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. - G0A04

What does “time averaging” mean when evaluating RF radiation exposure?

Select	Answer
A	The total RF exposure averaged over a certain period
B	The total time of the exposure
C	The average time it takes RF radiation to have any long-term effect on the body
D	The average amount of power developed by the transmitter over a specific 24-hour period

2. - G0B01

Which wire or wires in a four-conductor 240 VAC circuit should be attached to fuses or circuit breakers?

Select	Answer
A	Only the hot wires
B	Only the ground wire
C	All wires
D	Only the neutral wire

3. - G1A03

On which of the following bands is image transmission prohibited?

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

4. - G1B04

Which of the following transmissions is permitted for all amateur stations?

Select	Answer
A	Occasional retransmission of weather and propagation forecast information from US government stations
B	Unidentified transmissions of less than 10 seconds duration for test purposes only
C	Encrypted messages, if not intended to facilitate a criminal act
D	Automatic retransmission of other amateur signals by any amateur station

5. - G1C02

What is the maximum transmitter power an amateur station may use on the 12-meter band?

Select	Answer
A	200 watts PEP output
B	An effective radiated power equivalent to 100 watts from a half-wave dipole
C	50 watts PEP output
D	1500 watts PEP output

6. - G1D03

On which of the following band segments may you operate if you are a Technician class operator and have an unexpired Certificate of Successful Completion of Examination (CSCE) for General class privileges?

Select	Answer
A	Only the Technician band segments until your upgrade is posted in the FCC database
B	On any General or Technician class band segment except 30 meters and 60 meters
C	Only on the Technician band segments until you have a receipt for the FCC application fee payment
D	On any General or Technician class band segment

7. - G1E11

On what bands may automatically controlled stations transmitting RTTY or data emissions communicate with other automatically controlled digital stations?

Select	Answer
A	On any band segment where digital operation is permitted
B	Only in the non-phone Extra Class segments of the bands
C	Anywhere in the non-phone segments of the 10-meter or shorter wavelength bands
D	Anywhere in the 6-meter or shorter wavelength bands, and in limited segments of some of the HF bands

8. - G2A12

What control is typically adjusted for proper ALC setting on a single sideband transceiver?

Select	Answer
A	RF clipping level
B	Attenuator level
C	Transmit audio or microphone gain
D	Antenna inductance or capacitance

9. - G2B08

What is the voluntary band plan restriction for US stations transmitting within the 48 contiguous states in the 50.1 MHz to 50.125 MHz band segment?

Select	Answer
A	Only digital contacts
B	Only contacts with other stations within the 48 contiguous states
C	Only SSTV contacts
D	Only contacts with stations not within the 48 contiguous states

10. - G2C06

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

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

11. - G2D05

Which of the following indicates that you are looking for an HF contact with any station?

Select	Answer
A	Sign your call sign once, followed by the words “listening for a call” -- if no answer, change frequency and repeat
B	Transmit an unmodulated carried for approximately 10 seconds, followed by “this is” and your call sign, and pause to listen -- repeat as necessary
C	Say “QTC” followed by “this is” and your call sign -- if no answer, change frequency and repeat
D	Repeat “CQ” a few times, followed by “this is,” then your call sign a few times, then pause to listen, repeat as necessary

12. - G2E12

Which of the following describes Winlink?

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

13. - G3A13

What does the A-index measure?

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

14. - G3B03

Which frequency will have the least attenuation for long-distance skip propagation?

Select	Answer
A	Just above the LUF
B	Just below the critical frequency
C	Just above the critical frequency
D	Just below the MUF

15. - G3C06

What is a characteristic of HF scatter?

Select	Answer
A	Signals have a fluttering sound
B	Phone signals have high intelligibility
C	Scatter propagation occurs only at night
D	There are very large, sudden swings in signal strength

16. - G4A02

What is the benefit of using the opposite or “reverse” sideband when receiving CW?

Select	Answer
A	Interference from impulse noise will be eliminated
B	Accidental out-of-band operation can be prevented
C	It may be possible to reduce or eliminate interference from other signals
D	More stations can be accommodated within a given signal passband

17. - G4B06

What is an advantage of a digital multimeter as compared to an analog multimeter?

Select	Answer
A	Better for measuring computer circuits
B	Faster response
C	Higher precision
D	Less prone to overload

18. - G4C10

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

Select	Answer
A	You receive reports of harmonic interference from your station
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	An item of station equipment starts to draw excessive amounts of current

19. - G4D05

How does a signal that reads 20 dB over S9 compare to one that reads S9 on a receiver, assuming a properly calibrated S meter?

Select	Answer
A	It is 20 times more powerful
B	It is 20 times less powerful
C	It is 10 times less powerful
D	It is 100 times more powerful

20. - G4E08

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

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

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. - G5B08

What is the peak-to-peak voltage of a sine wave with an RMS voltage of 120 volts?

Select	Answer
A	240.0 volts
B	169.7 volts
C	339.4 volts
D	84.8 volts

23. - G5C09

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

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

24. - G6A07

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

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

25. - G6B06

What kind of device is an integrated circuit operational amplifier?

Select	Answer
A	Programmable Logic
B	Analog
C	MMIC
D	Digital

26. - G7A05

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

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

27. - G7B01

What is the purpose of neutralizing an amplifier?

Select	Answer
A	To keep the carrier on frequency
B	To eliminate self-oscillations
C	To cut off the final amplifier during standby periods
D	To limit the modulation index

28. - G7C05

Which of the following is characteristic of a direct digital synthesizer (DDS)?

Select	Answer
A	Variable output frequency with the stability of a crystal oscillator
B	Pure sine wave output
C	Extremely narrow tuning range
D	Relatively high-power output

29. - G8A14

What is link margin?

Select	Answer
A	The difference between received power level and minimum required signal level at the input to the receiver
B	The opposite of fade margin
C	Transmit power minus receiver sensitivity
D	Receiver sensitivity plus 3 dB

30. - G8B06

What is the total bandwidth of an FM phone transmission having 5 kHz deviation and 3 kHz modulating frequency?

Select	Answer
A	3 kHz
B	5 kHz
C	8 kHz
D	16 kHz

31. - G8C12

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

Select	Answer
A	Volumetric
B	Viterbi
C	Varicode
D	Binary

32. - G9A05

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

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

33. - G9B07

How does the feed point impedance of a horizontal 1/2 wave dipole antenna change as the antenna height is reduced to 1/10 wavelength above ground?

Select	Answer
A	It steadily increases
B	It is unaffected by the height above ground
C	It steadily decreases
D	It peaks at about 1/8 wavelength above ground

34. - G9C07

What does “front-to-back ratio” mean in reference to a Yagi antenna?

Select	Answer
A	The power radiated in the major lobe compared to that in the opposite direction
B	The relative position of the driven element with respect to the reflectors and directors
C	The ratio of forward gain to dipole gain
D	The number of directors versus the number of reflectors

35. - G9D11

Which of the following is a disadvantage of multiband antennas?

Select	Answer
A	They have poor harmonic rejection
B	They present low impedance on all design frequencies
C	They must be fed with open wire line
D	They must be used with an antenna tuner