - G5A08

What is impedance?

Select	Answer
A	The product of current and voltage
B	The ratio of current to voltage
C	The product of current and reactance
D	The ratio of voltage to current

22. - G5B03

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

Select	Answer
A	200 watts
B	0.5 watts
C	3200 watts
D	400 watts

23. - G5C09

What is the capacitance of three 100-microfarad capacitors connected in series?

Select	Answer
A	33.3 microfarads
B	0.33 microfarads
C	3.0 microfarads
D	300 microfarads

24. - G6A12

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

Select	Answer
A	To reduce grid-to-plate capacitance
B	To increase efficiency
C	To increase the control grid resistance
D	To decrease plate resistance

25. - G6B03

Which of the following is an advantage of CMOS integrated circuits compared to TTL integrated circuits?

Select	Answer
A	Better suited for power supply regulation
B	Better suited for RF amplification
C	Low power consumption
D	High power handling capability

26. - G7A06

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

Select	Answer
A	180 degrees
B	90 degrees
C	270 degrees
D	360 degrees

27. - G7B10

Which of the following describes a linear amplifier?

Select	Answer
A	An amplifier in which the output preserves the input waveform
B	A Class C high efficiency amplifier
C	An amplifier used as a frequency multiplier
D	Any RF power amplifier used in conjunction with an amateur transceiver

28. - G7C10

What is an advantage of using I-Q modulation with software-defined radios (SDRs)?

Select	Answer
A	The need for high resolution analog-to-digital converters is eliminated
B	Minimum detectible signal level is reduced
C	All types of modulation can be created with appropriate processing
D	Automatic conversion of the signal from digital to analog

29. - G8A06

Which of the following is characteristic of QPSK31?

Select	Answer
A	Its encoding provides error correction
B	Its bandwidth is approximately the same as BPSK31
C	It is sideband sensitive
D	All these choices are correct

30. - G8B06

What is the total bandwidth of an FM phone transmission having 5 kHz deviation and 3 kHz modulating frequency?

Select	Answer
A	16 kHz
B	3 kHz
C	5 kHz
D	8 kHz

31. - G8C10

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

Select	Answer
A	By controlling transmitter output power for optimum signal strength
B	By using the Varicode character set
C	By transmitting redundant information with the data
D	By using a parity bit with each character

32. - G9A05

How does the attenuation of coaxial cable change with increasing frequency?

Select	Answer
A	Attenuation follows Marconi’s Law of Attenuation
B	Attenuation decreases
C	Attenuation is independent of frequency
D	Attenuation increases

33. - G9B06

Where should the radial wires of a ground-mounted vertical antenna system be placed?

Select	Answer
A	Parallel to the antenna element
B	At the center of the antenna
C	As high as possible above the ground
D	On the surface or buried a few inches below the ground

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?

Select	Answer
A	Approximately 9 dB higher
B	Approximately 1.5 dB higher
C	Approximately 6 dB higher
D	Approximately 3 dB higher

35. - G9D12

What is the common name of a dipole with a single central support?

Select	Answer
A	Inverted V
B	Inverted L
C	Sloper
D	Lazy H