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	30 meters
B	60 meters
C	11 meters
D	12 meters

2. - G1B10

What is the power limit for beacon stations?

Select	Answer
A	100 watts PEP output
B	10 watts PEP output
C	200 watts PEP output
D	20 watts PEP output

3. - G1C10

What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 10-meter band?

Select	Answer
A	300 baud
B	19.6 kilobaud
C	56 kilobaud
D	1200 baud

4. - G1D05

Which of the following must a person have before they can be an administering VE for a Technician Class license examination?

Select	Answer
A	Receipt of a CSCE for General Class
B	An FCC General Class or higher license and VEC accreditation
C	Possession of a properly obtained telegraphy license
D	Notification to the FCC that you want to give an examination

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 encrypted
C	When under automatic control
D	When messages are not encrypted

6. - G2A04

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

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

7. - G2B04

When selecting a CW transmitting frequency, what minimum separation should be used to minimize interference to stations on adjacent frequencies?

Select	Answer
A	5 to 50 Hz
B	1 to 3 kHz
C	3 to 6 kHz
D	150 to 500 Hz

8. - G2C11

What does the Q signal "QRV" mean?

Select	Answer
A	You are sending too fast
B	I am ready to receive messages
C	There is interference on the frequency
D	I am quitting for the day

9. - G2D01

What is the Amateur Auxiliary to the FCC?

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

10. - G2E10

Which of the following is a way to establish contact with a digital messaging system gateway station?

Select	Answer
A	Send an email to the system control operator
B	Send QRL in Morse code
C	Transmit a connect message on the station's published frequency
D	Respond when the station broadcasts its SSID

11. - G3A01

What is the significance of the sunspot number with regard to HF propagation?

Select	Answer
A	A zero sunspot number indicate radio propagation is not possible on any band
B	Lower sunspot numbers generally indicate greater probability of sporadic E propagation
C	Higher sunspot numbers generally indicate a greater probability of good propagation at higher frequencies
D	All of these choices are correct.

12. - G3B09

What is the approximate maximum distance along the Earth's surface that is normally covered in one hop using the F2 region?

Select	Answer
A	180 miles
B	2,500 miles
C	1,200 miles
D	12,000 miles

13. - G3C02

Where on the Earth do ionospheric layers reach their maximum height?

Select	Answer
A	Where the Sun has just set
B	Where the Sun is overhead
C	Where the Sun is on the opposite side of the Earth
D	Where the Sun is rising

14. - G4A02

What is one advantage of selecting the opposite or "reverse" sideband when receiving CW signals on a typical HF transceiver?

Select	Answer
A	More stations can be accommodated within a given signal passband
B	It may be possible to reduce or eliminate interference from other signals
C	Interference from impulse noise will be eliminated
D	Accidental out of band operation can be prevented

15. - G4B05

Why is high input impedance desirable for a voltmeter?

Select	Answer
A	It improves the frequency response
B	It improves the resolution of the readings
C	It decreases the loading on circuits being measured
D	It decreases battery consumption in the meter

16. - G4C02

Which of the following could be a cause of interference covering a wide range of frequencies?

Select	Answer
A	Lack of rectification of the transmitter's signal in power conductors
B	Not using a balun or line isolator to feed balanced antennas
C	Arcing at a poor electrical connection
D	Using a balun to feed an unbalanced antenna

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

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

19. - G5A09

What unit is used to measure reactance?

Select	Answer
A	Siemens
B	Farad
C	Ampere
D	Ohm

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	20.5 percent
D	10.9 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	576.9 nanofarads
C	1733 picofarads
D	3583 picofarads

22. - G6A09

Which of the following describes the construction of a MOSFET?

Select	Answer
A	The source is formed by depositing metal on silicon
B	The gate is formed by a back-biased junction
C	The gate is separated from the channel with a thin insulating layer
D	The source is separated from the drain by a thin insulating layer

23. - G6B18

What is a type SMA connector?

Select	Answer
A	A type of push-on connector intended for high voltage applications
B	A connector designed for serial multiple access signals
C	A large bayonet connector usable at power levels in excess of 1 KW
D	A small threaded connector suitable for signals up to several GHz

24. - G7A07

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

Select	Answer
A	A sine wave at half the frequency of the AC input
B	A series of DC pulses at twice the frequency of the AC input
C	A series of DC pulses at the same frequency as the AC input
D	A steady DC voltage

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 low only when both inputs are high
C	Output is high only when both inputs are high
D	Output is high when either or both inputs are low

26. - G7C11

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

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

27. - G8A07

Which of the following phone emissions uses the narrowest bandwidth?

Select	Answer
A	Single sideband
B	Frequency modulation
C	Double sideband
D	Phase modulation

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	Mixer interference
B	Intermediate interference
C	Quadrature noise
D	Image response

29. - G8C01

Which of the following digital modes is designed to operate at extremely low signal strength on the HF bands?

Select	Answer
A	RTTY
B	FSK441 and Hellschreiber
C	JT9 and JT65
D	Clover

30. - G9A09

What standing wave ratio will result when connecting a 50 ohm feed line to a non-reactive load having 200 ohm impedance?

Select	Answer
A	1:4
B	1:2
C	4:1
D	2:1

31. - G9B02

Which of the following is a common way to adjust the feed point impedance of a quarter wave ground plane vertical antenna to be approximately 50 ohms?

Select	Answer
A	Slope the radials downward
B	Lengthen the radials
C	Slope the radials upward
D	Shorten the radials

32. - G9C04

Which statement about a three-element, single-band Yagi antenna is true?

Select	Answer
A	The reflector is normally the longest element
B	The director is normally the longest element
C	The reflector is normally the shortest element
D	All of the elements must be the same length

33. - G9D11

Which of the following is a disadvantage of multiband antennas?

Select	Answer
A	They must be used with an antenna tuner
B	They have poor harmonic rejection
C	They must be fed with open wire line
D	They present low impedance on all design frequencies

34. - G0A07

What effect does transmitter duty cycle have when evaluating RF exposure?

Select	Answer
A	A higher transmitter duty cycle permits greater short-term exposure levels
B	A lower transmitter duty cycle permits greater short-term exposure levels
C	Low duty cycle transmitters are exempt from RF exposure evaluation requirements
D	High duty cycle transmitters are exempt from RF exposure requirements

35. - G0B06

Why must the metal enclosure of every item of station equipment be grounded?

Select	Answer
A	It ensures that the neutral wire is grounded
B	It ensures that hazardous voltages cannot appear on the chassis
C	It prevents a blown fuse in the event of an internal short circuit
D	It prevents signal overload