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	40.500 MHz
B	7.500 MHz
C	40.200 MHz
D	7.250 MHz

2. - G1B03

Which of the following is a purpose of a beacon station as identified in the FCC rules?

Select	Answer
A	Transmission of bulletins of general interest to Amateur Radio licensees
B	Identifying net frequencies
C	Automatic identification of repeaters
D	Observation of propagation and reception

3. - G1C06

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

Select	Answer
A	1200 watts PEP output
B	1000 watts PEP output
C	200 watts PEP output
D	1500 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	Extra, General and Technician
B	Technician only
C	General only
D	General and Technician

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

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	Lower sideband
C	Vestigial sideband
D	Double sideband

7. - G2B06

What is a practical way to avoid harmful interference on an apparently clear frequency before calling CQ on CW or phone?

Select	Answer
A	Send "QSY" on CW or if using phone, announce "the frequency is in use", then give your call and listen for a response
B	Listen for 2 minutes before calling CQ
C	Send "QRL?" on CW, followed by your call sign; or, if using phone, ask if the frequency is in use, followed by your call sign
D	Send the letter "V" in Morse code several times and listen for a response or say "test" several times and listen for a response

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	Breaking stations send the Morse code prosign BK
D	Automatic keyers are used to send Morse code instead of hand keys

9. - G2D10

What is QRP operation?

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

10. - G2E08

In what segment of the 20-meter band are most PSK31 operations commonly found?

Select	Answer
A	At the top of the SSB phone segment, near 14.325 MHz
B	Below the RTTY segment, near 14.070 MHz
C	In the middle of the CW segment, near 14.100 MHz
D	At the bottom of the slow-scan TV segment, near 14.230 MHz

11. - G3A11

Approximately how long is the typical sunspot cycle?

Select	Answer
A	28 days
B	11 years
C	40 hours
D	8 minutes

12. - G3B12

What factor or factors affect the MUF?

Select	Answer
A	Time of day and season
B	All of these choices are correct
C	Path distance and location
D	Solar radiation and ionospheric disturbances

13. - G3C01

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

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

14. - G4A14

What is likely to happen if a transceiver's ALC system is not set properly when transmitting AFSK signals with the radio using single sideband mode?

Select	Answer
A	When using digital modes, too much ALC activity can cause the transmitter to overheat
B	Improper action of ALC distorts the signal and can cause spurious emissions
C	All of these choices are correct
D	ALC will invert the modulation of the AFSK mode

15. - G4B15

What type of transmitter performance does a two-tone test analyze?

Select	Answer
A	Percentage of frequency modulation
B	Linearity
C	Percentage of suppression of carrier and undesired sideband for SSB
D	Percentage of carrier phase shift

16. - G4C09

How can a ground loop be avoided?

Select	Answer
A	Connect all ground conductors to a single point
B	Connect the AC neutral conductor to the ground wire
C	Avoid using lock washers and star washers when making ground connections
D	Connect all ground conductors in series

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

18. - G4E01

What is the purpose of a capacitance hat on a mobile antenna?

Select	Answer
A	To allow automatic band changing
B	To allow remote tuning
C	To increase the power handling capacity of a whip antenna
D	To electrically lengthen a physically short antenna

19. - G5A10

What unit is used to measure impedance?

Select	Answer
A	Volt
B	Ohm
C	Ampere
D	Watt

20. - G5B13

What is the output PEP of an unmodulated carrier if an average reading wattmeter connected to the transmitter output indicates 1060 watts?

Select	Answer
A	1500 watts
B	1060 watts
C	530 watts
D	2120 watts

21. - G5C02

What happens if you reverse the primary and secondary windings of a 4:1 voltage step down transformer?

Select	Answer
A	The transformer no longer functions as it is a unidirectional device
B	Additional resistance must be added in parallel with the secondary to prevent overload
C	The secondary voltage becomes 4 times the primary voltage
D	Additional resistance must be added in series with the primary to prevent overload

22. - G6A12

What is the primary purpose of a screen grid in a vacuum tube?

Select	Answer
A	To reduce grid-to-plate capacitance
B	To increase the control grid resistance
C	To increase efficiency
D	To decrease plate resistance

23. - G6B01

Which of the following is an analog integrated circuit?

Select	Answer
A	Linear voltage regulator
B	NAND Gate
C	Frequency Counter
D	Microprocessor

24. - G7A09

Which symbol in figure G7-1 represents a field effect transistor?

Select	Answer
A	Symbol 2
B	Symbol 5
C	Symbol 4
D	Symbol 1

25. - G7B07

What are the basic components of virtually all sine wave oscillators?

Select	Answer
A	A frequency multiplier and a mixer
B	A filter and an amplifier operating in a feedback loop
C	A circulator and a filter operating in a feed-forward loop
D	An amplifier and a divider

26. - G7C11

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

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

27. - G8A10

What is meant by the term flat-topping when referring to a single sideband phone transmission?

Select	Answer
A	Signal distortion caused by insufficient collector current
B	The transmitter's carrier is properly suppressed
C	The transmitter's automatic level control (ALC) is properly adjusted
D	Signal distortion caused by excessive drive

28. - G8B04

What is the stage in a VHF FM transmitter that generates a harmonic of a lower frequency signal to reach the desired operating frequency?

Select	Answer
A	Reactance modulator
B	Pre-emphasis network
C	Mixer
D	Multiplier

29. - G8C12

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

Select	Answer
A	Volumetric
B	Binary
C	Viterbi
D	Varicode

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	5 to 1
C	1 to 1
D	Between 1 to 1 and 5 to 1 depending on the reflected power at the transmitter

31. - G9B10

What is the approximate length for a 1/2 wave dipole antenna cut for 14.250 MHz?

Select	Answer
A	32 feet
B	24 feet
C	8 feet
D	16 feet

32. - G9C06

What configuration of the loops of a two-element quad antenna must be used for the antenna to operate as a beam antenna, assuming one of the elements is used as a reflector?

Select	Answer
A	The reflector element must be approximately 5 percent shorter than the driven element
B	The reflector element must be approximately 5 percent longer than the driven element
C	The driven element must be fed with a balun transformer
D	There must be an open circuit in the driven element at the point opposite the feed point

33. - G9D05

What is an advantage of vertical stacking of horizontally polarized Yagi antennas?

Select	Answer
A	It narrows the main lobe in azimuth
B	It allows simultaneous vertical and horizontal polarization
C	It allows quick selection of vertical or horizontal polarization
D	It narrows the main lobe in elevation

34. - G0A08

Which of the following steps must an amateur operator take to ensure compliance with RF safety regulations when transmitter power exceeds levels specified in FCC Part 97.13?

Select	Answer
A	All of these choices are correct
B	Post a copy of OET Bulletin 65 in the station
C	Post a copy of FCC Part 97.13 in the station
D	Perform a routine RF exposure evaluation

35. - G0B06

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

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

Figure G7-1