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	60 meters
D	30 meters

2. - G1B08

When choosing a transmitting frequency, what should you do to comply with good amateur practice?

Select	Answer
A	Monitor the frequency before transmitting
B	Insure that the frequency and mode selected are within your license class privileges
C	Follow generally accepted band plans agreed to by the Amateur Radio community
D	All of these choices are correct

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	1000 watts PEP output
B	2000 watts PEP output
C	100 watts PEP output
D	1500 watts PEP output

4. - G1D09

How long is a Certificate of Successful Completion of Examination (CSCE) valid for exam element credit?

Select	Answer
A	180 days
B	365 days
C	30 days
D	For as long as your current license is valid

5. - G1E02

When may a 10-meter repeater retransmit the 2-meter signal from a station having a Technician Class control operator?

Select	Answer
A	Only if the station on 10-meters is operating under a Special Temporary Authorization allowing such retransmission
B	Only during an FCC declared general state of communications emergency
C	Under no circumstances
D	Only if the 10-meter repeater control operator holds at least a General Class license

6. - G2A04

Which mode is most commonly used for voice communications on the 17-meter and 12-meter bands?

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

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	QSOs in progress always have priority
C	Nets always have priority
D	Contest operations must always yield to non-contest use of frequencies

8. - G2C07

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

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

9. - G2D10

What is QRP operation?

Select	Answer
A	Transmission using Quick Response Protocol
B	Remote piloted model control
C	Traffic relay procedure net operation
D	Low power transmit operation

10. - G2E03

What symptoms may result from other signals interfering with a PACTOR or WINMOR transmission?

Select	Answer
A	Failure to establish a connection between stations
B	Frequent retries or timeouts
C	Long pauses in message transmission
D	All of these choices are correct

11. - G3A06

What is a geomagnetic storm?

Select	Answer
A	Ripples in the ionosphere
B	A thunderstorm which affects radio propagation
C	A sudden drop in the solar flux index
D	A temporary disturbance in the Earth's magnetosphere

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

13. - G3C08

Why are HF scatter signals in the skip zone usually weak?

Select	Answer
A	Propagations is through ducts in F region which absorb most of the energy
B	Signals are scattered from the magnetosphere which is not a good reflector
C	Propagation is through ground waves which absorb most of the signal energy
D	Only a small part of the signal energy is scattered into the skip zone

14. - G4A07

What condition can lead to permanent damage to a solid-state RF power amplifier?

Select	Answer
A	Low input SWR
B	Shorting the input signal to ground
C	Insufficient drive power
D	Excessive drive power

15. - G4B07

What signals are used to conduct a two-tone test?

Select	Answer
A	Two audio signals of the same frequency shifted 90 degrees
B	Two swept frequency tones
C	Two non-harmonically related audio signals
D	Two audio frequency range square wave signals of equal amplitude

16. - G4C10

What could be a symptom of a ground loop somewhere in your station?

Select	Answer
A	The SWR reading for one or more antennas is suddenly very high
B	An item of station equipment starts to draw excessive amounts of current
C	You receive reports of harmonic interference from your station
D	You receive reports of "hum" on your station's transmitted signal

17. - G4D11

How close to the upper edge of the 20-meter General Class band should your displayed carrier frequency be when using 3 kHz wide USB?

Select	Answer
A	At least 3 kHz above the edge of the band
B	Your displayed carrier frequency may be set at the edge of the band
C	At least 3 kHz below the edge of the band
D	At least 1 kHz below the edge of the segment

18. - G4E05

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

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

19. - G5A04

Which of the following causes opposition to the flow of alternating current in a capacitor?

Select	Answer
A	Reactance
B	Conductance
C	Reluctance
D	Admittance

20. - G5B12

What would be the RMS voltage across a 50 ohm dummy load dissipating 1200 watts?

Select	Answer
A	173 volts
B	692 volts
C	346 volts
D	245 volts

21. - G5C10

What is the inductance of three 10 millihenry inductors connected in parallel?

Select	Answer
A	0.30 henrys
B	3.3 millihenrys
C	3.3 henrys
D	30 millihenrys

22. - G6A14

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

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

23. - G6B06

What kind of device is an integrated circuit operational amplifier?

Select	Answer
A	Digital
B	Programmable Logic
C	Analog
D	MMIC

24. - G7A06

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

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

25. - G7B08

How is the efficiency of an RF power amplifier determined?

Select	Answer
A	Divide the RF output power by the DC input power
B	Multiply the RF input power by the reciprocal of the RF output power
C	Divide the DC input power by the DC output power
D	Add the RF input power to the DC output power

26. - G7C11

What is meant by the term "software defined radio" (SDR)?

Select	Answer
A	A computer model that can simulate performance of a radio to aid in the design process
B	A radio that uses crystal filters designed using software
C	A radio that provides computer interface for automatic logging of band and frequency
D	A radio in which most major signal processing functions are performed by software

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 modulation
B	Angle convolution
C	Radian inversion
D	Phase convolution

28. - G8B10

What is the relationship between transmitted symbol rate and bandwidth?

Select	Answer
A	Bandwidth is always half the symbol rate
B	Lower symbol rates require wider bandwidth
C	Symbol rate and bandwidth are not related
D	Higher symbol rates require wider bandwidth

29. - G8C12

Which type of code is used for sending characters in a PSK31 signal?

Select	Answer
A	Viterbi
B	Volumetric
C	Binary
D	Varicode

30. - G9A01

Which of the following factors determine the characteristic impedance of a parallel conductor antenna feed line?

Select	Answer
A	The radius of the conductors and the frequency of the signal
B	The distance between the centers of the conductors and the length of the line
C	The distance between the centers of the conductors and the radius of the conductors
D	The frequency of the signal and the length of the line

31. - G9B11

What is the approximate length for a 1/2 wave dipole antenna cut for 3.550 MHz?

Select	Answer
A	42 feet
B	84 feet
C	131 feet
D	263 feet

32. - G9C11

What is the purpose of a gamma match used with Yagi antennas?

Select	Answer
A	To increase the main lobe gain
B	To increase the front-to-back ratio
C	To match the relatively low feed point impedance to 50 ohms
D	To match the relatively high feed point impedance to 50 ohms

33. - G9D06

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

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

34. - G0A02

Which of the following properties is important in estimating whether an RF signal exceeds the maximum permissible exposure (MPE)?

Select	Answer
A	Its power density
B	Its duty cycle
C	All of these choices are correct
D	Its frequency

35. - G0B05

Which of the following conditions will cause a Ground Fault Circuit Interrupter (GFCI) to disconnect the 120 or 240 Volt AC line power to a device?

Select	Answer
A	All of these choices are correct
B	Current flowing from one or more of the voltage-carrying wires to the neutral wire
C	Current flowing from one or more of the voltage-carrying wires directly to ground
D	Overvoltage on the voltage-carrying wires