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. - G1A09

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

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

2. - G1B03

Which of the following is a purpose of a beacon station as identified in the FCC rules?

Select	Answer
A	Transmission of bulletins of general interest to Amateur Radio licensees
B	Automatic identification of repeaters
C	Identifying net frequencies
D	Observation of propagation and reception

3. - G1C04

Which of the following limitations apply to transmitter power on every amateur band?

Select	Answer
A	Power must be limited to 200 watts when transmitting between 14.100 MHz and 14.150 MHz
B	Effective radiated power cannot exceed 1500 watts
C	Power should be limited as necessary to avoid interference to another radio service on the frequency
D	Only the minimum power necessary to carry out the desired communications should be used

4. - G1D02

What license examinations may you administer when you are an accredited VE holding a General Class operator license?

Select	Answer
A	General only
B	General and Technician
C	Technician only
D	Extra, General and Technician

5. - G1E11

Which of the following is the FCC term for an unattended digital station that transfers messages to and from the Internet?

Select	Answer
A	Robotically controlled station
B	Fail-safe digital station
C	Locally controlled station
D	Automatically controlled digital station

6. - G2A02

Which of the following modes is most commonly used for voice communications on the 160-meter, 75-meter, and 40-meter bands?

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

7. - G2B12

When is an amateur station allowed to use any means at its disposal to assist another station in distress?

Select	Answer
A	Only on authorized HF frequencies
B	Only when transmitting in RACES
C	At any time during an actual emergency
D	At any time when transmitting in an organized net

8. - G2C10

What does the Q signal "QRN" mean?

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

9. - G2D01

What is the Amateur Auxiliary to the FCC?

Select	Answer
A	Amateur volunteers who conduct amateur licensing examinations
B	Amateur volunteers who use their station equipment to help civil defense organizations in times of emergency
C	Amateur volunteers who are formally enlisted to monitor the airwaves for rules violations
D	Amateur volunteers who conduct frequency coordination for amateur VHF repeaters

10. - G2E11

What is indicated on a waterfall display by one or more vertical lines adjacent to a PSK31 signal?

Select	Answer
A	Backscatter propagation
B	Insufficient modulation
C	Overmodulation
D	Long Path propagation

11. - G3A03

Approximately how long does it take the increased ultraviolet and X-ray radiation from solar flares to affect radio propagation on the Earth?

Select	Answer
A	28 days
B	8 minutes
C	20 to 40 hours
D	1 to 2 hours

12. - G3B02

Which of the following is a good indicator of the possibility of sky-wave propagation on the 6-meter band?

Select	Answer
A	Long delayed echoes on the 10-meter band
B	Long skip sky-wave propagation on the 10-meter band
C	Short skip sky-wave propagation on the 10-meter band
D	Severe attenuation of signals on the 10-meter band

13. - G3C12

Which ionospheric layer is the most absorbent of long skip signals during daylight hours on frequencies below 10 MHz?

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

14. - G4A13

What is one reason to use the attenuator function that is present on many HF transceivers?

Select	Answer
A	To reduce signal overload due to strong incoming signals
B	To reduce power consumption when operating from batteries
C	To reduce the transmitter power when driving a linear amplifier
D	To slow down received CW signals for better copy

15. - G4B06

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

Select	Answer
A	Faster response
B	Better for RF measurements
C	Better precision for most uses
D	Better for measuring computer circuits

16. - G4C07

What is one good way to avoid unwanted effects of stray RF energy in an amateur station?

Select	Answer
A	Install an RF filter in series with the ground wire
B	Connect all equipment grounds together
C	Install a few ferrite beads on the ground wire where it connects to your station
D	Use a ground loop for best conductivity

17. - G4D06

Where is an S meter found?

Select	Answer
A	In a conductance bridge
B	In a receiver
C	In a transmitter
D	In an SWR bridge

18. - G4E11

Which of the following is a disadvantage of using wind as the primary source of power for an emergency station?

Select	Answer
A	A large energy storage system is needed to supply power when the wind is not blowing
B	The conversion efficiency from mechanical energy to electrical energy is less than 2 percent
C	All of these choices are correct
D	The voltage and current ratings of such systems are not compatible with amateur equipment

19. - G5A03

Which of the following causes opposition to the flow of alternating current in an inductor?

Select	Answer
A	Reluctance
B	Admittance
C	Conductance
D	Reactance

20. - G5B01

What dB change represents a two-times increase or decrease in power?

Select	Answer
A	Approximately 2 dB
B	Approximately 3 dB
C	Approximately 6 dB
D	Approximately 12 dB

21. - G5C04

What is the total resistance of three 100 ohm resistors in parallel?

Select	Answer
A	33.3 ohms
B	0.30 ohms
C	300 ohms
D	0.33 ohms

22. - G6A14

Which of the following is an advantage of ceramic capacitors as compared to other types of capacitors?

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

23. - G6B14

Which of these connector types is commonly used for audio signals in Amateur Radio stations?

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

24. - G7A11

Which symbol in figure G7-1 represents an NPN junction transistor?

Select	Answer
A	Symbol 2
B	Symbol 7
C	Symbol 1
D	Symbol 11

25. - G7B14

Which of the following describes a linear amplifier?

Select	Answer
A	An amplifier in which the output preserves the input waveform
B	Any RF power amplifier used in conjunction with an amateur transceiver
C	An amplifier used as a frequency multiplier
D	A Class C high efficiency amplifier

26. - G7C09

Which of the following is needed for a Digital Signal Processor IF filter?

Select	Answer
A	A digital processor chip
B	All of the these choices are correct
C	An analog to digital converter
D	A digital to analog converter

27. - G8A01

How is an FSK signal generated?

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

28. - G8B01

What receiver stage combines a 14.250 MHz input signal with a 13.795 MHz oscillator signal to produce a 455 kHz intermediate frequency (IF) signal?

Select	Answer
A	BFO
B	Mixer
C	VFO
D	Discriminator

29. - G8C05

In the PACTOR protocol, what is meant by an NAK response to a transmitted packet?

Select	Answer
A	The receiver is reporting the packet was received without error
B	The entire file has been received correctly
C	The receiver is busy decoding the packet
D	The receiver is requesting the packet be retransmitted

30. - G9A07

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

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

31. - G9B05

How does antenna height affect the horizontal (azimuthal) radiation pattern of a horizontal dipole HF antenna?

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

32. - G9C03

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

Select	Answer
A	Low feed point impedance increases bandwidth
B	The director is normally the shortest element
C	The reflector is normally the shortest element
D	The driven element is the longest element

33. - G9D04

What is the primary purpose of antenna traps?

Select	Answer
A	To permit multiband operation
B	To prevent out of band operation
C	To notch spurious frequencies
D	To provide balanced feed point impedance

34. - G0A10

What is one thing that can be done if evaluation shows that a neighbor might receive more than the allowable limit of RF exposure from the main lobe of a directional antenna?

Select	Answer
A	Take precautions to ensure that the antenna cannot be pointed in their direction
B	Post a warning sign that is clearly visible to the neighbor
C	Use an antenna with a higher front-to-back ratio
D	Change to a non-polarized antenna with higher gain

35. - G0B15

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

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

Figure G7-1