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. - G0A04

What does “time averaging” mean when evaluating RF radiation exposure?

Select	Answer
A	The average amount of power developed by the transmitter over a specific 24-hour period
B	The total time of the exposure
C	The average time it takes RF radiation to have any long-term effect on the body
D	The total RF exposure averaged over a certain period

2. - G0B06

Which of the following is covered by the National Electrical Code?

Select	Answer
A	Electrical safety of the station
B	Acceptable bandwidth limits
C	Acceptable modulation limits
D	RF exposure limits of the human body

3. - G1A04

Which of the following amateur bands is restricted to communication only on specific channels, rather than frequency ranges?

Select	Answer
A	60 meters
B	12 meters
C	30 meters
D	11 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 are limited to those expressly listed in Part 97 of the FCC rules
C	They may be used if they do not obscure the meaning of a message
D	Only “Q” signals are permitted

5. - G1C01

What is the maximum transmitter power an amateur station may use on 10.140 MHz?

Select	Answer
A	200 watts PEP output
B	2000 watts PEP output
C	1000 watts PEP output
D	1500 watts PEP output

6. - G1D02

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

Select	Answer
A	None, only Amateur Extra class licensees may be accredited
B	General and Technician
C	Amateur Extra, General, and Technician
D	Technician only

7. - G1E08

What is the maximum PEP output allowed for spread spectrum transmissions?

Select	Answer
A	100 watts
B	10 watts
C	100 milliwatts
D	1500 watts

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	Double sideband
D	Upper sideband

9. - G2B01

Which of the following is true concerning access to frequencies?

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

10. - G2C08

What prosign is sent to indicate the end of a formal message when using CW?

Select	Answer
A	KN
B	AR
C	SK
D	BK

11. - G2D04

Which of the following describes an azimuthal projection map?

Select	Answer
A	A map that shows accurate land masses
B	A map that shows the number of degrees longitude that an amateur satellite appears to move westward at the equator with each orbit
C	A map that shows true bearings and distances from a specific location
D	A map that shows the angle at which an amateur satellite crosses the equator

12. - G2E12

Which of the following describes Winlink?

Select	Answer
A	An amateur radio wireless network to send and receive email on the internet
B	A form of Packet Radio
C	A wireless network capable of both VHF and HF band operation
D	All of the above

13. - G3A05

What is the solar flux index?

Select	Answer
A	A measure of the highest frequency that is useful for ionospheric propagation between two points on Earth
B	Another name for the American sunspot number
C	A count of sunspots that is adjusted for solar emissions
D	A measure of solar radiation with a wavelength of 10.7 centimeters

14. - G3B03

Which frequency will have the least attenuation for long-distance skip propagation?

Select	Answer
A	Just above the LUF
B	Just below the MUF
C	Just above the critical frequency
D	Just below the critical frequency

15. - G3C01

Which ionospheric region is closest to the surface of Earth?

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

16. - G4A03

How does a noise blanker work?

Select	Answer
A	By reducing receiver gain during a noise pulse
B	By redirecting noise pulses into a filter capacitor
C	By clipping noise peaks
D	By temporarily increasing received bandwidth

17. - G4B09

When is an analog multimeter preferred to a digital multimeter?

Select	Answer
A	When testing logic circuits
B	When measuring the frequency of an oscillator
C	When high precision is desired
D	When adjusting circuits for maximum or minimum values

18. - G4C12

Why must all metal enclosures of station equipment be grounded?

Select	Answer
A	It ensures that the neutral wire is grounded
B	It prevents signal overload
C	It ensures that hazardous voltages cannot appear on the chassis
D	It prevents a blown fuse in the event of an internal short circuit

19. - G4D02

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

Select	Answer
A	It reduces harmonic distortion
B	It increases peak power
C	It increases average power
D	It reduces intermodulation distortion

20. - G4E02

What is the purpose of a corona ball on an HF mobile antenna?

Select	Answer
A	To reduce the chance of damage if the antenna should strike an object
B	To reduce RF voltage discharge from the tip of the antenna while transmitting
C	To increase the “Q” of the antenna
D	To narrow the operating bandwidth of the antenna

21. - G5A09

What unit is used to measure reactance?

Select	Answer
A	Farad
B	Siemens
C	Ampere
D	Ohm

22. - G5B12

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

Select	Answer
A	346 volts
B	692 volts
C	173 volts
D	245 volts

23. - G5C14

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

Select	Answer
A	An inductor in series
B	A capacitor in parallel
C	An inductor in parallel
D	A capacitor in series

24. - G6A05

What is the approximate forward threshold voltage of a silicon junction diode?

Select	Answer
A	0.7 volts
B	0.3 volts
C	1.0 volts
D	0.1 volt

25. - G6B07

Which of the following describes a type N connector?

Select	Answer
A	A small bayonet connector used for data circuits
B	A low noise figure VHF connector
C	A moisture-resistant RF connector useful to 10 GHz
D	A nickel plated version of the PL-259

26. - G7A05

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

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

27. - G7B06

What is a shift register?

Select	Answer
A	An analog mixer
B	A clocked array of circuits that passes data in steps along the array
C	A digital mixer
D	An array of operational amplifiers used for tri-state arithmetic operations

28. - G7C09

What is the phase difference between the I and Q RF signals that software-defined radio (SDR) equipment uses for modulation and demodulation?

Select	Answer
A	180 degrees
B	Zero
C	90 degrees
D	45 degrees

29. - G8A11

What is the modulation envelope of an AM signal?

Select	Answer
A	Spurious signals that envelop nearby frequencies
B	The waveform created by connecting the peak values of the modulated signal
C	The carrier frequency that contains the signal
D	The bandwidth of the modulated signal

30. - G8B13

Which of the following is an odd-order intermodulation product of frequencies F1 and F2?

Select	Answer
A	All these choices are correct
B	3F1-F2
C	5F1-3F2
D	2F1-F2

31. - G8C02

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

Select	Answer
A	MFSK16
B	PSK31
C	SSB-SC
D	WSPR

32. - G9A05

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

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

33. - G9B01

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

Select	Answer
A	It is more effective on the lower HF bands than on the higher bands
B	It must be longer than 1 wavelength
C	It produces only vertically polarized radiation
D	Station equipment may carry significant RF current

34. - G9C12

Which of the following is a characteristic of using a gamma match with a Yagi antenna?

Select	Answer
A	It does not require the driven element to be insulated from the boom
B	It is useful for matching multiband antennas
C	All these choices are correct
D	It does not require any inductors or capacitors

35. - G9D03

In which direction is the maximum radiation from a VHF/UHF “halo” antenna?

Select	Answer
A	Broadside to the plane of the halo
B	On the same side as the feed point
C	Omnidirectional in the plane of the halo
D	Opposite the feed point