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. - G0A10

What should be done if evaluation shows that a neighbor might experience more than the allowable limit of RF exposure from the main lobe of a directional antenna?

Select	Answer
A	All these choices are correct
B	Change to a non-polarized antenna with higher gain
C	Take precautions to ensure that the antenna cannot be pointed in their direction when they are present
D	Use an antenna with a higher front-to-back ratio

2. - G0B05

Which of the following conditions will cause a ground fault circuit interrupter (GFCI) to disconnect AC power?

Select	Answer
A	Overvoltage on the hot wires
B	Current flowing from one or more of the hot wires directly to ground
C	All these choices are correct
D	Current flowing from one or more of the hot wires to the neutral wire

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?

Select	Answer
A	The lower frequency portion
B	The upper frequency portion on frequencies below 7.3 MHz, and the lower portion on frequencies above 14.150 MHz
C	The upper frequency portion
D	The lower frequency portion on frequencies below 7.3 MHz, and the upper portion on frequencies above 14.150 MHz

4. - G1B02

With which of the following conditions must beacon stations comply?

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

5. - G1C06

What is the limit for transmitter power on the 1.8 MHz band?

Select	Answer
A	200 watts PEP output
B	1200 watts PEP output
C	1000 watts PEP output
D	1500 watts PEP output

6. - G1D11

What action is required to obtain a new General class license after a previously held license has expired and the two-year grace period has passed?

Select	Answer
A	The applicant must show proof of the appropriate expired license grant and pass the current Element 2 exam
B	They must have a letter from the FCC showing they once held an amateur or commercial license
C	Contact the FCC to have the license reinstated
D	There are no requirements other than being able to show a copy of the expired license

7. - G1E01

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

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A	The third party’s amateur license has been revoked and not reinstated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

8. - G2A05

Which mode of voice communication is most commonly used on the HF amateur bands?

Select	Answer
A	Single sideband
B	Frequency modulation
C	Single phase modulation
D	Double sideband

9. - G2B02

What is the first thing you should do if you are communicating with another amateur station and hear a station in distress break in?

Select	Answer
A	Immediately cease all transmissions
B	Acknowledge the station in distress and determine what assistance may be needed
C	Inform your local emergency coordinator
D	Immediately decrease power to avoid interfering with the station in distress

10. - G2C10

What does the Q signal “QRN” mean?

Select	Answer
A	Stop sending
B	Zero beat my signal
C	Send more slowly
D	I am troubled by static

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	Adam, Boy, Charles, David
D	America, Boston, Canada, Denmark

12. - G2E10

Which of the following is a way to establish contact with a digital messaging system gateway station?

Select	Answer
A	Respond when the station broadcasts its SSID
B	Transmit a connect message on the station’s published frequency
C	Send QRL in Morse code
D	Send an email to the system control operator

13. - G3A14

How is long distance radio communication usually affected by the charged particles that reach Earth from solar coronal holes?

Select	Answer
A	HF communication is improved
B	HF communication is disturbed
C	VHF/UHF ducting is disturbed
D	VHF/UHF ducting is improved

14. - G3B12

Which of the following is typical of the lower HF frequencies during the summer?

Select	Answer
A	Heavy distortion on signals due to photon absorption
B	World-wide propagation during daylight hours
C	Poor propagation at any time of day
D	High levels of atmospheric noise or static

15. - G3C02

What is meant by the term “critical frequency” at a given incidence angle?

Select	Answer
A	The frequency at which the signal-to-noise ratio approaches unity
B	The highest frequency which is refracted back to Earth
C	The lowest frequency which is refracted back to Earth
D	The frequency at which the signal-to-noise ratio is 6 dB

16. - G4A01

What is the purpose of the notch filter found on many HF transceivers?

Select	Answer
A	To eliminate receiver interference from impulse noise sources
B	To reduce interference from carriers in the receiver passband
C	To remove interfering splatter generated by signals on adjacent frequencies
D	To restrict the transmitter voice bandwidth

17. - G4B02

Which of the following is an advantage of an oscilloscope versus a digital voltmeter?

Select	Answer
A	An oscilloscope uses less power
B	Complex waveforms can be measured
C	Greater precision
D	Complex impedances can be easily measured

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. - 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. - G4E08

In what configuration are the individual cells in a solar panel connected together?

Select	Answer
A	Full-wave bridge
B	Bypass
C	Shunt
D	Series-parallel

21. - G5A01

What happens when inductive and capacitive reactance are equal in a series LC circuit?

Select	Answer
A	Resonance causes impedance to be very low
B	Impedance is equal to the geometric mean of the inductance and capacitance
C	Impedance is equal to the arithmetic mean of the inductance and capacitance
D	Resonance causes impedance to be very high

22. - G5B09

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

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

23. - G5C11

What is the inductance of a circuit with a 20-millihenry inductor connected in series with a 50-millihenry inductor?

Select	Answer
A	14.3 millihenries
B	70 millihenries
C	1,000 millihenries
D	7 millihenries

24. - G6A07

What are the operating points for a bipolar transistor used as a switch?

Select	Answer
A	Enhancement and depletion modes
B	The active region (between cutoff and saturation)
C	Saturation and cutoff
D	Peak and valley current points

25. - G6B04

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

Select	Answer
A	50 MHz
B	500 MHz
C	4 GHz
D	40 GHz

26. - G7A06

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

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

27. - G7B03

Which of the following describes the function of a two-input AND gate?

Select	Answer
A	Output is high when either or both inputs are low
B	Output is low when either or both inputs are high
C	Output is high only when both inputs are high
D	Output is low only when both inputs are high

28. - G7C07

What term specifies a filter’s attenuation inside its passband?

Select	Answer
A	Ultimate rejection
B	Q
C	Return loss
D	Insertion loss

29. - G8A07

Which of the following phone emissions uses the narrowest bandwidth?

Select	Answer
A	Single sideband
B	Phase modulation
C	Frequency modulation
D	Vestigial sideband

30. - G8B09

Why is it good to match receiver bandwidth to the bandwidth of the operating mode?

Select	Answer
A	It results in the best signal-to-noise ratio
B	It is required by FCC rules
C	It improves impedance matching of the antenna
D	It minimizes power consumption in the receiver

31. - G8C11

How are the two separate frequencies of a Frequency Shift Keyed (FSK) signal identified?

Select	Answer
A	Dot and dash
B	High and low
C	Mark and space
D	On and off

32. - G9A04

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

Select	Answer
A	A difference between feed line impedance and antenna feed point impedance
B	Feeding the antenna with unbalanced feed line
C	Operating an antenna at its resonant frequency
D	Using more transmitter power than the antenna can handle

33. - G9B09

Which of the following is an advantage of using a horizontally polarized as compared to a vertically polarized HF antenna?

Select	Answer
A	Lower ground losses
B	Lower radiation resistance
C	Shorter radials
D	Lower feed point impedance

34. - G9C02

What is the approximate length of the driven element of a Yagi antenna?

Select	Answer
A	1 wavelength
B	3/4 wavelength
C	1/2 wavelength
D	1/4 wavelength

35. - G9D10

In which direction or directions does an electrically small loop (less than 1/10 wavelength in circumference) have nulls in its radiation pattern?

Select	Answer
A	Broadside to the loop
B	Broadside and in the plane of the loop
C	Electrically small loops are omnidirectional
D	In the plane of the loop