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

2. - G0B10

Which of the following is a danger from lead-tin solder?

Select	Answer
A	High voltages can cause lead-tin solder to disintegrate suddenly
B	RF energy can convert the lead into a poisonous gas
C	Lead can contaminate food if hands are not washed carefully after handling the solder
D	Tin in the solder can “cold flow,” causing shorts in the circuit

3. - G1A03

On which of the following bands is image transmission prohibited?

Select	Answer
A	12 meters
B	30 meters
C	160 meters
D	20 meters

4. - G1B06

Under what conditions are state and local governments permitted to regulate amateur radio antenna structures?

Select	Answer
A	Amateur Service communications must be reasonably accommodated, and regulations must constitute the minimum practical to accommodate a legitimate purpose of the state or local entity
B	At any time and to any extent necessary to accomplish a legitimate purpose of the state or local entity, provided that proper filings are made with the FCC
C	Only when such structures exceed 50 feet in height and are clearly visible 1,000 feet from the structure
D	Under no circumstances, FCC rules take priority

5. - G1C05

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

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

6. - G1D09

How long is a Certificate of Successful Completion of Examination (CSCE) valid for exam element credit?

Select	Answer
A	For as long as your current license is valid
B	365 days
C	180 days
D	30 days

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 emergencies or disaster relief
C	They must be for other licensed amateurs
D	They must relate to amateur radio, or remarks of a personal character, or messages relating to emergencies or disaster relief

8. - G2A01

Which mode is most commonly used for voice communications on frequencies of 14 MHz or higher?

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

9. - G2B03

What is good amateur practice if propagation changes during a contact creating interference from other stations using the frequency?

Select	Answer
A	Switch to the opposite sideband
B	Decrease power and continue to transmit
C	Advise the interfering stations that you are on the frequency and that you have priority
D	Attempt to resolve the interference problem with the other stations in a mutually acceptable manner

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	An operator must activate a manual send/receive switch before and after every transmission
D	Transmitting stations can receive between code characters and elements

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 true bearings and distances from a specific location
C	A map that shows accurate land masses
D	A map that shows the angle at which an amateur satellite crosses the equator

12. - G2E02

What is VARA?

Select	Answer
A	A radio direction finding system used on VHF and UHF
B	A digital protocol used with Winlink
C	A low signal-to-noise digital mode used for EME (moonbounce)
D	A DX spotting system using a network of software defined radios

13. - G3A01

How does a higher sunspot number affect HF propagation?

Select	Answer
A	A zero sunspot number indicates undisturbed conditions
B	A zero sunspot number indicates that radio propagation is not possible on any band
C	Lower sunspot numbers generally indicate greater probability of sporadic E propagation
D	Higher sunspot numbers generally indicate a greater probability of good propagation at higher frequencies

14. - G3B05

How does the ionosphere affect radio waves with frequencies below the MUF and above the LUF?

Select	Answer
A	They are refracted and trapped in the ionosphere to circle Earth
B	They pass through the ionosphere
C	They are amplified by interaction with the ionosphere
D	They are refracted back to Earth

15. - G3C07

What makes HF scatter signals often sound distorted?

Select	Answer
A	The E region is not present
B	Ground waves are absorbing much of the signal
C	The ionospheric region involved is unstable
D	Energy is scattered into the skip zone through several different paths

16. - G4A13

What is the purpose of using a receive attenuator?

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

17. - G4B11

Which of the following must be connected to an antenna analyzer when it is being used for SWR measurements?

Select	Answer
A	All these choices are correct
B	Receiver
C	Antenna and feed line
D	Transmitter

18. - G4C12

Why must all metal enclosures of station equipment be grounded?

Select	Answer
A	It prevents signal overload
B	It prevents a blown fuse in the event of an internal short circuit
C	It ensures that the neutral wire is grounded
D	It ensures that hazardous voltages cannot appear on the chassis

19. - G4D09

What frequency range is occupied by a 3 kHz USB signal with the displayed carrier frequency set to 14.347 MHz?

Select	Answer
A	14.344 MHz to 14.347 MHz
B	14.347 MHz to 14.350 MHz
C	14.347 MHz to 14.647 MHz
D	14.3455 MHz to 14.3485 MHz

20. - G4E09

What is the approximate open-circuit voltage from a fully illuminated silicon photovoltaic cell?

Select	Answer
A	0.2 VDC
B	0.02 VDC
C	1.38 VDC
D	0.5 VDC

21. - G5A10

Which of the following devices can be used for impedance matching at radio frequencies?

Select	Answer
A	A length of transmission line
B	A Pi-network
C	A transformer
D	All these choices are correct

22. - G5B10

What percentage of power loss is equivalent to a loss of 1 dB?

Select	Answer
A	25.9 percent
B	12.2 percent
C	20.6 percent
D	10.9 percent

23. - G5C13

Which of the following components should be added to a capacitor to increase the capacitance?

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

24. - G6A02

What is an advantage of batteries with low internal resistance?

Select	Answer
A	Long life
B	High discharge current
C	High voltage
D	Rapid recharge

25. - G6B06

What kind of device is an integrated circuit operational amplifier?

Select	Answer
A	MMIC
B	Programmable Logic
C	Digital
D	Analog

26. - G7A09

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

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

27. - G7B03

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

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

28. - G7C02

What output is produced by a balanced modulator?

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

29. - G8A04

What emission is produced by a reactance modulator connected to a transmitter RF amplifier stage?

Select	Answer
A	Multiplex modulation
B	Amplitude modulation
C	Pulse modulation
D	Phase modulation

30. - G8B01

Which mixer input is varied or tuned to convert signals of different frequencies to an intermediate frequency (IF)?

Select	Answer
A	Beat frequency oscillator
B	RF input
C	Image frequency
D	Local oscillator

31. - G8C13

What is indicated on a waterfall display by one or more vertical lines on either side of a data mode or RTTY signal?

Select	Answer
A	Backscatter propagation
B	Overmodulation
C	Long path propagation
D	Insufficient modulation

32. - G9A09

What standing wave ratio results from connecting a 50-ohm feed line to a 200-ohm resistive load?

Select	Answer
A	1:2
B	2:1
C	4:1
D	1:4

33. - G9B11

What is the approximate length for a 1/2 wave dipole antenna cut for 3.550 MHz?

Select	Answer
A	263 feet
B	42 feet
C	132 feet
D	84 feet

34. - G9C08

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

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

35. - G9D12

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

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

Figure G7-1