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. - G0A06

What must you do if your station fails to meet the FCC RF exposure exemption criteria?

Select	Answer
A	Use an FCC-approved band-pass filter
B	Contact the FCC for permission to transmit
C	Perform an RF exposure evaluation in accordance with World Meteorological Organization guidelines
D	Perform an RF Exposure Evaluation in accordance with FCC OET Bulletin 65

2. - G0B03

Which size of fuse or circuit breaker would be appropriate to use with a circuit that uses AWG number 14 wiring?

Select	Answer
A	25 amperes
B	15 amperes
C	30 amperes
D	20 amperes

3. - G1A03

On which of the following bands is image transmission prohibited?

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

4. - G1B01

What is the maximum height above ground for an antenna structure not near a public use airport without requiring notification to the FAA and registration with the FCC?

Select	Answer
A	250 feet
B	50 feet
C	200 feet
D	100 feet

5. - G1C08

What is the maximum symbol rate permitted for RTTY or data emission transmitted at frequencies below 28 MHz?

Select	Answer
A	56 kilobaud
B	300 baud
C	1200 baud
D	19.6 kilobaud

6. - G1D10

What is the minimum age that one must be to qualify as an accredited Volunteer Examiner?

Select	Answer
A	18 years
B	21 years
C	16 years
D	There is no age limit

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 not a US citizen
B	The third party is speaking in a language other than English
C	The third party’s amateur license has been revoked and not reinstated
D	All these choices are correct

8. - G2A10

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

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

9. - G2B11

How often may RACES training drills and tests be routinely conducted without special authorization?

Select	Answer
A	No more than 2 hours per month
B	No more than 1 hour per week
C	No more than 2 hours per week
D	No more than 1 hour per month

10. - G2C02

What should you do if a CW station sends “QRS?”

Select	Answer
A	Send slower
B	Change frequency
C	Repeat everything twice
D	Increase your power

11. - G2D06

How is a directional antenna pointed when making a “long-path” contact with another station?

Select	Answer
A	Toward the north
B	Toward the rising sun
C	180 degrees from the station’s short-path heading
D	Along the gray line

12. - G2E06

What is the most common frequency shift for RTTY emissions in the amateur HF bands?

Select	Answer
A	85 Hz
B	170 Hz
C	850 Hz
D	425 Hz

13. - G3A10

What causes HF propagation conditions to vary periodically in a 26- to 28-day cycle?

Select	Answer
A	Cyclic variation in Earth’s radiation belts
B	Rotation of the Sun’s surface layers around its axis
C	The position of the Moon in its orbit
D	Long term oscillations in the upper atmosphere

14. - G3B01

What is a characteristic of skywave signals arriving at your location by both short-path and long-path propagation?

Select	Answer
A	Signal strength increased by 3 dB
B	The signal might be cancelled causing severe attenuation
C	A slightly delayed echo might be heard
D	Periodic fading approximately every 10 seconds

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 D region absorbs signals at these frequencies 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 F region is unstable during daylight hours

16. - G4A07

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

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

17. - G4B02

Which of the following is an advantage of an oscilloscope versus a digital voltmeter?

Select	Answer
A	Greater precision
B	Complex waveforms can be measured
C	An oscilloscope uses less power
D	Complex impedances can be easily measured

18. - G4C10

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

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

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

20. - G4E01

What is the purpose of a capacitance hat on a mobile antenna?

Select	Answer
A	To lower the radiation angle
B	To reduce radiation resistance
C	To electrically lengthen a physically short antenna
D	To increase the power handling capacity of a whip antenna

21. - G5A12

What occurs in an LC circuit at resonance?

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

22. - G5B14

What is the output PEP of 500 volts peak-to-peak across a 50-ohm load?

Select	Answer
A	625 watts
B	2500 watts
C	8.75 watts
D	5000 watts

23. - G5C09

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

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

24. - G6A08

Which of the following is characteristic of low voltage ceramic capacitors?

Select	Answer
A	High capacitance for given volume
B	Tight tolerance
C	High stability
D	Comparatively low cost

25. - G6B01

What determines the performance of a ferrite core at different frequencies?

Select	Answer
A	The composition, or “mix,” of materials used
B	Its conductivity
C	The ratio of outer diameter to inner diameter
D	Its thickness

26. - G7A06

What portion of the AC cycle is converted to DC by a full-wave rectifier?

Select	Answer
A	270 degrees
B	360 degrees
C	180 degrees
D	90 degrees

27. - G7B04

In a Class A amplifier, what percentage of the time does the amplifying device conduct?

Select	Answer
A	Less than 50%
B	100%
C	More than 50% but less than 100%
D	50%

28. - G7C03

What is one reason to use an impedance matching transformer at a transmitter output?

Select	Answer
A	To reduce power supply ripple
B	To minimize transmitter power output
C	To minimize radiation resistance
D	To present the desired impedance to the transmitter and feed line

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 transformation
C	Frequency convolution
D	Frequency conversion

30. - G8B11

What combination of a mixer’s Local Oscillator (LO) and RF input frequencies is found in the output?

Select	Answer
A	The sum and difference
B	The average
C	The ratio
D	The arithmetic product

31. - G8C03

What part of a packet radio frame contains the routing and handling information?

Select	Answer
A	Directory
B	Trailer
C	Header
D	Preamble

32. - G9A06

In what units is RF feed line loss usually expressed?

Select	Answer
A	Ohms per 1,000 feet
B	Decibels per 1,000 feet
C	Ohms per 100 feet
D	Decibels per 100 feet

33. - G9B09

Which of the following is an advantage of using a horizontally polarized as compared to a vertically polarized HF antenna?

Select	Answer
A	Lower radiation resistance
B	Shorter radials
C	Lower ground losses
D	Lower feed point impedance

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

35. - G9D09

What is the primary use of a Beverage antenna?

Select	Answer
A	Directional transmitting for low HF bands
B	Portable direction finding at higher HF frequencies
C	Directional receiving for MF and low HF bands
D	Portable direction finding at lower HF frequencies