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	11 meters
B	12 meters
C	30 meters
D	60 meters

2. - G1B11

How does the FCC require an amateur station to be operated in all respects not specifically covered by the Part 97 rules?

Select	Answer
A	All of these choices are correct
B	In conformance with good engineering and good amateur practice
C	In conformance with Amateur Radio custom
D	In conformance with the rules of the IARU

3. - G1C05

Which of the following is a limitation on transmitter power on the 28 MHz band for a General Class control operator?

Select	Answer
A	2000 watts PEP output
B	1500 watts PEP output
C	100 watts PEP output
D	1000 watts PEP output

4. - G1D02

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

Select	Answer
A	Technician only
B	General only
C	Extra, General and Technician
D	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	Locally controlled station
B	Robotically controlled station
C	Automatically controlled digital station
D	Fail-safe digital station

6. - G2A07

Which of the following statements is true of the single sideband voice mode?

Select	Answer
A	SSB is the only voice mode that is authorized on the 160-meter, 75-meter and 40-meter amateur bands
B	Only one sideband and the carrier are transmitted; the other sideband is suppressed
C	SSB is the only voice mode that is authorized on the 20-meter, 15-meter, and 10-meter amateur bands
D	Only one sideband is transmitted; the other sideband and carrier are suppressed

7. - G2B07

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

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

8. - G2C07

When sending CW, what does a "C" mean when added to the RST report?

Select	Answer
A	100 percent copy
B	Key clicks
C	Chirpy or unstable signal
D	Report was read from an S meter rather than estimated

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	Identification of out of band operation
C	Direction finding used to locate stations violating FCC Rules
D	Identification of different call signs

10. - G2E02

How can a PACTOR modem or controller be used to determine if the channel is in use by other PACTOR stations?

Select	Answer
A	Unplug the data connector temporarily and see if the channel-busy indication is turned off
B	Send the message: "Is this frequency in use?"
C	Put the modem or controller in a mode which allows monitoring communications without a connection
D	Transmit UI packets several times and wait to see if there is a response from another PACTOR station

11. - G3A15

How long does it take charged particles from coronal mass ejections to affect radio propagation on the Earth?

Select	Answer
A	20 to 40 hours
B	14 days
C	4 to 8 minutes
D	28 days

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

13. - G3C01

Which ionospheric layer is closest to the surface of the Earth?

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

14. - G4A15

Which of the following can be a symptom of transmitted RF being picked up by an audio cable carrying AFSK data signals between a computer and a transceiver?

Select	Answer
A	The transmitter signal is distorted
B	The VOX circuit does not un-key the transmitter
C	Frequent connection timeouts
D	All of these choices are correct

15. - G4B14

What is an instance in which the use of an instrument with analog readout may be preferred over an instrument with a digital readout?

Select	Answer
A	When testing logic circuits
B	When measuring the frequency of an oscillator
C	When adjusting tuned circuits
D	When high precision is desired

16. - G4C13

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

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

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. - 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	All of these choices are correct
B	The battery charging system
C	The fuel delivery system
D	The vehicle control computer

19. - G5A10

What unit is used to measure impedance?

Select	Answer
A	Volt
B	Watt
C	Ampere
D	Ohm

20. - G5B09

What is the RMS voltage of a sine wave with a value of 17 volts peak?

Select	Answer
A	24 volts
B	34 volts
C	8.5 volts
D	12 volts

21. - G5C11

What is the inductance of a 20 millihenry inductor connected in series with a 50 millihenry inductor?

Select	Answer
A	1000 millihenrys
B	0.07 millihenrys
C	14.3 millihenrys
D	70 millihenrys

22. - G6A08

Why must the cases of some large power transistors be insulated from ground?

Select	Answer
A	To increase the beta of the transistor
B	To avoid shorting the collector or drain voltage to ground
C	To reduce stray capacitance
D	To improve the power dissipation capability

23. - G6B08

How is an LED biased when emitting light?

Select	Answer
A	Beyond cutoff
B	Forward Biased
C	At the Zener voltage
D	Reverse Biased

24. - G7A07

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

Select	Answer
A	A series of DC pulses at the same frequency as the AC input
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 steady DC voltage

25. - G7B05

How many states does a 3-bit binary counter have?

Select	Answer
A	16
B	6
C	8
D	3

26. - G7C09

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

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

27. - G8A06

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

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

28. - G8B02

If a receiver mixes a 13.800 MHz VFO with a 14.255 MHz received signal to produce a 455 kHz intermediate frequency (IF) signal, what type of interference will a 13.345 MHz signal produce in the receiver?

Select	Answer
A	Image response
B	Mixer interference
C	Quadrature noise
D	Intermediate interference

29. - G8C03

What part of a data packet contains the routing and handling information?

Select	Answer
A	Directory
B	Header
C	Footer
D	Preamble

30. - G9A08

If the SWR on an antenna feed line is 5 to 1, and a matching network at the transmitter end of the feed line is adjusted to 1 to 1 SWR, what is the resulting SWR on the feed line?

Select	Answer
A	Between 1 to 1 and 5 to 1 depending on the characteristic impedance of the line
B	1 to 1
C	Between 1 to 1 and 5 to 1 depending on the reflected power at the transmitter
D	5 to 1

31. - G9B08

How does the feed point impedance of a 1/2 wave dipole change as the feed point is moved from the center toward the ends?

Select	Answer
A	It steadily decreases
B	It steadily increases
C	It is unaffected by the location of the feed point
D	It peaks at about 1/8 wavelength from the end

32. - G9C10

Which of the following is a Yagi antenna design variable that could be adjusted to optimize forward gain, front-to-back ratio, or SWR bandwidth?

Select	Answer
A	All of these choices are correct
B	The number of elements on the boom
C	The spacing of each element along the boom
D	The physical length of the boom

33. - G9D06

Which of the following is an advantage of a log periodic antenna?

Select	Answer
A	Harmonic suppression
B	Polarization diversity
C	Higher gain per element than a Yagi antenna
D	Wide bandwidth

34. - G0A06

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

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

35. - G0B15

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

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