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. - G1A04

Which of the following amateur bands is restricted to communication on only specific channels, rather than frequency ranges?

Select	Answer
A	12 meters
B	11 meters
C	60 meters
D	30 meters

2. - G1B05

When may music be transmitted by an amateur station?

Select	Answer
A	When it is unintentionally transmitted from the background at the transmitter
B	When it is transmitted on frequencies above 1215 MHz
C	When it is an incidental part of a manned space craft retransmission
D	At any time, as long as it produces no spurious emissions

3. - G1C06

Which of the following is a limitation on transmitter power on the 1.8 MHz band?

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

4. - G1D04

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

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

5. - G1E13

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	Only in the non-phone Extra Class segments of the bands
C	On any band segment where digital operation is permitted
D	Anywhere in the 1.25-meter or shorter wavelength bands, and in specified segments of the 80-meter through 2-meter bands

6. - G2A03

Which of the following is most commonly used for SSB voice communications in the VHF and UHF bands?

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

7. - 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	Continue your communication because you were on the frequency first
B	Immediately cease all transmissions
C	Change to a different frequency
D	Acknowledge the station in distress and determine what assistance may be needed

8. - G2C01

Which of the following describes full break-in telegraphy (QSK)?

Select	Answer
A	Transmitting stations can receive between code characters and elements
B	An operator must activate a manual send/receive switch before and after every transmission
C	Automatic keyers are used to send Morse code instead of hand keys
D	Breaking stations send the Morse code prosign BK

9. - G2D01

What is the Amateur Auxiliary to the FCC?

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

10. - G2E01

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

Select	Answer
A	LSB
B	CW
C	DSB
D	USB

11. - G3A07

At what point in the solar cycle does the 20-meter band usually support worldwide propagation during daylight hours?

Select	Answer
A	At any point in the solar cycle
B	Only at the maximum point of the solar cycle
C	At the summer solstice
D	Only at the minimum point of the solar cycle

12. - G3B05

What usually happens to radio waves with frequencies below the MUF and above the LUF when they are sent into the ionosphere?

Select	Answer
A	They are amplified by interaction with the ionosphere
B	They are bent back to the Earth
C	They pass through the ionosphere
D	They are bent and trapped in the ionosphere to circle the Earth

13. - G3C09

What type of radio wave propagation allows a signal to be detected at a distance too far for ground wave propagation but too near for normal sky-wave propagation?

Select	Answer
A	Scatter
B	Faraday rotation
C	Short-path skip
D	Sporadic-E skip

14. - G4A10

What is the purpose of an electronic keyer?

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

15. - G4B13

What is a use for an antenna analyzer other than measuring the SWR of an antenna system?

Select	Answer
A	Determining the gain of a directional antenna
B	Determining the impedance of an unknown or unmarked coaxial cable
C	Measuring the turns ratio of a power transformer
D	Measuring the front to back ratio of an antenna

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

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	7.1765 to 7.1795 MHz
B	7.178 to 7.184 MHz
C	7.175 to 7.178 MHz
D	7.178 to 7.181 MHz

18. - G4E05

Which of the following most limits the effectiveness of an HF mobile transceiver operating in the 75-meter band?

Select	Answer
A	"Picket Fencing" signal variation
B	The wire gauge of the DC power line to the transceiver
C	FCC rules limiting mobile output power on the 75-meter band
D	The antenna system

19. - G5A05

How does an inductor react to AC?

Select	Answer
A	As the amplitude of the applied AC increases, the reactance decreases
B	As the frequency of the applied AC increases, the reactance decreases
C	As the amplitude of the applied AC increases, the reactance increases
D	As the frequency of the applied AC increases, the reactance increases

20. - G5B05

How many watts are dissipated when a current of 7.0 milliamperes flows through 1.25 kilohms resistance?

Select	Answer
A	Approximately 11 milliwatts
B	Approximately 11 watts
C	Approximately 61 milliwatts
D	Approximately 61 watts

21. - G5C18

What is the value in microfarads of a 4700 nanofarad (nF) capacitor?

Select	Answer
A	0.47 microfarads
B	4.7 microfarads
C	47,000 microfarads
D	47 microfarads

22. - G6A14

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

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

23. - G6B13

Which of these connector types is commonly used for RF connections at frequencies up to 150 MHz?

Select	Answer
A	RJ-11
B	PL-259
C	DB-25
D	Octal

24. - G7A05

What portion of the AC cycle is converted to DC by a half-wave rectifier?

Select	Answer
A	360 degrees
B	90 degrees
C	180 degrees
D	270 degrees

25. - G7B03

Which of the following describes the function of a two input AND gate?

Select	Answer
A	Output is low when either or both inputs are high
B	Output is high only when both inputs are high
C	Output is low only when both inputs are high
D	Output is high when either or both inputs are low

26. - G7C10

How is Digital Signal Processor filtering accomplished?

Select	Answer
A	By converting the signal from digital to analog and taking the difference of mixing products
B	By using direct signal phasing
C	By converting the signal from analog to digital and using digital processing
D	By differential spurious phasing

27. - G8A05

What type of modulation varies the instantaneous power level of the RF signal?

Select	Answer
A	Amplitude modulation
B	Frequency modulation
C	Phase modulation
D	Frequency shift keying

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	Discriminator
C	VFO
D	Mixer

29. - G8C09

What does the number 31 represent in "PSK31"?

Select	Answer
A	The year in which PSK31 was invented
B	The approximate transmitted symbol rate
C	The number of characters that can be represented by PSK31
D	The version of the PSK protocol

30. - G9A06

In what units is RF feed line loss usually expressed?

Select	Answer
A	Ohms per 1000 feet
B	Decibels per 100 feet
C	Decibels per 1000 feet
D	Ohms per 100 feet

31. - G9B01

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

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

32. - G9C08

What is meant by the "main lobe" of a directive antenna?

Select	Answer
A	The point of maximum current in a radiating antenna element
B	The maximum voltage standing wave point on a radiating element
C	The direction of maximum radiated field strength from the antenna
D	The magnitude of the maximum vertical angle of radiation

33. - G9D04

What is the primary purpose of antenna traps?

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

34. - G0A01

What is one way that RF energy can affect human body tissue?

Select	Answer
A	It causes radiation poisoning
B	It cools body tissue
C	It heats body tissue
D	It causes the blood count to reach a dangerously low level

35. - G0B07

Which of these choices should be observed when climbing a tower using a safety belt or harness?

Select	Answer
A	All of these choices are correct
B	Confirm that the belt is rated for the weight of the climber and that it is within its allowable service life
C	Never lean back and rely on the belt alone to support your weight
D	Ensure that all heavy tools are securely fastened to the belt D-ring