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. - G1A14

In what ITU region is operation in the 7.175 to 7.300 MHz band permitted for a control operator holding an FCC issued General Class license?

Select	Answer
A	Region 2
B	Region 3
C	Region 1
D	All three regions

2. - G1B03

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

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

3. - G1C09

What is the maximum symbol rate permitted for RTTY or data emission transmitted on the 1.25-meter and 70-centimeter bands?

Select	Answer
A	300 baud
B	56 kilobaud
C	1200 baud
D	19.6 kilobaud

4. - G1D04

Which of the following is a requirement for administering a Technician Class license examination?

Select	Answer
A	At least three General Class or higher VEs must observe the examination
B	At least two General Class or higher VEs must be present, but only one need be Extra Class
C	At least two General Class or higher VEs must be present
D	At least three VEs of Technician Class or higher must observe the examination

5. - G1E08

Which of the following is a requirement for a non-licensed person to communicate with a foreign Amateur Radio station from a station with an FCC-granted license at which an FCC licensed control operator is present?

Select	Answer
A	The foreign amateur station must be in a country with which the United States has a third party agreement
B	The control operator must have at least a General Class license
C	Information must be exchanged in English
D	All of these choices are correct

6. - G2A01

Which sideband is most commonly used for voice communications on frequencies of 14 MHz or higher?

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

7. - G2B07

Which of the following complies with good amateur practice when choosing a frequency on which to initiate a call?

Select	Answer
A	All of these choices are correct
B	Follow the voluntary band plan for the operating mode you intend to use
C	Check to see if the channel is assigned to another station
D	Identify your station by transmitting your call sign at least 3 times

8. - G2C10

What does the Q signal "QRN" mean?

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

9. - G2D01

What is the Amateur Auxiliary to the FCC?

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

10. - G2E01

Which mode is normally used when sending an RTTY signal via AFSK with an SSB transmitter?

Select	Answer
A	DSB
B	LSB
C	USB
D	CW

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

12. - G3B07

What does LUF stand for?

Select	Answer
A	The Longest Universal Function for communications between two points
B	The Longest Universal Function during a 24 hour period
C	The Lowest Usable Frequency during a 24 hour period
D	The Lowest Usable Frequency for communications between two points

13. - G3C04

What does the term "critical angle" mean as used in radio wave propagation?

Select	Answer
A	The long path azimuth of a distant station
B	The short path azimuth of a distant station
C	The highest takeoff angle that will return a radio wave to the Earth under specific ionospheric conditions
D	The lowest takeoff angle that will return a radio wave to the Earth under specific ionospheric conditions

14. - G4A08

What is the correct adjustment for the load or coupling control of a vacuum tube RF power amplifier?

Select	Answer
A	Maximum power output without exceeding maximum allowable plate current
B	Highest plate voltage while minimizing grid current
C	Minimum plate current without exceeding maximum allowable grid current
D	Minimum SWR on the antenna

15. - G4B11

Which of the following must be connected to an antenna analyzer when it is being used for SWR measurements?

Select	Answer
A	Transmitter
B	Receiver
C	All of these choices are correct
D	Antenna and feed line

16. - G4C03

What sound is heard from an audio device or telephone if there is interference from a nearby single sideband phone transmitter?

Select	Answer
A	On-and-off humming or clicking
B	Clearly audible speech
C	Distorted speech
D	A steady hum whenever the transmitter is on the air

17. - G4D03

Which of the following can be the result of an incorrectly adjusted speech processor?

Select	Answer
A	Excessive background pickup
B	All of these choices are correct
C	Distorted speech
D	Splatter

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	All of these choices are correct
C	The conversion efficiency from mechanical energy to electrical energy is less than 2 percent
D	The voltage and current ratings of such systems are not compatible with amateur equipment

19. - G5A12

What is one reason to use an impedance matching transformer?

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

20. - G5B10

What percentage of power loss would result from a transmission line loss of 1 dB?

Select	Answer
A	25.9 percent
B	20.5 percent
C	10.9 percent
D	12.2 percent

21. - G5C06

What is the RMS voltage across a 500-turn secondary winding in a transformer if the 2250-turn primary is connected to 120 VAC?

Select	Answer
A	5.9 volts
B	26.7 volts
C	540 volts
D	2370 volts

22. - G6A02

What is an advantage of the low internal resistance of nickel-cadmium batteries?

Select	Answer
A	Long life
B	High discharge current
C	High voltage
D	Rapid recharge

23. - G6B10

What two devices in an Amateur Radio station might be connected using a USB interface?

Select	Answer
A	Microphone and transceiver
B	Power supply and amplifier
C	Amplifier and antenna
D	Computer and transceiver

24. - G7A07

What is the output waveform of an unfiltered full-wave rectifier connected to a resistive load?

Select	Answer
A	A steady DC voltage
B	A series of DC pulses at twice the frequency of the AC input
C	A sine wave at half the frequency of the AC input
D	A series of DC pulses at the same frequency as the AC input

25. - G7B09

What determines the frequency of an LC oscillator?

Select	Answer
A	The inductance and capacitance in the tank circuit
B	The number of stages in the divider
C	The time delay of the lag circuit
D	The number of stages in the counter

26. - G7C04

What circuit is used to combine signals from the IF amplifier and BFO and send the result to the AF amplifier in some single sideband receivers?

Select	Answer
A	IF filter
B	RF oscillator
C	Product detector
D	Balanced modulator

27. - G8A08

Which of the following is an effect of overmodulation?

Select	Answer
A	Frequency drift
B	Excessive bandwidth
C	Insufficient audio
D	Insufficient bandwidth

28. - G8B08

Why is it important to know the duty cycle of the mode you are using when transmitting?

Select	Answer
A	To aid in tuning your transmitter
B	Some modes have high duty cycles which could exceed the transmitter's average power rating.
C	To allow time for the other station to break in during a transmission
D	All of these choices are correct

29. - G8C05

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

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

30. - G9A10

What standing wave ratio will result when connecting a 50 ohm feed line to a non-reactive load having 10 ohm impedance?

Select	Answer
A	2:1
B	50:1
C	5:1
D	1:5

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 too high, the pattern becomes unpredictable
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 less than 1/2 wavelength high, radiation off the ends of the wire is eliminated

32. - G9C06

What configuration of the loops of a two-element quad antenna must be used for the antenna to operate as a beam antenna, assuming one of the elements is used as a reflector?

Select	Answer
A	There must be an open circuit in the driven element at the point opposite the feed point
B	The reflector element must be approximately 5 percent shorter than the driven element
C	The driven element must be fed with a balun transformer
D	The reflector element must be approximately 5 percent longer than the driven element

33. - G9D03

At what height above ground is an NVIS antenna typically installed?

Select	Answer
A	As close to 1/2 wavelength as possible
B	As close to one wavelength as possible
C	Between 1/10 and 1/4 wavelength
D	Height is not critical as long as it is significantly more than 1/2 wavelength

34. - G0A07

What effect does transmitter duty cycle have when evaluating RF exposure?

Select	Answer
A	A higher transmitter duty cycle permits greater short-term exposure levels
B	Low duty cycle transmitters are exempt from RF exposure evaluation requirements
C	A lower transmitter duty cycle permits greater short-term exposure levels
D	High duty cycle transmitters are exempt from RF exposure requirements

35. - G0B03

Which size of fuse or circuit breaker would be appropriate to use with a circuit that uses AWG number 14 wiring?

Select	Answer
A	60 amperes
B	30 amperes
C	100 amperes
D	15 amperes