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. - G1A02

On which of the following bands is phone operation prohibited?

Select	Answer
A	30 meters
B	17 meters
C	12 meters
D	160 meters

2. - G1B06

When is an amateur station permitted to transmit secret codes?

Select	Answer
A	Only when the information is of a routine, personal nature
B	Only with Special Temporary Authorization from the FCC
C	During a declared communications emergency
D	To control a space station

3. - G1C11

What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 2-meter band?

Select	Answer
A	56 kilobaud
B	300 baud
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 two General Class or higher VEs must be present, but only one need be Extra Class
B	At least three VEs of Technician Class or higher must observe the examination
C	At least two General Class or higher VEs must be present
D	At least three General Class or higher VEs 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	All of these choices are correct
B	The control operator must have at least a General Class license
C	Information must be exchanged in English
D	The foreign amateur station must be in a country with which the United States has a third party agreement

6. - G2A01

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

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

7. - G2B06

What is a practical way to avoid harmful interference on an apparently clear frequency before calling CQ on CW or phone?

Select	Answer
A	Send "QSY" on CW or if using phone, announce "the frequency is in use", then give your call and listen for a response
B	Send the letter "V" in Morse code several times and listen for a response or say "test" several times and listen for a response
C	Listen for 2 minutes before calling CQ
D	Send "QRL?" on CW, followed by your call sign; or, if using phone, ask if the frequency is in use, followed by your call sign

8. - G2C04

What does the Q signal "QRL?" mean?

Select	Answer
A	"Are you busy?", or "Is this frequency in use?"
B	"Are you operating full break-in" or "Can you operate full break-in?"
C	"Will you keep the frequency clear?"
D	"Are you listening only for a specific station?"

9. - G2D03

What skills learned during hidden transmitter hunts are of help to the Amateur Auxiliary?

Select	Answer
A	Hunters have an opportunity to transmit on non-amateur frequencies
B	Direction finding used to locate stations violating FCC Rules
C	Identification of out of band operation
D	Identification of different call signs

10. - G2E14

What could be wrong if you cannot decode an RTTY or other FSK signal even though it is apparently tuned in properly?

Select	Answer
A	You may have selected the wrong baud rate
B	The mark and space frequencies may be reversed
C	You may be listening on the wrong sideband
D	All of these choices are correct

11. - G3A11

Approximately how long is the typical sunspot cycle?

Select	Answer
A	8 minutes
B	11 years
C	28 days
D	40 hours

12. - G3B03

Which of the following applies when selecting a frequency for lowest attenuation when transmitting on HF?

Select	Answer
A	Select a frequency just below the MUF
B	Select a frequency just above the critical frequency
C	Select a frequency just above the LUF
D	Select a frequency just below the critical frequency

13. - G3C06

What is a characteristic of HF scatter signals?

Select	Answer
A	They have high intelligibility
B	All of these choices are correct
C	They have a wavering sound
D	They have very large swings in signal strength

14. - G4A10

What is the purpose of an electronic keyer?

Select	Answer
A	Computer interface for PSK and RTTY operation
B	Automatic generation of strings of dots and dashes for CW operation
C	VOX operation
D	Automatic transmit/receive switching

15. - G4B09

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

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

16. - G4C04

What is the effect on an audio device or telephone system if there is interference from a nearby CW transmitter?

Select	Answer
A	A CW signal at a nearly pure audio frequency
B	A chirpy CW signal
C	On-and-off humming or clicking
D	Severely distorted audio

17. - G4D08

What frequency range is occupied by a 3 kHz LSB signal when the displayed carrier frequency is set to 7.178 MHz?

Select	Answer
A	7.175 to 7.178 MHz
B	7.178 to 7.184 MHz
C	7.178 to 7.181 MHz
D	7.1765 to 7.1795 MHz

18. - G4E01

What is the purpose of a capacitance hat on a mobile antenna?

Select	Answer
A	To increase the power handling capacity of a whip antenna
B	To allow remote tuning
C	To electrically lengthen a physically short antenna
D	To allow automatic band changing

19. - G5A08

Why is impedance matching important?

Select	Answer
A	So the source can deliver maximum power to the load
B	To ensure that there is less resistance than reactance in the circuit
C	To ensure that the resistance and reactance in the circuit are equal
D	So the load will draw minimum power from the source

20. - G5B10

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

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

21. - G5C08

What is the equivalent capacitance of two 5.0 nanofarad capacitors and one 750 picofarad capacitor connected in parallel?

Select	Answer
A	10.750 nanofarads
B	3583 picofarads
C	1733 picofarads
D	576.9 nanofarads

22. - G6A19

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

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

23. - G6B16

Which of the following describes a type N connector?

Select	Answer
A	A small bayonet connector used for data circuits
B	A moisture-resistant RF connector useful to 10 GHz
C	A threaded connector used for hydraulic systems
D	An audio connector used in surround-sound installations

24. - G7A03

What is the peak-inverse-voltage across the rectifiers in a full-wave bridge power supply?

Select	Answer
A	Equal to the normal peak output voltage of the power supply
B	Double the normal peak output voltage of the power supply
C	Half the normal output voltage of the power supply
D	One-quarter the normal output voltage of the power supply

25. - G7B10

Which of the following is a characteristic of a Class A amplifier?

Select	Answer
A	No need for bias
B	Low distortion
C	High Efficiency
D	Low standby power

26. - G7C03

What circuit is used to process signals from the RF amplifier and local oscillator then send the result to the IF filter in a superheterodyne receiver?

Select	Answer
A	Detector
B	Balanced modulator
C	IF amplifier
D	Mixer

27. - G8A06

What is one advantage of carrier suppression in a single sideband phone transmission versus full carrier amplitude modulation?

Select	Answer
A	Audio fidelity is improved
B	Greater modulation percentage is obtainable with lower distortion
C	Available transmitter power can be used more effectively
D	Simpler receiving equipment can be used

28. - G8B04

What is the stage in a VHF FM transmitter that generates a harmonic of a lower frequency signal to reach the desired operating frequency?

Select	Answer
A	Mixer
B	Reactance modulator
C	Multiplier
D	Pre-emphasis network

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. - G9A04

What might cause reflected power at the point where a feed line connects to an antenna?

Select	Answer
A	Operating an antenna at its resonant frequency
B	Using more transmitter power than the antenna can handle
C	Feeding the antenna with unbalanced feed line
D	A difference between feed line impedance and antenna feed point impedance

31. - G9B06

Where should the radial wires of a ground-mounted vertical antenna system be placed?

Select	Answer
A	At the center of the antenna
B	On the surface of the Earth or buried a few inches below the ground
C	Parallel to the antenna element
D	As high as possible above the ground

32. - G9C18

What happens when the feed point of a quad antenna of any shape is moved from the midpoint of the top or bottom to the midpoint of either side?

Select	Answer
A	The radiated signal becomes circularly polarized
B	There is no change in polarization
C	The polarization of the radiated signal changes from horizontal to vertical
D	The polarization of the radiated signal changes from vertical to horizontal

33. - G9D02

Which of the following is an advantage of an NVIS antenna?

Select	Answer
A	High vertical angle radiation for working stations within a radius of a few hundred kilometers
B	High forward gain
C	Low vertical angle radiation for working stations out to ranges of several thousand kilometers
D	All of these choices are correct

34. - G0A06

What precaution should be taken when installing a ground-mounted antenna?

Select	Answer
A	It should limited to 10 feet in height
B	It should be installed such that it is protected against unauthorized access
C	It should not be installed higher than you can reach
D	It should not be installed in a wet area

35. - G0B08

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

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