US Amateur Radio - General (Element 3, 2023-2027) Practice Test

Anonymous User

US Amateur Radio - General (Element 3, 2023-2027) Practice Test

Logging in (or registering) will help the system to select questions that you need to focus on.

1. - G0A04

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

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

2. - G0B13

Where should lightning arrestors be located?

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

3. - G1A09

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

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

4. - G1B09

On what HF frequencies are automatically controlled beacons permitted?

Select	Answer
A	On any frequency if transmissions are in Morse code
B	On any frequency if power is less than 1 watt
C	21.08 MHz to 21.09 MHz
D	28.20 MHz to 28.30 MHz

5. - G1C09

What is the maximum power limit on the 60-meter band?

Select	Answer
A	1500 watts PEP
B	ERP of 100 watts PEP with respect to an isotropic antenna
C	ERP of 100 watts PEP with respect to a dipole
D	10 watts RMS

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	They must have a letter from the FCC showing they once held an amateur or commercial license
B	The applicant must show proof of the appropriate expired license grant and pass the current Element 2 exam
C	There are no requirements other than being able to show a copy of the expired license
D	Contact the FCC to have the license reinstated

7. - G1E10

Why should an amateur operator normally avoid transmitting on 14.100, 18.110, 21.150, 24.930 and 28.200 MHz?

Select	Answer
A	These frequencies are set aside for emergency operations
B	These frequencies are set aside for bulletins from the FCC
C	A system of propagation beacon stations operates on those frequencies
D	A system of automatic digital stations operates on those frequencies

8. - G2A11

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

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

9. - G2B04

When selecting a CW transmitting frequency, what minimum separation from other stations should be used to minimize interference to stations on adjacent frequencies?

Select	Answer
A	5 Hz to 50 Hz
B	3 kHz to 6 kHz
C	1 kHz to 3 kHz
D	150 Hz to 500 Hz

10. - G2C10

What does the Q signal “QRN” mean?

Select	Answer
A	I am troubled by static
B	Send more slowly
C	Zero beat my signal
D	Stop sending

11. - G2D03

What procedure may be used by Volunteer Monitors to localize a station whose continuous carrier is holding a repeater on in their area?

Select	Answer
A	Compare signal strengths between the input and output of the repeater
B	Compare beam headings on the repeater input from their home locations with that of other Volunteer Monitors
C	Compare vertical and horizontal signal strengths on the input frequency
D	All these choices are correct

12. - G2E08

In what segment of the 20-meter band are most digital mode operations commonly found?

Select	Answer
A	At the bottom of the slow-scan TV segment, near 14.230 MHz
B	At the top of the SSB phone segment, near 14.325 MHz
C	Between 14.070 MHz and 14.100 MHz
D	In the middle of the CW segment, near 14.100 MHz

13. - G3A10

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

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

14. - G3B08

What does MUF stand for?

Select	Answer
A	The Maximum Usable Frequency during a 24-hour period
B	The Minimum Usable Frequency during a 24-hour period
C	The Maximum Usable Frequency for communications between two points
D	The Minimum Usable Frequency for communications between two points

15. - G3C01

Which ionospheric region is closest to the surface of Earth?

Select	Answer
A	The F1 region
B	The F2 region
C	The D region
D	The E region

16. - G4A02

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

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

17. - G4B09

When is an analog multimeter preferred to a digital multimeter?

Select	Answer
A	When high precision is desired
B	When measuring the frequency of an oscillator
C	When testing logic circuits
D	When adjusting circuits for maximum or minimum values

18. - G4C01

Which of the following might be useful in reducing RF interference to audio frequency circuits?

Select	Answer
A	Bypass inductor
B	Reverse-biased diode
C	Bypass capacitor
D	Forward-biased diode

19. - G4D07

How much must the power output of a transmitter be raised to change the S meter reading on a distant receiver from S8 to S9?

Select	Answer
A	Approximately 2 times
B	Approximately 8 times
C	Approximately 1.5 times
D	Approximately 4 times

20. - G4E05

Which of the following most limits an HF mobile installation?

Select	Answer
A	FCC rules limiting mobile output power on the 75-meter band
B	The wire gauge of the DC power line to the transceiver
C	“Picket fencing”
D	Efficiency of the electrically short antenna

21. - G5A12

What occurs in an LC circuit at resonance?

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

22. - G5B05

How many watts are consumed when a current of 7.0 milliamperes flows through a 1,250-ohm resistance?

Select	Answer
A	Approximately 11 milliwatts
B	Approximately 61 watts
C	Approximately 61 milliwatts
D	Approximately 11 watts

23. - G5C10

What is the inductance of three 10-millihenry inductors connected in parallel?

Select	Answer
A	0.30 henries
B	30 millihenries
C	3.3 millihenries
D	3.3 henries

24. - G6A10

Which element of a vacuum tube regulates the flow of electrons between cathode and plate?

Select	Answer
A	Control grid
B	Suppressor grid
C	Screen grid
D	Trigger electrode

25. - G6B04

What is a typical upper frequency limit for low SWR operation of 50-ohm BNC connectors?

Select	Answer
A	40 GHz
B	4 GHz
C	500 MHz
D	50 MHz

26. - G7A13

Which symbol in Figure G7-1 represents a tapped inductor?

Select	Answer
A	Symbol 1
B	Symbol 11
C	Symbol 7
D	Symbol 6

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	FM
C	All these choices are correct
D	AM

28. - G7C05

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

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

29. - G8A02

What is the name of the process that changes the phase angle of an RF signal to convey information?

Select	Answer
A	Phase convolution
B	Phase modulation
C	Phase transformation
D	Phase inversion

30. - G8B02

What is the term for interference from a signal at twice the IF frequency from the desired signal?

Select	Answer
A	Intermediate interference
B	Quadrature response
C	Mixer interference
D	Image response

31. - G8C10

How does forward error correction (FEC) allow the receiver to correct data errors?

Select	Answer
A	By controlling transmitter output power for optimum signal strength
B	By using a parity bit with each character
C	By transmitting redundant information with the data
D	By using the Varicode character set

32. - G9A03

What is the nominal characteristic impedance of “window line” transmission line?

Select	Answer
A	100 ohms
B	75 ohms
C	50 ohms
D	450 ohms

33. - G9B02

Which of the following is a common way to adjust the feed point impedance of an elevated quarter-wave ground-plane vertical antenna to be approximately 50 ohms?

Select	Answer
A	Lengthen the radials beyond one wavelength
B	Slope the radials downward
C	Slope the radials upward
D	Coil the radials

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

35. - G9D03

In which direction is the maximum radiation from a VHF/UHF “halo” antenna?

Select	Answer
A	Omnidirectional in the plane of the halo
B	Opposite the feed point
C	Broadside to the plane of the halo
D	On the same side as the feed point

Figure G7-1