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. - G0A03

How can you determine that your station complies with FCC RF exposure regulations?

Select	Answer
A	By calculation based on computer modeling
B	By calculation based on FCC OET Bulletin 65
C	All these choices are correct
D	By measurement of field strength using calibrated equipment

2. - G0B13

Where should lightning arrestors be located?

Select	Answer
A	In series with each ground lead
B	Where the feed lines enter the building
C	On the antenna, opposite the feed point
D	At the closest power pole ground electrode

3. - G1A02

On which of the following bands is phone operation prohibited?

Select	Answer
A	17 meters
B	160 meters
C	12 meters
D	30 meters

4. - G1B08

When is it permissible to communicate with amateur stations in countries outside the areas administered by the Federal Communications Commission?

Select	Answer
A	Only when the contact is with amateurs licensed by a country which is a member of the International Amateur Radio Union, or by a territory possessed by such a country
B	When the contact is with amateurs in any country except those whose administrations have notified the ITU that they object to such communications
C	Only when the foreign country has a formal third-party agreement filed with the FCC
D	Only when the contact is with amateurs licensed by a country which is a member of the United Nations, or by a territory possessed by such a country

5. - G1C01

What is the maximum transmitter power an amateur station may use on 10.140 MHz?

Select	Answer
A	1000 watts PEP output
B	200 watts PEP output
C	2000 watts PEP output
D	1500 watts PEP output

6. - G1D06

Until an upgrade to General class is shown in the FCC database, when must a Technician licensee identify with “AG” after their call sign?

Select	Answer
A	Whenever they operate using Technician frequency privileges
B	Whenever they operate on any amateur frequency
C	A special identifier is not required if their General class license application has been filed with the FCC
D	Whenever they operate using General class frequency privileges

7. - G1E06

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

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

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. - G2B07

Which of the following complies with commonly accepted amateur practice when choosing a frequency on which to initiate a call?

Select	Answer
A	Follow the voluntary band plan
B	All these choices are correct
C	Identify your station by transmitting your call sign at least 3 times
D	Listen on the frequency for at least two minutes to be sure it is clear

10. - G2C06

What does the term “zero beat” mean in CW operation?

Select	Answer
A	Matching the transmit frequency to the frequency of a received signal
B	Sending without error
C	Operating split to avoid interference on frequency
D	Matching the speed of the transmitting station

11. - G2D08

Why do many amateurs keep a station log?

Select	Answer
A	To help with a reply if the FCC requests information about your station
B	The FCC requires a log of all international third-party traffic
C	The FCC requires a log of all international contacts
D	The log provides evidence of operation needed to renew a license without retest

12. - G2E03

What symptoms may result from other signals interfering with a PACTOR or VARA transmission?

Select	Answer
A	Long pauses in message transmission
B	Frequent retries or timeouts
C	All these choices are correct
D	Failure to establish a connection between stations

13. - G3A05

What is the solar flux index?

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

14. - G3B09

What is the approximate maximum distance along the Earth’s surface normally covered in one hop using the F2 region?

Select	Answer
A	2,500 miles
B	12,000 miles
C	180 miles
D	1,200 miles

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

16. - G4A07

What happens as a receiver’s noise reduction control level is increased?

Select	Answer
A	CW signals may become severely attenuated
B	Received frequency may shift several kHz
C	Received frequency may become unstable
D	Received signals may become distorted

17. - G4B05

Why do voltmeters have high input impedance?

Select	Answer
A	It improves the frequency response
B	It decreases the loading on circuits being measured
C	It allows for higher voltages to be safely measured
D	It improves the resolution of the readings

18. - G4C06

What is a possible effect of a resonant ground connection?

Select	Answer
A	A ground loop
B	High RF voltages on the enclosures of station equipment
C	Overheating of ground straps
D	Corrosion of the ground rod

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	14.347 MHz to 14.647 MHz
B	14.344 MHz to 14.347 MHz
C	14.3455 MHz to 14.3485 MHz
D	14.347 MHz to 14.350 MHz

20. - G4E08

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

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

21. - G5A12

What occurs in an LC circuit at resonance?

Select	Answer
A	Resistance is cancelled
B	Inductive reactance and capacitive reactance cancel
C	The circuit radiates all its energy in the form of radio waves
D	Current and voltage are equal

22. - G5B07

What value of an AC signal produces the same power dissipation in a resistor as a DC voltage of the same value?

Select	Answer
A	The RMS value
B	The peak-to-peak value
C	The peak value
D	The reciprocal of the RMS value

23. - G5C09

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

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

24. - G6A12

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

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

25. - G6B05

What is an advantage of using a ferrite core toroidal inductor?

Select	Answer
A	All these choices are correct
B	The magnetic properties of the core may be optimized for a specific range of frequencies
C	Most of the magnetic field is contained in the core
D	Large values of inductance may be obtained

26. - G7A03

Which type of rectifier circuit uses two diodes and a center-tapped transformer?

Select	Answer
A	Full-wave bridge
B	Synchronous
C	Half-wave
D	Full-wave

27. - G7B02

Which of these classes of amplifiers has the highest efficiency?

Select	Answer
A	Class A
B	Class C
C	Class AB
D	Class B

28. - G7C12

What is the frequency above which a low-pass filter’s output power is less than half the input power?

Select	Answer
A	Cutoff frequency
B	Notch frequency
C	Rolloff frequency
D	Neper frequency

29. - G8A12

What is QPSK modulation?

Select	Answer
A	Modulation using quasi-parallel to serial conversion to reduce bandwidth
B	Modulation using quadra-pole sideband keying to generate spread spectrum signals
C	Modulation using Fast Fourier Transforms to generate frequencies at the first, second, third, and fourth harmonics of the carrier frequency to improve noise immunity
D	Modulation in which digital data is transmitted using 0-, 90-, 180- and 270-degrees phase shift to represent pairs of bits

30. - G8B01

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

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

31. - G8C16

Which of the following provide digital voice modes?

Select	Answer
A	Winlink, PACTOR II, and PACTOR III
B	DMR, D-STAR, and SystemFusion
C	FT8, FT4, and FST4
D	WSPR, MFSK16, and EasyPAL

32. - G9A05

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

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

33. - G9B12

What is the approximate length for a 1/4 wave monopole antenna cut for 28.5 MHz?

Select	Answer
A	21 feet
B	8 feet
C	11 feet
D	16 feet

34. - G9C03

How do the lengths of a three-element Yagi reflector and director compare to that of the driven element?

Select	Answer
A	They are all the same length
B	The reflector is longer, and the director is shorter
C	The reflector is shorter, and the director is longer
D	Relative length depends on the frequency of operation

35. - G9D04

What is the primary function of antenna traps?

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