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. - G0A12

What stations are subject to the FCC rules on RF exposure?

Select	Answer
A	Only stations transmitting more than 500 watts PEP
B	Only stations with antennas lower than one wavelength above the ground
C	All stations with a time-averaged transmission of more than one milliwatt
D	All commercial stations; amateur radio stations are exempt

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 20
B	AWG number 16
C	AWG number 12
D	AWG number 8

3. - G1A02

On which of the following bands is phone operation prohibited?

Select	Answer
A	12 meters
B	17 meters
C	30 meters
D	160 meters

4. - G1B02

With which of the following conditions must beacon stations comply?

Select	Answer
A	The frequency must be coordinated with the National Beacon Organization
B	All these choices are correct
C	The frequency must be posted on the internet or published in a national periodical
D	No more than one beacon station may transmit in the same band from the same station location

5. - G1C08

What is the maximum symbol rate permitted for RTTY or data emission transmitted at frequencies below 28 MHz?

Select	Answer
A	300 baud
B	1200 baud
C	56 kilobaud
D	19.6 kilobaud

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	Technician only
D	Amateur Extra, General, and Technician

7. - G1E05

What are the restrictions on messages sent to a third party in a country with which there is a Third-Party Agreement?

Select	Answer
A	The message must be limited to no longer than 1 minute in duration and the name of the third party must be recorded in the station log
B	They must relate to amateur radio, or remarks of a personal character, or messages relating to emergencies or disaster relief
C	They must relate to emergencies or disaster relief
D	They must be for other licensed amateurs

8. - G2A10

Which of the following statements is true of VOX operation versus PTT operation?

Select	Answer
A	It provides more power output
B	The received signal is more natural sounding
C	It allows “hands free” operation
D	It occupies less bandwidth

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. - G2C05

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

Select	Answer
A	At the standard calling speed of 10 wpm
B	At the standard calling speed of 5 wpm
C	The fastest speed at which you are comfortable copying, but no faster than the CQ
D	The fastest speed at which you are comfortable copying, but no slower than the CQ

11. - G2D07

Which of the following are examples of the NATO Phonetic Alphabet?

Select	Answer
A	Alpha, Bravo, Charlie, Delta
B	Able, Baker, Charlie, Dog
C	America, Boston, Canada, Denmark
D	Adam, Boy, Charles, David

12. - G2E05

What is the standard sideband for JT65, JT9, FT4, or FT8 digital signal when using AFSK?

Select	Answer
A	SSB
B	LSB
C	USB
D	DSB

13. - G3A05

What is the solar flux index?

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

14. - G3B04

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

Select	Answer
A	All these choices are correct
B	Send a series of dots and listen for echoes
C	Check the A-index
D	Use a network of automated receiving stations on the internet to see where your transmissions are being received

15. - G3C04

What does the term “critical angle” mean, as applied to radio wave propagation?

Select	Answer
A	The lowest takeoff angle that will return a radio wave to Earth under specific ionospheric conditions
B	The long path azimuth of a distant station
C	The highest takeoff angle that will return a radio wave to Earth under specific ionospheric conditions
D	The short path azimuth of a distant station

16. - G4A13

What is the purpose of using a receive attenuator?

Select	Answer
A	To reduce excessive audio level on strong signals
B	To prevent receiver overload from strong incoming signals
C	To reduce power consumption when operating from batteries
D	To reduce the transmitter power when driving a linear amplifier

17. - G4B12

What effect can strong signals from nearby transmitters have on an antenna analyzer?

Select	Answer
A	Received power that interferes with SWR readings
B	Desensitization which can cause intermodulation products which interfere with impedance readings
C	All these choices are correct
D	Generation of harmonics which interfere with frequency readings

18. - G4C01

Which of the following might be useful in reducing RF interference to audio frequency circuits?

Select	Answer
A	Reverse-biased diode
B	Bypass inductor
C	Bypass capacitor
D	Forward-biased diode

19. - G4D03

What is the effect of an incorrectly adjusted speech processor?

Select	Answer
A	Excess intermodulation products
B	Distorted speech
C	All these choices are correct
D	Excessive background noise

20. - G4E06

What is one disadvantage of using a shortened mobile antenna as opposed to a full-size antenna?

Select	Answer
A	Harmonic radiation may increase
B	Operating bandwidth may be very limited
C	Short antennas are more likely to cause distortion of transmitted signals
D	Q of the antenna will be very low

21. - G5A11

What letter is used to represent reactance?

Select	Answer
A	Y
B	B
C	Z
D	X

22. - G5B09

What is the RMS voltage of a sine wave with a value of 17 volts peak?

Select	Answer
A	12 volts
B	8.5 volts
C	34 volts
D	24 volts

23. - G5C14

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

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

24. - G6A03

What is the approximate forward threshold voltage of a germanium diode?

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

25. - G6B12

Which of these connector types is commonly used for low frequency or dc signal connections to a transceiver?

Select	Answer
A	BNC
B	PL-259
C	RCA Phono
D	Type N

26. - G7A05

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

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

27. - G7B09

What determines the frequency of an LC oscillator?

Select	Answer
A	The number of stages in the divider
B	The inductance and capacitance in the tank circuit
C	The time delay of the lag circuit
D	The number of stages in the counter

28. - G7C02

What output is produced by a balanced modulator?

Select	Answer
A	Double-sideband modulated RF
B	Audio with equalized frequency response
C	Frequency modulated RF
D	Audio extracted from the modulation signal

29. - G8A10

What is meant by the term “flat-topping,” when referring to an amplitude-modulated phone signal?

Select	Answer
A	The transmitter’s carrier is properly suppressed
B	Signal distortion caused by excessive drive or speech levels
C	Signal distortion caused by insufficient collector current
D	The transmitter’s automatic level control (ALC) is properly adjusted

30. - G8B04

What is the stage in a VHF FM transmitter that generates a harmonic of a lower frequency signal to reach the desired operating frequency?

Select	Answer
A	Balanced converter
B	Reactance modulator
C	Mixer
D	Multiplier

31. - G8C07

Which of the following narrow-band digital modes can receive signals with very low signal-to-noise ratios?

Select	Answer
A	MFSK32
B	FT8
C	MSK144
D	AMTOR

32. - G9A01

Which of the following factors determine the characteristic impedance of a parallel conductor feed line?

Select	Answer
A	The distance between the centers of the conductors and the length of the line
B	The distance between the centers of the conductors and the radius of the conductors
C	The frequency of the signal and the length of the line
D	The radius of the conductors and the frequency of the signal

33. - G9B08

How does the feed point impedance of a 1/2 wave dipole change as the feed point is moved from the center toward the ends?

Select	Answer
A	It steadily increases
B	It is unaffected by the location of the feed point
C	It steadily decreases
D	It peaks at about 1/8 wavelength from the end

34. - G9C08

What is meant by the “main lobe” of a directive antenna?

Select	Answer
A	The magnitude of the maximum vertical angle of radiation
B	The point of maximum current in a radiating antenna element
C	The direction of maximum radiated field strength from the antenna
D	The maximum voltage standing wave point on a radiating element

35. - G9D07

Which of the following describes a log-periodic antenna?

Select	Answer
A	SWR varies periodically as a function of boom length
B	Gain varies logarithmically as a function of frequency
C	Element length and spacing vary logarithmically along the boom
D	Impedance varies periodically as a function of frequency