US Amateur Radio - General (Element 3, 2015-2019) Practice Test

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US Amateur Radio - General (Element 3, 2015-2019) Practice Test

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1. - G1A06

Which of the following frequencies is within the General Class portion of the 75-meter phone band?

Select	Answer
A	3750 kHz
B	3900 kHz
C	1875 kHz
D	4005 kHz

2. - G1B07

What are the restrictions on the use of abbreviations or procedural signals in the Amateur Service?

Select	Answer
A	They are not permitted
B	They may be used if they do not obscure the meaning of a message
C	Only "Q" signals are permitted
D	Only "10 codes" are permitted

3. - G1C03

What is the maximum bandwidth permitted by FCC rules for Amateur Radio stations transmitting on USB frequencies in the 60-meter band?

Select	Answer
A	2.8 kHz
B	1.8 kHz
C	5.6 kHz
D	3 kHz

4. - G1D08

Which of the following criteria must be met for a non-U.S. citizen to be an accredited Volunteer Examiner?

Select	Answer
A	The person must be a resident of the U.S. for a minimum of 5 years
B	None of these choices is correct; a non-U.S. citizen cannot be a Volunteer Examiner
C	The person must hold an FCC granted Amateur Radio license of General Class or above
D	The person's home citizenship must be in ITU region 2

5. - G1E04

Which of the following conditions require a licensed Amateur Radio operator to take specific steps to avoid harmful interference to other users or facilities?

Select	Answer
A	All of these choices are correct
B	When a station is transmitting spread spectrum emissions
C	When using a band where the Amateur Service is secondary
D	When operating within one mile of an FCC Monitoring Station

6. - G2A09

Why do most amateur stations use lower sideband on the 160-meter, 75-meter and 40-meter bands?

Select	Answer
A	Lower sideband is the only sideband legal on these frequency bands
B	Current amateur practice is to use lower sideband on these frequency bands
C	Lower sideband is more efficient than upper sideband at these frequencies
D	Because it is fully compatible with an AM detector

7. - G2B09

Who may be the control operator of an amateur station transmitting in RACES to assist relief operations during a disaster?

Select	Answer
A	A person holding an FCC issued amateur operator license or an appropriate government official
B	Any control operator when normal communication systems are operational
C	Only a person holding an FCC issued amateur operator license
D	Only a RACES net control operator

8. - G2C07

When sending CW, what does a "C" mean when added to the RST report?

Select	Answer
A	Report was read from an S meter rather than estimated
B	Chirpy or unstable signal
C	Key clicks
D	100 percent copy

9. - G2D02

Which of the following are objectives of the Amateur Auxiliary?

Select	Answer
A	To coordinate repeaters for efficient and orderly spectrum usage
B	To encourage self-regulation and compliance with the rules by radio amateur operators
C	To provide emergency and public safety communications
D	To conduct efficient and orderly amateur licensing examinations

10. - G2E10

Which of the following is a way to establish contact with a digital messaging system gateway station?

Select	Answer
A	Send QRL in Morse code
B	Transmit a connect message on the station's published frequency
C	Send an email to the system control operator
D	Respond when the station broadcasts its SSID

11. - G3A16

What is a possible benefit to radio communications resulting from periods of high geomagnetic activity?

Select	Answer
A	Reduced long delayed echoes
B	Higher signal strength for HF signals passing through the polar regions
C	Auroras that can reflect VHF signals
D	Improved HF long path propagation

12. - G3B08

What does MUF stand for?

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

13. - G3C01

Which ionospheric layer is closest to the surface of the Earth?

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

14. - G4A15

Which of the following can be a symptom of transmitted RF being picked up by an audio cable carrying AFSK data signals between a computer and a transceiver?

Select	Answer
A	All of these choices are correct
B	The transmitter signal is distorted
C	The VOX circuit does not un-key the transmitter
D	Frequent connection timeouts

15. - G4B09

Which of the following can be determined with a field strength meter?

Select	Answer
A	The presence and amount of amplitude distortion of a transmitter
B	The radiation resistance of an antenna
C	The radiation pattern of an antenna
D	The presence and amount of phase distortion of a transmitter

16. - G4C05

What might be the problem if you receive an RF burn when touching your equipment while transmitting on an HF band, assuming the equipment is connected to a ground rod?

Select	Answer
A	The ground wire has high impedance on that frequency
B	The ground rod is resonant
C	Flat braid rather than round wire has been used for the ground wire
D	Insulated wire has been used for the ground wire

17. - 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 100 times more powerful
C	It is 20 times less powerful
D	It is 10 times less powerful

18. - G4E02

What is the purpose of a corona ball on a HF mobile antenna?

Select	Answer
A	To reduce the chance of damage if the antenna should strike an object
B	To narrow the operating bandwidth of the antenna
C	To increase the "Q" of the antenna
D	To reduce high voltage discharge from the tip of the antenna

19. - G5A12

What is one reason to use an impedance matching transformer?

Select	Answer
A	To reduce power supply ripple
B	To minimize radiation resistance
C	To maximize the transfer of power
D	To minimize transmitter power output

20. - G5B04

How many watts of electrical power are used by a 12 VDC light bulb that draws 0.2 amperes?

Select	Answer
A	6 watts
B	24 watts
C	2.4 watts
D	60 watts

21. - G5C10

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

Select	Answer
A	0.30 henrys
B	3.3 millihenrys
C	3.3 henrys
D	30 millihenrys

22. - G6A19

How should the winding axes of two solenoid inductors be oriented to minimize their mutual inductance?

Select	Answer
A	At right angles to each other
B	Parallel to each other
C	In line
D	Interleaved

23. - G6B03

Which of the following is an advantage of CMOS integrated circuits compared to TTL integrated circuits?

Select	Answer
A	Low power consumption
B	Better suited for RF amplification
C	Better suited for power supply regulation
D	High power handling capability

24. - G7A09

Which symbol in figure G7-1 represents a field effect transistor?

Select	Answer
A	Symbol 4
B	Symbol 5
C	Symbol 1
D	Symbol 2

25. - G7B07

What are the basic components of virtually all sine wave oscillators?

Select	Answer
A	A frequency multiplier and a mixer
B	A filter and an amplifier operating in a feedback loop
C	A circulator and a filter operating in a feed-forward loop
D	An amplifier and a divider

26. - G7C11

What is meant by the term "software defined radio" (SDR)?

Select	Answer
A	A computer model that can simulate performance of a radio to aid in the design process
B	A radio that provides computer interface for automatic logging of band and frequency
C	A radio in which most major signal processing functions are performed by software
D	A radio that uses crystal filters designed using software

27. - G8A11

What is the modulation envelope of an AM signal?

Select	Answer
A	The carrier frequency that contains the signal
B	The bandwidth of the modulated signal
C	Spurious signals that envelop nearby frequencies
D	The waveform created by connecting the peak values of the modulated signal

28. - G8B02

If a receiver mixes a 13.800 MHz VFO with a 14.255 MHz received signal to produce a 455 kHz intermediate frequency (IF) signal, what type of interference will a 13.345 MHz signal produce in the receiver?

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

29. - G8C10

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

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

30. - G9A07

What must be done to prevent standing waves on an antenna feed line?

Select	Answer
A	The antenna feed point impedance must be matched to the characteristic impedance of the feed line
B	The feed line must be cut to a length equal to an odd number of electrical quarter wavelengths
C	The feed line must be cut to a length equal to an even number of physical half wavelengths
D	The antenna feed point must be at DC ground potential

31. - G9B01

What is one disadvantage of a directly fed random-wire HF antenna?

Select	Answer
A	You may experience RF burns when touching metal objects in your station
B	It produces only vertically polarized radiation
C	It is more effective on the lower HF bands than on the higher bands
D	It must be longer than 1 wavelength

32. - G9C04

Which statement about a three-element, single-band Yagi antenna is true?

Select	Answer
A	The reflector is normally the shortest element
B	The director is normally the longest element
C	The reflector is normally the longest element
D	All of the elements must be the same length

33. - G9D05

What is an advantage of vertical stacking of horizontally polarized Yagi antennas?

Select	Answer
A	It narrows the main lobe in elevation
B	It allows simultaneous vertical and horizontal polarization
C	It allows quick selection of vertical or horizontal polarization
D	It narrows the main lobe in azimuth

34. - G0A08

Which of the following steps must an amateur operator take to ensure compliance with RF safety regulations when transmitter power exceeds levels specified in FCC Part 97.13?

Select	Answer
A	Perform a routine RF exposure evaluation
B	All of these choices are correct
C	Post a copy of FCC Part 97.13 in the station
D	Post a copy of OET Bulletin 65 in the station

35. - G0B08

What should be done by any person preparing to climb a tower that supports electrically powered devices?

Select	Answer
A	All of these choices are correct
B	Make sure all circuits that supply power to the tower are locked out and tagged
C	Notify the electric company that a person will be working on the tower
D	Unground the base of the tower

Figure G7-1