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. - G0A02

Which of the following is used to determine RF exposure from a transmitted signal?

Select	Answer
A	All these choices are correct
B	Its power density
C	Its duty cycle
D	Its frequency

2. - G0B08

What should be done before climbing a tower that supports electrically powered devices?

Select	Answer
A	Unground the base of the tower
B	Make sure all circuits that supply power to the tower are locked out and tagged
C	Notify the electric company that a person will be working on the tower
D	All these choices are correct

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

4. - G1B05

Which of the following one-way transmissions are permitted?

Select	Answer
A	Unidentified test transmissions of less than 10 seconds in duration
B	Transmissions to assist with learning the International Morse code
C	All these choices are correct
D	Regular transmissions offering equipment for sale, if intended for amateur radio use

5. - G1C05

What is the limit for transmitter power on the 28 MHz band for a General Class control operator?

Select	Answer
A	100 watts PEP output
B	2000 watts PEP output
C	1500 watts PEP output
D	1000 watts PEP output

6. - G1D08

Which of the following criteria must be met for a non-US citizen to be an accredited Volunteer Examiner?

Select	Answer
A	None of these choices is correct; a non-US citizen cannot be a Volunteer Examiner
B	The person must be a resident of the US for a minimum of 5 years
C	The person’s home citizenship must be in ITU region 2
D	The person must hold an FCC granted amateur radio license of General class or above

7. - G1E04

Which of the following conditions require a licensed amateur radio operator to take specific steps to avoid harmful interference to other users or facilities?

Select	Answer
A	When a station is transmitting spread spectrum emissions
B	All these choices are correct
C	When using a band where the Amateur Service is secondary
D	When operating within one mile of an FCC Monitoring Station

8. - G2A04

Which mode is most commonly used for voice communications on the 17- and 12-meter bands?

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

9. - G2B04

When selecting a CW transmitting frequency, what minimum separation from other stations should be used to minimize interference to stations on adjacent frequencies?

Select	Answer
A	5 Hz to 50 Hz
B	3 kHz to 6 kHz
C	150 Hz to 500 Hz
D	1 kHz to 3 kHz

10. - G2C05

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

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

11. - G2D04

Which of the following describes an azimuthal projection map?

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

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 an email to the system control operator
D	Send QRL in Morse code

13. - G3A11

How long does it take a coronal mass ejection to affect radio propagation on Earth?

Select	Answer
A	15 hours to several days
B	14 days
C	4 to 8 minutes
D	28 days

14. - G3B06

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

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

15. - G3C01

Which ionospheric region is closest to the surface of Earth?

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

16. - G4A06

What is the purpose of an antenna tuner?

Select	Answer
A	Reduce the power dissipation in the feedline to the antenna
B	Reduce the SWR in the feed line to the antenna
C	Increase power transfer from the transmitter to the feed line
D	All these choices are correct

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	Complex impedances can be easily measured
D	Greater precision

18. - G4C09

How can the effects of ground loops be minimized?

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

19. - G4D07

How much must the power output of a transmitter be raised to change the S meter reading on a distant receiver from S8 to S9?

Select	Answer
A	Approximately 2 times
B	Approximately 4 times
C	Approximately 8 times
D	Approximately 1.5 times

20. - G4E05

Which of the following most limits an HF mobile installation?

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

21. - G5A04

Which of the following is opposition to the flow of alternating current in a capacitor?

Select	Answer
A	Reactance
B	Reluctance
C	Admittance
D	Conductance

22. - G5B06

What is the PEP produced by 200 volts peak-to-peak across a 50-ohm dummy load?

Select	Answer
A	400 watts
B	100 watts
C	353.5 watts
D	1.4 watts

23. - G5C09

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

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

24. - G6A12

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

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

25. - G6B02

What is meant by the term MMIC?

Select	Answer
A	Monolithic Microwave Integrated Circuit
B	Multi-Mode Integrated Circuit
C	Mode Modulated Integrated Circuit
D	Metal Monolayer Integrated Circuit

26. - G7A10

Which symbol in figure G7-1 represents a Zener diode?

Select	Answer
A	Symbol 5
B	Symbol 1
C	Symbol 4
D	Symbol 11

27. - G7B09

What determines the frequency of an LC oscillator?

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

28. - G7C06

Which of the following is an advantage of a digital signal processing (DSP) filter compared to an analog filter?

Select	Answer
A	A wide range of filter bandwidths and shapes can be created
B	The DSP filter is much more effective at VHF frequencies
C	Mixing products are greatly reduced
D	Fewer digital components are required

29. - G8A07

Which of the following phone emissions uses the narrowest bandwidth?

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

30. - G8B13

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

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

31. - G8C11

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

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

32. - G9A07

What must be done to prevent standing waves on a feed line connected to an antenna?

Select	Answer
A	The feed line must be an odd number of electrical quarter wavelengths long
B	The antenna feed point impedance must be matched to the characteristic impedance of the feed line
C	The feed line must be an even number of physical half wavelengths long
D	The antenna feed point must be at DC ground potential

33. - G9B04

What is the radiation pattern of a dipole antenna in free space in a plane containing the conductor?

Select	Answer
A	It is a figure-eight at right angles to the antenna
B	It has a pair of lobes on one side of the antenna and a single lobe on the other side
C	It is a figure-eight off both ends of the antenna
D	It is a circle (equal radiation in all directions)

34. - G9C10

Which of the following can be adjusted to optimize forward gain, front-to-back ratio, or SWR bandwidth of a Yagi antenna?

Select	Answer
A	The spacing of each element along the boom
B	The physical length of the boom
C	All these choices are correct
D	The number of elements on the boom

35. - G9D12

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

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

Figure G7-1