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. - G1A02

On which of the following bands is phone operation prohibited?

Select	Answer
A	30 meters
B	17 meters
C	12 meters
D	160 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	In conformance with Amateur Radio custom
B	In conformance with the rules of the IARU
C	All of these choices are correct
D	In conformance with good engineering and good amateur practice

3. - G1C03

What is the maximum bandwidth permitted by FCC rules for Amateur Radio stations transmitting on USB frequencies in the 60-meter band?

Select	Answer
A	5.6 kHz
B	2.8 kHz
C	3 kHz
D	1.8 kHz

4. - G1D07

Volunteer Examiners are accredited by what organization?

Select	Answer
A	The Federal Communications Commission
B	The Universal Licensing System
C	A Volunteer Examiner Coordinator
D	The Wireless Telecommunications Bureau

5. - G1E05

What types of messages for a third party in another country may be transmitted by an amateur station?

Select	Answer
A	Any message, as long as the amateur operator is not paid
B	Only messages for other licensed amateurs
C	Only messages relating to Amateur Radio or remarks of a personal character, or messages relating to emergencies or disaster relief
D	Any messages, as long as the text of the message is recorded in the station log

6. - G2A03

Which of the following is most commonly used for SSB voice communications in the VHF and UHF bands?

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

7. - G2B03

If propagation changes during your contact and you notice increasing interference from other activity on the same frequency, what should you do?

Select	Answer
A	As a common courtesy, move your contact to another frequency
B	Tell the interfering stations to change frequency
C	Increase power to overcome interference
D	Report the interference to your local Amateur Auxiliary Coordinator

8. - G2C09

What does the Q signal "QSL" mean?

Select	Answer
A	Send slower
B	We have already confirmed by card
C	I acknowledge receipt
D	We have worked before

9. - G2D02

Which of the following are objectives of the Amateur Auxiliary?

Select	Answer
A	To coordinate repeaters for efficient and orderly spectrum usage
B	To conduct efficient and orderly amateur licensing examinations
C	To provide emergency and public safety communications
D	To encourage self-regulation and compliance with the rules by radio amateur operators

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

11. - G3A13

What does the A-index indicate?

Select	Answer
A	The relative position of sunspots on the surface of the Sun
B	The long term stability of the Earth's geomagnetic field
C	The solar radio flux at Boulder, Colorado
D	The amount of polarization of the Sun's electric field

12. - G3B06

What usually happens to radio waves with frequencies below the LUF?

Select	Answer
A	They are bent and trapped in the ionosphere to circle the Earth
B	They pass through the ionosphere
C	They are completely absorbed by the ionosphere
D	They are bent back to the Earth

13. - G3C10

Which of the following might be an indication that signals heard on the HF bands are being received via scatter propagation?

Select	Answer
A	The communication is during a sudden ionospheric disturbance
B	The communication is during a sunspot maximum
C	The signal is heard on a frequency above the Maximum Usable Frequency
D	The signal is heard on a frequency below the Maximum Usable Frequency

14. - G4A07

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

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

15. - G4B05

Why is high input impedance desirable for a voltmeter?

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

16. - G4C12

Which of the following is an advantage of a receiver DSP IF filter as compared to an analog filter?

Select	Answer
A	A wide range of filter bandwidths and shapes can be created
B	Mixing products are greatly reduced
C	Fewer digital components are required
D	The DSP filter is much more effective at VHF frequencies

17. - G4D02

Which of the following describes how a speech processor affects a transmitted single sideband phone signal?

Select	Answer
A	It reduces intermodulation distortion
B	It reduces harmonic distortion
C	It increases average power
D	It increases peak power

18. - G4E01

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

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

19. - G5A03

Which of the following causes opposition to the flow of alternating current in an inductor?

Select	Answer
A	Reactance
B	Admittance
C	Conductance
D	Reluctance

20. - G5B04

How many watts of electrical power are used by a 12 VDC light bulb that draws 0.2 amperes?

Select	Answer
A	2.4 watts
B	24 watts
C	60 watts
D	6 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	26.7 volts
B	540 volts
C	5.9 volts
D	2370 volts

22. - G6A19

How should the winding axes of two solenoid inductors be oriented to minimize their mutual inductance?

Select	Answer
A	Interleaved
B	Parallel to each other
C	At right angles to each other
D	In line

23. - G6B08

How is an LED biased when emitting light?

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

24. - G7A13

Which symbol in Figure G7-1 represents a tapped inductor?

Select	Answer
A	Symbol 6
B	Symbol 11
C	Symbol 1
D	Symbol 7

25. - G7B14

Which of the following describes a linear amplifier?

Select	Answer
A	A Class C high efficiency amplifier
B	An amplifier in which the output preserves the input waveform
C	Any RF power amplifier used in conjunction with an amateur transceiver
D	An amplifier used as a frequency multiplier

26. - G7C11

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

Select	Answer
A	A radio that uses crystal filters designed using software
B	A computer model that can simulate performance of a radio to aid in the design process
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. - 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	Intermediate interference
B	Quadrature noise
C	Image response
D	Mixer interference

29. - G8C12

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

Select	Answer
A	Binary
B	Varicode
C	Viterbi
D	Volumetric

30. - G9A04

What might cause reflected power at the point where a feed line connects to an antenna?

Select	Answer
A	Using more transmitter power than the antenna can handle
B	Feeding the antenna with unbalanced feed line
C	A difference between feed line impedance and antenna feed point impedance
D	Operating an antenna at its resonant frequency

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

32. - G9C17

Approximately how long is each leg of a symmetrical delta-loop antenna?

Select	Answer
A	1/4 wavelength
B	1/2 wavelength
C	2/3 wavelength
D	1/3 wavelength

33. - G9D05

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

Select	Answer
A	It narrows the main lobe in elevation
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 azimuth

34. - G0A04

What does "time averaging" mean in reference to RF radiation exposure?

Select	Answer
A	The average time it takes RF radiation to have any long-term effect on the body
B	The total RF exposure averaged over a certain time
C	The average amount of power developed by the transmitter over a specific 24 hour period
D	The total time of the exposure

35. - G0B01

Which wire or wires in a four-conductor connection should be attached to fuses or circuit breakers in a device operated from a 240 VAC single phase source?

Select	Answer
A	All wires
B	Only the ground wire
C	Only the neutral wire
D	Only the two wires carrying voltage

Figure G7-1