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. - G1A08

Which of the following frequencies is within the General Class portion of the 80-meter band?

Select	Answer
A	1855 kHz
B	2560 kHz
C	3650 kHz
D	3560 kHz

2. - G1B09

When may an amateur station transmit communications in which the licensee or control operator has a pecuniary (monetary) interest?

Select	Answer
A	When other amateurs are being notified of the sale of any item with a monetary value less than $200 and such activity is not done on a regular basis
B	Never
C	Only when there is no other means of communications readily available
D	When other amateurs are being notified of the sale of apparatus normally used in an amateur station and such activity is not done on a regular basis

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

4. - G1D03

On which of the following band segments may you operate if you are a Technician Class operator and have a CSCE for General Class privileges?

Select	Answer
A	Only the Technician band segments until your upgrade is posted in the FCC database
B	On any General or Technician Class band segment except 30-meters and 60-meters
C	On any General or Technician Class band segment
D	Only on the Technician band segments until your license arrives in the mail

5. - G1E05

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

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

6. - G2A05

Which mode of voice communication is most commonly used on the HF amateur bands?

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

7. - G2B05

What is the customary minimum frequency separation between SSB signals under normal conditions?

Select	Answer
A	Approximately 10 kHz
B	Approximately 6 kHz
C	Approximately 3 kHz
D	Between 150 and 500 Hz

8. - G2C04

What does the Q signal "QRL?" mean?

Select	Answer
A	"Are you listening only for a specific station?"
B	"Are you operating full break-in" or "Can you operate full break-in?"
C	"Will you keep the frequency clear?"
D	"Are you busy?", or "Is this frequency in use?"

9. - G2D10

What is QRP operation?

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

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

11. - G3A16

What is a possible benefit to radio communications resulting from periods of high geomagnetic activity?

Select	Answer
A	Auroras that can reflect VHF signals
B	Improved HF long path propagation
C	Higher signal strength for HF signals passing through the polar regions
D	Reduced long delayed echoes

12. - G3B01

How might a sky-wave signal sound if it arrives at your receiver by both short path and long path propagation?

Select	Answer
A	A well-defined echo might be heard
B	The signal might be cancelled causing severe attenuation
C	Signal strength increased by 3 dB
D	Periodic fading approximately every 10 seconds

13. - G3C01

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

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

14. - G4A11

Which of the following is a use for the IF shift control on a receiver?

Select	Answer
A	To avoid interference from stations very close to the receive frequency
B	To change frequency rapidly
C	To tune in stations that are slightly off frequency without changing your transmit frequency
D	To permit listening on a different frequency from that on which you are transmitting

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. - G4C08

Which of the following would reduce RF interference caused by common-mode current on an audio cable?

Select	Answer
A	Placing a ferrite choke around the cable
B	Adding shunt inductors to the conductors
C	Adding an additional insulating jacket to the cable
D	Adding series capacitors to the conductors

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	7.178 to 7.181 MHz
D	7.1765 to 7.1795 MHz

18. - G4E08

What is the name of the process by which sunlight is changed directly into electricity?

Select	Answer
A	Photon emission
B	Photovoltaic conversion
C	Photon decomposition
D	Photosynthesis

19. - G5A07

What happens when the impedance of an electrical load is equal to the output impedance of a power source, assuming both impedances are resistive?

Select	Answer
A	No current can flow through the circuit
B	The electrical load is shorted
C	The source delivers minimum power to the load
D	The source can deliver maximum power to the load

20. - G5B01

What dB change represents a two-times increase or decrease in power?

Select	Answer
A	Approximately 6 dB
B	Approximately 3 dB
C	Approximately 2 dB
D	Approximately 12 dB

21. - G5C07

What is the turns ratio of a transformer used to match an audio amplifier having 600 ohm output impedance to a speaker having 4 ohm impedance?

Select	Answer
A	12.2 to 1
B	300 to 1
C	150 to 1
D	24.4 to 1

22. - G6A17

Which of the following is a reason not to use wire-wound resistors in an RF circuit?

Select	Answer
A	The resistor's tolerance value would not be adequate for such a circuit
B	The resistor could overheat
C	The resistor's inductance could make circuit performance unpredictable
D	The resistor's internal capacitance would detune the circuit

23. - G6B01

Which of the following is an analog integrated circuit?

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

24. - G7A03

What is the peak-inverse-voltage across the rectifiers in a full-wave bridge power supply?

Select	Answer
A	One-quarter the normal output voltage of the power supply
B	Half the normal output voltage of the power supply
C	Equal to the normal peak output voltage of the power supply
D	Double the normal peak output voltage of the power supply

25. - G7B13

What is the reason for neutralizing the final amplifier stage of a transmitter?

Select	Answer
A	To keep the carrier on frequency
B	To limit the modulation index
C	To eliminate self-oscillations
D	To cut off the final amplifier during standby periods

26. - G7C04

What circuit is used to combine signals from the IF amplifier and BFO and send the result to the AF amplifier in some single sideband receivers?

Select	Answer
A	IF filter
B	Balanced modulator
C	RF oscillator
D	Product detector

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 convolution
B	Radian inversion
C	Angle convolution
D	Phase modulation

28. - G8B07

What is the frequency deviation for a 12.21 MHz reactance modulated oscillator in a 5 kHz deviation, 146.52 MHz FM phone transmitter?

Select	Answer
A	416.7 Hz
B	60 kHz
C	5 kHz
D	101.75 Hz

29. - G8C08

Which of the following statements is true about PSK31?

Select	Answer
A	Upper case letters make the signal stronger
B	Higher power is needed as compared to RTTY for similar error rates
C	Upper case letters use longer Varicode signals and thus slow down transmission
D	Varicode Error Correction is used to ensure accurate message reception

30. - G9A10

What standing wave ratio will result when connecting a 50 ohm feed line to a non-reactive load having 10 ohm impedance?

Select	Answer
A	5:1
B	2:1
C	50:1
D	1:5

31. - G9B01

What is one disadvantage of a directly fed random-wire HF antenna?

Select	Answer
A	It produces only vertically polarized radiation
B	It is more effective on the lower HF bands than on the higher bands
C	It must be longer than 1 wavelength
D	You may experience RF burns when touching metal objects in your station

32. - G9C12

Which of the following is an advantage of using a gamma match for impedance matching of a Yagi antenna to 50 ohm coax feed line?

Select	Answer
A	It is useful for matching multiband antennas
B	All of these choices are correct
C	It does not require that the elements be insulated from the boom
D	It does not require any inductors or capacitors

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 quick selection of vertical or horizontal polarization
C	It allows simultaneous vertical and horizontal polarization
D	It narrows the main lobe in elevation

34. - G0A03

How can you determine that your station complies with FCC RF exposure regulations?

Select	Answer
A	By measurement of field strength using calibrated equipment
B	By calculation based on FCC OET Bulletin 65
C	All of these choices are correct
D	By calculation based on computer modeling

35. - G0B08

What should be done by any person preparing to climb a tower that supports electrically powered devices?

Select	Answer
A	All of these choices are correct
B	Unground the base of the tower
C	Make sure all circuits that supply power to the tower are locked out and tagged
D	Notify the electric company that a person will be working on the tower