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. - G0A08

Which of the following steps must an amateur operator take to ensure compliance with RF safety regulations?

Select	Answer
A	Notify neighbors within a 100-foot radius of the antenna of the existence of the station and power levels
B	All these choices are correct
C	Perform a routine RF exposure evaluation and prevent access to any identified high exposure areas
D	Post a copy of FCC Part 97.13 in the station

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 to the neutral wire
C	All these choices are correct
D	Current flowing from one or more of the hot wires directly to ground

3. - G1A05

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

Select	Answer
A	28.000 MHz to 28.025 MHz
B	7.125 MHz to 7.175 MHz
C	21.275 MHz to 21.300 MHz
D	All these choices are correct

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	No more than one beacon station may transmit in the same band from the same station location
D	The frequency must be posted on the internet or published in a national periodical

5. - G1C11

What measurement is specified by FCC rules that regulate maximum power?

Select	Answer
A	RMS output from the transmitter
B	PEP input to the antenna
C	PEP output from the transmitter
D	RMS input to the antenna

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	Contact the FCC to have the license reinstated
C	There are no requirements other than being able to show a copy of the expired license
D	They must have a letter from the FCC showing they once held an amateur or commercial 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 is speaking in a language other than English
B	The third party’s amateur license has been revoked and not reinstated
C	All these choices are correct
D	The third party is not a US citizen

8. - G2A10

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

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

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

10. - G2C11

What does the Q signal “QRV” mean?

Select	Answer
A	There is interference on the frequency
B	I am quitting for the day
C	You are sending too fast
D	I am ready to receive

11. - G2D05

Which of the following indicates that you are looking for an HF contact with any station?

Select	Answer
A	Repeat “CQ” a few times, followed by “this is,” then your call sign a few times, then pause to listen, repeat as necessary
B	Transmit an unmodulated carried for approximately 10 seconds, followed by “this is” and your call sign, and pause to listen -- repeat as necessary
C	Sign your call sign once, followed by the words “listening for a call” -- if no answer, change frequency and repeat
D	Say “QTC” followed by “this is” and your call sign -- if no answer, change frequency and repeat

12. - G2E11

What is the primary purpose of an Amateur Radio Emergency Data Network (AREDN) mesh network?

Select	Answer
A	To provide DX spotting reports to aid contesters and DXers
B	To provide high-speed data services during an emergency or community event
C	To provide FM repeater coverage in remote areas
D	To provide real time propagation data by monitoring amateur radio transmissions worldwide

13. - G3A05

What is the solar flux index?

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

14. - G3B06

What usually happens to radio waves with frequencies below the LUF?

Select	Answer
A	They are refracted back to Earth
B	They pass through the ionosphere
C	They are attenuated before reaching the destination
D	They are refracted and trapped in the ionosphere to circle Earth

15. - G3C05

Why is long-distance communication on the 40-, 60-, 80-, and 160-meter bands more difficult during the day?

Select	Answer
A	The F region absorbs signals at these frequencies during daylight hours
B	The F region is unstable during daylight hours
C	The D region absorbs signals at these frequencies during daylight hours
D	The E region is unstable during daylight hours

16. - G4A11

Why should the ALC system be inactive when transmitting AFSK data signals?

Select	Answer
A	When using digital modes, too much ALC activity can cause the transmitter to overheat
B	All these choices are correct
C	ALC will invert the modulation of the AFSK mode
D	The ALC action distorts the signal

17. - G4B13

Which of the following can be measured with an antenna analyzer?

Select	Answer
A	Gain of a directional antenna
B	Impedance of coaxial cable
C	Power output from a transmitter
D	Front-to-back ratio of an antenna

18. - G4C09

How can the effects of ground loops be minimized?

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

19. - G4D03

What is the effect of an incorrectly adjusted speech processor?

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

20. - G4E05

Which of the following most limits an HF mobile installation?

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

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

22. - G5B13

What is the output PEP of an unmodulated carrier if the average power is 1060 watts?

Select	Answer
A	530 watts
B	2120 watts
C	1500 watts
D	1060 watts

23. - G5C04

What is the approximate total resistance of a 100- and a 200-ohm resistor in parallel?

Select	Answer
A	67 ohms
B	300 ohms
C	75 ohms
D	150 ohms

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	0.1 volt
D	1.0 volts

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	40 GHz
D	4 GHz

26. - G7A08

Which of the following is characteristic of a switchmode power supply as compared to a linear power supply?

Select	Answer
A	Faster switching time makes higher output voltage possible
B	Inherently more stable
C	High-frequency operation allows the use of smaller components
D	Fewer circuit components are required

27. - G7B05

How many states does a 3-bit binary counter have?

Select	Answer
A	8
B	3
C	6
D	16

28. - G7C05

Which of the following is characteristic of a direct digital synthesizer (DDS)?

Select	Answer
A	Relatively high-power output
B	Pure sine wave output
C	Extremely narrow tuning range
D	Variable output frequency with the stability of a crystal oscillator

29. - G8A03

What is the name of the process that changes the instantaneous frequency of an RF wave to convey information?

Select	Answer
A	Frequency modulation
B	Frequency convolution
C	Frequency conversion
D	Frequency transformation

30. - G8B03

What is another term for the mixing of two RF signals?

Select	Answer
A	Frequency inversion
B	Heterodyning
C	Phase inversion
D	Synthesizing

31. - G8C11

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

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

32. - G9A08

If the SWR on an antenna feed line is 5:1, and a matching network at the transmitter end of the feed line is adjusted to present a 1:1 SWR to the transmitter, what is the resulting SWR on the feed line?

Select	Answer
A	1:1
B	5:1
C	Between 1:1 and 5:1 depending on the reflected power at the transmitter
D	Between 1:1 and 5:1 depending on the characteristic impedance of the line

33. - G9B05

How does antenna height affect the azimuthal radiation pattern of a horizontal dipole HF antenna at elevation angles higher than about 45 degrees?

Select	Answer
A	Antenna height has no effect on the pattern
B	If the antenna is less than 1/2 wavelength high, radiation off the ends of the wire is eliminated
C	If the antenna is less than 1/2 wavelength high, the azimuthal pattern is almost omnidirectional
D	If the antenna is too high, the pattern becomes unpredictable

34. - G9C05

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

Select	Answer
A	Front-to-back ratio decreases
B	Beamwidth increases
C	Resonant frequency is lower
D	Gain increases

35. - G9D08

How does a “screwdriver” mobile antenna adjust its feed point impedance?

Select	Answer
A	By varying its body capacitance
B	By deploying a capacitance hat
C	By varying the base loading inductance
D	By extending and retracting the whip