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

2. - G0B09

Which of the following is true of an emergency generator installation?

Select	Answer
A	Fuel should be stored near the generator for rapid refueling in case of an emergency
B	The generator should be operated in a well-ventilated area
C	All these choices are correct
D	The generator must be insulated from ground

3. - G1A09

Which of the following frequencies is within the General class portion of the 15-meter band?

Select	Answer
A	18155 kHz
B	21300 kHz
C	14250 kHz
D	24900 kHz

4. - G1B03

Which of the following is a purpose of a beacon station as identified in the FCC rules?

Select	Answer
A	Observation of propagation and reception
B	Transmission of bulletins of general interest to amateur radio licensees
C	Automatic identification of repeaters
D	All these choices are correct

5. - G1C04

Which of the following is required by the FCC rules when operating in the 60-meter band?

Select	Answer
A	You must keep a record of the manufacturer of your equipment and the antenna used
B	You must keep a record of the date, time, frequency, power level, and stations worked
C	You must keep a record of all third-party traffic
D	If you are using an antenna other than a dipole, you must keep a record of the gain of your 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	There are no requirements other than being able to show a copy of the expired license
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	The applicant must show proof of the appropriate expired license grant and pass the current Element 2 exam

7. - G1E06

The frequency allocations of which ITU region apply to radio amateurs operating in North and South America?

Select	Answer
A	Region 3
B	Region 4
C	Region 2
D	Region 1

8. - G2A11

Generally, who should respond to a station in the contiguous 48 states calling “CQ DX”?

Select	Answer
A	Only contest stations
B	Any stations outside the lower 48 states
C	Only stations in Germany
D	Any caller is welcome to respond

9. - G2B06

How can you avoid harmful interference on an apparently clear frequency before calling CQ on CW or phone?

Select	Answer
A	Send “QSY” on CW or if using phone, announce “the frequency is in use,” then give your call sign and listen for a response
B	Send “QRL?” on CW, followed by your call sign; or, if using phone, ask if the frequency is in use, followed by your call sign
C	Listen for 2 minutes before calling CQ
D	Send the letter “V” in Morse code several times and listen for a response, or say “test” several times and listen for a response

10. - G2C01

Which of the following describes full break-in CW operation (QSK)?

Select	Answer
A	Breaking stations send the Morse code prosign “BK”
B	Automatic keyers, instead of hand keys, are used to send Morse code
C	Transmitting stations can receive between code characters and elements
D	An operator must activate a manual send/receive switch before and after every transmission

11. - G2D04

Which of the following describes an azimuthal projection map?

Select	Answer
A	A map that shows the angle at which an amateur satellite crosses the equator
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 accurate land masses

12. - G2E12

Which of the following describes Winlink?

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

13. - G3A12

What does the K-index measure?

Select	Answer
A	The relative position of sunspots on the surface of the Sun
B	The short-term stability of the Sun’s magnetic field
C	The short-term stability of Earth’s geomagnetic field
D	The solar radio flux at Boulder, Colorado

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

15. - G3C03

Why is skip propagation via the F2 region longer than that via the other ionospheric regions?

Select	Answer
A	Because it is the highest
B	Because of temperature inversions
C	Because of the Doppler effect
D	Because it is the densest

16. - G4A04

What is the effect on plate current of the correct setting of a vacuum-tube RF power amplifier’s TUNE control?

Select	Answer
A	A slow, rhythmic oscillation
B	A pronounced dip
C	No change will be observed
D	A pronounced peak

17. - G4B10

Which of the following can be determined with a directional wattmeter?

Select	Answer
A	Radio wave propagation
B	Standing wave ratio
C	Antenna front-to-back ratio
D	RF interference

18. - G4C10

What could be a symptom caused by a ground loop in your station’s audio connections?

Select	Answer
A	The SWR reading for one or more antennas is suddenly very high
B	You receive reports of harmonic interference from your station
C	You receive reports of “hum” on your station’s transmitted signal
D	An item of station equipment starts to draw excessive amounts of current

19. - G4D08

What frequency range is occupied by a 3 kHz LSB signal when the displayed carrier frequency is set to 7.178 MHz?

Select	Answer
A	7.178 MHz to 7.184 MHz
B	7.1765 MHz to 7.1795 MHz
C	7.178 MHz to 7.181 MHz
D	7.175 MHz to 7.178 MHz

20. - G4E06

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

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

21. - G5A03

Which of the following is opposition to the flow of alternating current in an inductor?

Select	Answer
A	Reactance
B	Admittance
C	Reluctance
D	Conductance

22. - G5B03

How many watts of electrical power are consumed if 400 VDC is supplied to an 800-ohm load?

Select	Answer
A	3200 watts
B	400 watts
C	200 watts
D	0.5 watts

23. - G5C08

What is the equivalent capacitance of two 5.0-nanofarad capacitors and one 750-picofarad capacitor connected in parallel?

Select	Answer
A	10.750 nanofarads
B	576.9 nanofarads
C	1,733 picofarads
D	3,583 picofarads

24. - G6A07

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

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

25. - G6B10

How does a ferrite bead or core reduce common-mode RF current on the shield of a coaxial cable?

Select	Answer
A	By creating an impedance in the current’s path
B	By creating an out-of-phase current to cancel the common-mode current
C	Ferrites expel magnetic fields
D	It converts common-mode current to differential mode current

26. - G7A09

Which symbol in figure G7-1 represents a field effect transistor?

Select	Answer
A	Symbol 1
B	Symbol 4
C	Symbol 5
D	Symbol 2

27. - G7B11

For which of the following modes is a Class C power stage appropriate for amplifying a modulated signal?

Select	Answer
A	SSB
B	All these choices are correct
C	FM
D	AM

28. - G7C14

The bandwidth of a band-pass filter is measured between what two frequencies?

Select	Answer
A	Image and harmonic
B	Upper and lower half-power
C	Pole and zero
D	Cutoff and rolloff

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	Phase inversion
B	Heterodyning
C	Frequency inversion
D	Synthesizing

31. - G8C12

Which type of code is used for sending characters in a PSK31 signal?

Select	Answer
A	Viterbi
B	Binary
C	Varicode
D	Volumetric

32. - G9A05

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

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

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 too high, the pattern becomes unpredictable
D	If the antenna is less than 1/2 wavelength high, the azimuthal pattern is almost omnidirectional

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	All these choices are correct
C	It does not require any inductors or capacitors
D	It is useful for matching multiband antennas

35. - G9D04

What is the primary function of antenna traps?

Select	Answer
A	To notch spurious frequencies
B	To enable multiband operation
C	To prevent out-of-band operation
D	To provide balanced feed point impedance

Figure G7-1