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. - G0A05

What must you do if an evaluation of your station shows that the RF energy radiated by your station exceeds permissible limits for possible human absorption?

Select	Answer
A	All these choices are correct
B	Secure written permission from your neighbors to operate above the controlled MPE limits
C	Take action to prevent human exposure to the excessive RF fields
D	File an Environmental Impact Statement (EIS-97) with the FCC

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. - G1A08

Which HF bands have segments exclusively allocated to Amateur Extra licensees?

Select	Answer
A	All HF bands except 160 meters and 10 meters
B	All HF bands
C	80 meters, 40 meters, 20 meters, and 15 meters
D	60 meters, 30 meters, 17 meters, and 12 meters

4. - G1B04

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

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

5. - G1C06

What is the limit for transmitter power on the 1.8 MHz band?

Select	Answer
A	1000 watts PEP output
B	1200 watts PEP output
C	200 watts PEP output
D	1500 watts PEP output

6. - G1D02

What license examinations may you administer as an accredited Volunteer Examiner holding a General class operator license?

Select	Answer
A	Technician only
B	General and Technician
C	Amateur Extra, General, and Technician
D	None, only Amateur Extra class licensees may be accredited

7. - G1E11

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

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

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 allows “hands free” operation
C	It occupies less bandwidth
D	It provides more power output

9. - G2B02

What is the first thing you should do if you are communicating with another amateur station and hear a station in distress break in?

Select	Answer
A	Acknowledge the station in distress and determine what assistance may be needed
B	Immediately decrease power to avoid interfering with the station in distress
C	Immediately cease all transmissions
D	Inform your local emergency coordinator

10. - G2C05

What is the best speed to use when answering a CQ in Morse code?

Select	Answer
A	At the standard calling speed of 10 wpm
B	At the standard calling speed of 5 wpm
C	The fastest speed at which you are comfortable copying, but no slower than the CQ
D	The fastest speed at which you are comfortable copying, but no faster than the CQ

11. - G2D10

What is QRP operation?

Select	Answer
A	Remote piloted model control
B	Low-power transmit operation
C	Traffic relay procedure net operation
D	Transmission using Quick Response Protocol

12. - G2E08

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

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

13. - G3A01

How does a higher sunspot number affect HF propagation?

Select	Answer
A	A zero sunspot number indicates undisturbed conditions
B	Higher sunspot numbers generally indicate a greater probability of good propagation at higher frequencies
C	Lower sunspot numbers generally indicate greater probability of sporadic E propagation
D	A zero sunspot number indicates that radio propagation is not possible on any band

14. - G3B04

Which of the following is a way to determine current propagation on a desired band from your station?

Select	Answer
A	Check the A-index
B	Send a series of dots and listen for echoes
C	Use a network of automated receiving stations on the internet to see where your transmissions are being received
D	All these choices are correct

15. - G3C03

Why is skip propagation via the F2 region longer than that via the other ionospheric regions?

Select	Answer
A	Because it is the highest
B	Because of temperature inversions
C	Because of the Doppler effect
D	Because it is the densest

16. - G4A02

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

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

17. - G4B07

What signals are used to conduct a two-tone test?

Select	Answer
A	Two non-harmonically related audio signals
B	Two audio signals of the same frequency shifted 90 degrees
C	Two swept frequency tones
D	Two audio frequency range square wave signals of equal amplitude

18. - G4C02

Which of the following could be a cause of interference covering a wide range of frequencies?

Select	Answer
A	Not using a balun or line isolator to feed balanced antennas
B	Using a balun to feed an unbalanced antenna
C	Arcing at a poor electrical connection
D	Lack of rectification of the transmitter’s signal in power conductors

19. - G4D11

How close to the upper edge of a band’s phone segment should your displayed carrier frequency be when using 3 kHz wide USB?

Select	Answer
A	At least 3 kHz above the edge of the band
B	At least 1 kHz above the edge of the segment
C	At least 1 kHz below the edge of the segment
D	At least 3 kHz below the edge of the band

20. - G4E11

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

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

21. - G5A07

What is the term for the inverse of impedance?

Select	Answer
A	Conductance
B	Admittance
C	Susceptance
D	Reluctance

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

23. - G5C01

What causes a voltage to appear across the secondary winding of a transformer when an AC voltage source is connected across its primary winding?

Select	Answer
A	Mutual capacitance
B	Displacement current coupling
C	Mutual inductance
D	Capacitive coupling

24. - G6A08

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

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

25. - G6B11

What is an SMA connector?

Select	Answer
A	A type-S to type-M adaptor
B	A small threaded connector suitable for signals up to several GHz
C	A type of push-on connector intended for high-voltage applications
D	A connector designed for serial multiple access signals

26. - G7A10

Which symbol in figure G7-1 represents a Zener diode?

Select	Answer
A	Symbol 4
B	Symbol 1
C	Symbol 5
D	Symbol 11

27. - G7B01

What is the purpose of neutralizing an amplifier?

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

28. - G7C14

The bandwidth of a band-pass filter is measured between what two frequencies?

Select	Answer
A	Cutoff and rolloff
B	Upper and lower half-power
C	Image and harmonic
D	Pole and zero

29. - G8A14

What is link margin?

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

30. - G8B02

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

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

31. - G8C02

Which digital mode is used as a low-power beacon for assessing HF propagation?

Select	Answer
A	PSK31
B	SSB-SC
C	MFSK16
D	WSPR

32. - G9A01

Which of the following factors determine the characteristic impedance of a parallel conductor feed line?

Select	Answer
A	The frequency of the signal and the length of the line
B	The distance between the centers of the conductors and the radius of the conductors
C	The distance between the centers of the conductors and the length of the line
D	The radius of the conductors and the frequency of the signal

33. - G9B12

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

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

34. - G9C04

How does antenna gain in dBi compare to gain stated in dBd for the same antenna?

Select	Answer
A	Gain in dBi is 2.15 dB higher
B	Gain in dBd is 1.25 dBd lower
C	Gain in dBd is 1.25 dBd higher
D	Gain in dBi is 2.15 dB lower

35. - G9D07

Which of the following describes a log-periodic antenna?

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

Figure G7-1