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. - G0A06

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

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

2. - G0B09

Which of the following is true of an emergency generator installation?

Select	Answer
A	Fuel should be stored near the generator for rapid refueling in case of an emergency
B	All these choices are correct
C	The generator should be operated in a well-ventilated area
D	The generator must be insulated from ground

3. - G1A07

On which amateur frequencies in the 10-meter band may stations with a General class control operator transmit CW emissions?

Select	Answer
A	28.000 MHz to 28.025 MHz only
B	28.000 MHz to 28.300 MHz only
C	28.025 MHz to 28.300 MHz only
D	The entire band

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	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
C	When the contact is with amateurs in any country except those whose administrations have notified the ITU that they object to such communications
D	Only when the foreign country has a formal third-party agreement filed with the FCC

5. - G1C09

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

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

6. - G1D04

Who must observe the administration of a Technician class license examination?

Select	Answer
A	At least three Volunteer Examiners of Technician class
B	At least three Volunteer Examiners of General class or higher
C	At least two Volunteer Examiners of General class or higher
D	At least two Volunteer Examiners of Technician class or higher

7. - G1E12

When may third-party messages be transmitted via remote control?

Select	Answer
A	Only when the message is intended for licensed radio amateurs
B	Under any circumstances in which third party messages are permitted by FCC rules
C	Under no circumstances except for emergencies
D	Only when the message is intended for third parties in areas where licensing is controlled by the FCC

8. - G2A04

Which mode is most commonly used for voice communications on the 17- and 12-meter bands?

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

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

10. - G2C10

What does the Q signal “QRN” mean?

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

11. - G2D04

Which of the following describes an azimuthal projection map?

Select	Answer
A	A map that shows true bearings and distances from a specific location
B	A map that shows the angle at which an amateur satellite crosses the equator
C	A map that shows the number of degrees longitude that an amateur satellite appears to move westward at the equator with each orbit
D	A map that shows accurate land masses

12. - G2E02

What is VARA?

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

13. - G3A02

What effect does a sudden ionospheric disturbance have on the daytime ionospheric propagation?

Select	Answer
A	It disrupts communications via satellite more than direct communications
B	None, because only areas on the night side of the Earth are affected
C	It enhances propagation on all HF frequencies
D	It disrupts signals on lower frequencies more than those on higher frequencies

14. - G3B01

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

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

15. - G3C07

What makes HF scatter signals often sound distorted?

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

16. - G4A04

What is the effect on plate current of the correct setting of a vacuum-tube RF power amplifier’s TUNE control?

Select	Answer
A	A slow, rhythmic oscillation
B	A pronounced dip
C	A pronounced peak
D	No change will be observed

17. - G4B02

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

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

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 hazardous voltages cannot appear on the chassis
D	It ensures that the neutral wire is grounded

19. - G4D06

How much change in signal strength is typically represented by one S unit?

Select	Answer
A	12 dB
B	18 dB
C	6 dB
D	15 dB

20. - G4E11

What precaution should be taken when connecting a solar panel to a lithium iron phosphate battery?

Select	Answer
A	The solar panel must have a charge controller
B	Ensure the battery is placed terminals-up
C	Ground the solar panel outer metal framework
D	A series resistor must be in place

21. - G5A06

How does a capacitor react to AC?

Select	Answer
A	As the frequency of the applied AC increases, the reactance increases
B	As the frequency of the applied AC increases, the reactance decreases
C	As the amplitude of the applied AC increases, the reactance decreases
D	As the amplitude of the applied AC increases, the reactance increases

22. - G5B03

How many watts of electrical power are consumed if 400 VDC is supplied to an 800-ohm load?

Select	Answer
A	200 watts
B	400 watts
C	0.5 watts
D	3200 watts

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	A capacitor in series
C	An inductor in series
D	A capacitor in parallel

24. - G6A10

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

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

25. - G6B12

Which of these connector types is commonly used for low frequency or dc signal connections to a transceiver?

Select	Answer
A	RCA Phono
B	BNC
C	Type N
D	PL-259

26. - G7A03

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

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

27. - G7B04

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

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

28. - G7C01

What circuit is used to select one of the sidebands from a balanced modulator?

Select	Answer
A	IF amplifier
B	Carrier oscillator
C	Filter
D	RF amplifier

29. - G8A01

How is direct binary FSK modulation generated?

Select	Answer
A	By keying an FM transmitter with a sub-audible tone
B	By changing an oscillator’s frequency directly with a digital control signal
C	By using a transceiver’s computer data interface protocol to change frequencies
D	By reconfiguring the CW keying input to act as a tone generator

30. - G8B03

What is another term for the mixing of two RF signals?

Select	Answer
A	Heterodyning
B	Synthesizing
C	Phase inversion
D	Frequency inversion

31. - G8C08

Which of the following statements is true about PSK31?

Select	Answer
A	Upper case letters are sent with more power
B	Upper case letters use longer Varicode bit sequences and thus slow down transmission
C	Error correction is used to ensure accurate message reception
D	Higher power is needed as compared to RTTY for similar error rates

32. - G9A08

If the SWR on an antenna feed line is 5:1, and a matching network at the transmitter end of the feed line is adjusted to present a 1:1 SWR to the transmitter, what is the resulting SWR on the feed line?

Select	Answer
A	1:1
B	Between 1:1 and 5:1 depending on the reflected power at the transmitter
C	Between 1:1 and 5:1 depending on the characteristic impedance of the line
D	5:1

33. - G9B05

How does antenna height affect the azimuthal radiation pattern of a horizontal dipole HF antenna at elevation angles higher than about 45 degrees?

Select	Answer
A	If the antenna is less than 1/2 wavelength high, the azimuthal pattern is almost omnidirectional
B	Antenna height has no effect on the pattern
C	If the antenna is too high, the pattern becomes unpredictable
D	If the antenna is less than 1/2 wavelength high, radiation off the ends of the wire is eliminated

34. - G9C11

What is a beta or hairpin match?

Select	Answer
A	A series capacitor selected to cancel the inductive reactance of a folded dipole antenna
B	A section of 300-ohm twin-lead transmission line used to match a folded dipole antenna
C	A 1/4 wavelength section of 75-ohm coax in series with the feed point of a Yagi to provide impedance matching
D	A shorted transmission line stub placed at the feed point of a Yagi antenna to provide impedance matching

35. - G9D07

Which of the following describes a log-periodic antenna?

Select	Answer
A	Gain varies logarithmically as a function of frequency
B	Element length and spacing vary logarithmically along the boom
C	SWR varies periodically as a function of boom length
D	Impedance varies periodically as a function of frequency