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. - G1A05

Which of the following frequencies is in the General Class portion of the 40-meter band?

Select	Answer
A	7.250 MHz
B	40.200 MHz
C	7.500 MHz
D	40.500 MHz

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 "10 codes" are permitted
D	Only "Q" signals are permitted

3. - G1C02

What is the maximum transmitting power an amateur station may use on the 12-meter band?

Select	Answer
A	1500 watts PEP output
B	An effective radiated power equivalent to 100 watts from a half-wave dipole
C	200 watts PEP output
D	50 watts PEP output

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

5. - G1E12

Under what circumstances are messages that are sent via digital modes exempt from Part 97 third party rules that apply to other modes of communication?

Select	Answer
A	Under no circumstances
B	When messages are not encrypted
C	When messages are encrypted
D	When under automatic control

6. - G2A11

What does the expression "CQ DX" usually indicate?

Select	Answer
A	The caller is listening for a station in Germany
B	The caller is looking for any station outside their own country
C	A general call for any station
D	A distress call

7. - G2B01

Which of the following is true concerning access to frequencies in non-emergency situations?

Select	Answer
A	Except during FCC declared emergencies, no one has priority access to frequencies
B	Nets always have priority
C	QSOs in progress always have priority
D	Contest operations must always yield to non-contest use of frequencies

8. - G2C06

What does the term "zero beat" mean in CW operation?

Select	Answer
A	Matching your transmit frequency to the frequency of a received signal
B	Operating split to avoid interference on frequency
C	Sending without error
D	Matching the speed of the transmitting station

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. - G2E05

What is the standard sideband used to generate a JT65 or JT9 digital signal when using AFSK in any amateur band?

Select	Answer
A	DSB
B	LSB
C	SSB
D	USB

11. - G3A04

Which of the following are least reliable for long distance communications during periods of low solar activity?

Select	Answer
A	80 meters and 160 meters
B	30 meters and 20 meters
C	15 meters, 12 meters and 10 meters
D	60 meters and 40 meters

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

13. - G3C06

What is a characteristic of HF scatter signals?

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

14. - G4A01

What is the purpose of the "notch filter" found on many HF transceivers?

Select	Answer
A	To eliminate receiver interference from impulse noise sources
B	To reduce interference from carriers in the receiver passband
C	To enhance the reception of a specific frequency on a crowded band
D	To restrict the transmitter voice bandwidth

15. - G4B12

What problem can occur when making measurements on an antenna system with an antenna analyzer?

Select	Answer
A	Permanent damage to the analyzer may occur if it is operated into a high SWR
B	Connecting the analyzer to an antenna can cause it to absorb harmonics
C	Strong signals from nearby transmitters can affect the accuracy of measurements
D	The analyzer can be damaged if measurements outside the ham bands are attempted

16. - G4C13

Which of the following can perform automatic notching of interfering carriers?

Select	Answer
A	A noise limiter
B	A Digital Signal Processor (DSP) filter
C	Bandpass tuning
D	Balanced mixing

17. - G4D04

What does an S meter measure?

Select	Answer
A	Transmitter power output
B	Received signal strength
C	Conductance
D	Impedance

18. - G4E07

Which of the following may cause interference to be heard in the receiver of an HF radio installed in a recent model vehicle?

Select	Answer
A	The battery charging system
B	The vehicle control computer
C	The fuel delivery system
D	All of these choices are correct

19. - G5A08

Why is impedance matching important?

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

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	60 watts
C	24 watts
D	2.4 watts

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	2370 volts
D	540 volts

22. - G6A11

Which of the following solid state devices is most like a vacuum tube in its general operating characteristics?

Select	Answer
A	A tunnel diode
B	A bipolar transistor
C	A field effect transistor
D	A varistor

23. - G6B06

What kind of device is an integrated circuit operational amplifier?

Select	Answer
A	Programmable Logic
B	Digital
C	Analog
D	MMIC

24. - G7A05

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

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

25. - G7B12

Which of these classes of amplifiers has the highest efficiency?

Select	Answer
A	Class AB
B	Class B
C	Class C
D	Class A

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	Balanced modulator
D	Product detector

27. - G8A02

What is the name of the process that changes the phase angle of an RF wave to convey information?

Select	Answer
A	Phase convolution
B	Radian inversion
C	Angle convolution
D	Phase modulation

28. - G8B05

What is the approximate bandwidth of a PACTOR3 signal at maximum data rate?

Select	Answer
A	1800 Hz
B	2300 Hz
C	31.5 Hz
D	500 Hz

29. - G8C02

How many data bits are sent in a single PSK31 character?

Select	Answer
A	The number varies
B	7
C	8
D	5

30. - G9A05

How does the attenuation of coaxial cable change as the frequency of the signal it is carrying increases?

Select	Answer
A	Attenuation increases
B	Attenuation reaches a maximum at approximately 18 MHz
C	Attenuation decreases
D	Attenuation is independent of frequency

31. - G9B03

What happens to the feed point impedance of a ground plane antenna when its radials are changed from horizontal to sloping downward?

Select	Answer
A	It decreases
B	It stays the same
C	It reaches a maximum at an angle of 45 degrees
D	It increases

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

33. - G9D04

What is the primary purpose of antenna traps?

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

34. - G0A05

What must you do if an evaluation of your station shows RF energy radiated from your station exceeds permissible limits?

Select	Answer
A	File an Environmental Impact Statement (EIS-97) with the FCC
B	Secure written permission from your neighbors to operate above the controlled MPE limits
C	All of these choices are correct
D	Take action to prevent human exposure to the excessive RF fields

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