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	3560 kHz
C	2560 kHz
D	3650 kHz

2. - G1B04

Which of the following must be true before amateur stations may provide communications to broadcasters for dissemination to the public?

Select	Answer
A	The communications must be approved by a local emergency preparedness official and conducted on officially designated frequencies
B	All of these choices are correct
C	The communications must directly relate to the immediate safety of human life or protection of property and there must be no other means of communication reasonably available before or at the time of the event
D	The FCC must have declared a state of emergency

3. - G1C10

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

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

4. - G1D08

Which of the following criteria must be met for a non-U.S. citizen to be an accredited Volunteer Examiner?

Select	Answer
A	The person must be a resident of the U.S. for a minimum of 5 years
B	The person's home citizenship must be in ITU region 2
C	None of these choices is correct; a non-U.S. citizen cannot be a Volunteer Examiner
D	The person must hold an FCC granted Amateur Radio license of General Class or above

5. - G1E04

Which of the following conditions require a licensed Amateur Radio operator to take specific steps to avoid harmful interference to other users or facilities?

Select	Answer
A	When using a band where the Amateur Service is secondary
B	All of these choices are correct
C	When a station is transmitting spread spectrum emissions
D	When operating within one mile of an FCC Monitoring Station

6. - G2A06

Which of the following is an advantage when using single sideband as compared to other analog voice modes on the HF amateur bands?

Select	Answer
A	Less subject to interference from atmospheric static crashes
B	Less bandwidth used and greater power efficiency
C	Ease of tuning on receive and immunity to impulse noise
D	Very high fidelity voice modulation

7. - G2B05

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

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

8. - G2C06

What does the term "zero beat" mean in CW operation?

Select	Answer
A	Matching your transmit frequency to the frequency of a received signal
B	Operating split to avoid interference on frequency
C	Sending without error
D	Matching the speed of the transmitting station

9. - G2D07

Which of the following is required by the FCC rules when operating in the 60-meter band?

Select	Answer
A	If you are using other than a dipole antenna, you must keep a record of the gain of your antenna
B	You must keep a record of the manufacturer of your equipment and the antenna used
C	You must keep a record of all third party traffic
D	You must keep a record of the date, time, frequency, power level and stations worked

10. - G2E01

Which mode is normally used when sending an RTTY signal via AFSK with an SSB transmitter?

Select	Answer
A	CW
B	USB
C	LSB
D	DSB

11. - G3A13

What does the A-index indicate?

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

12. - G3B04

What is a reliable way to determine if the MUF is high enough to support skip propagation between your station and a distant location on frequencies between 14 and 30 MHz?

Select	Answer
A	Send a series of dots on the band and listen for echoes from your signal
B	Check the strength of signals in the MF AM broadcast band
C	Listen for signals from an international beacon in the frequency range you plan to use
D	Check the strength of TV signals from Western Europe

13. - G3C03

Why is the F2 region mainly responsible for the longest distance radio wave propagation?

Select	Answer
A	All of these choices are correct
B	Because it is the highest ionospheric region
C	Because it does not absorb radio waves as much as other ionospheric regions
D	Because it is the densest ionospheric layer

14. - G4A03

What is normally meant by operating a transceiver in "split" mode?

Select	Answer
A	The radio is operating at half power
B	The transceiver is operating from an external power source
C	The transmitter is emitting an SSB signal, as opposed to DSB operation
D	The transceiver is set to different transmit and receive frequencies

15. - G4B06

What is an advantage of a digital voltmeter as compared to an analog voltmeter?

Select	Answer
A	Better for measuring computer circuits
B	Faster response
C	Better for RF measurements
D	Better precision for most uses

16. - G4C08

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

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

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

18. - G4E02

What is the purpose of a corona ball on a HF mobile antenna?

Select	Answer
A	To reduce the chance of damage if the antenna should strike an object
B	To narrow the operating bandwidth of the antenna
C	To reduce high voltage discharge from the tip of the antenna
D	To increase the "Q" of the antenna

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 can deliver maximum power to the load
D	The source delivers minimum power to the load

20. - G5B01

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

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

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	540 volts
B	2370 volts
C	26.7 volts
D	5.9 volts

22. - G6A15

Which of the following is an advantage of an electrolytic capacitor?

Select	Answer
A	Much less leakage than any other type
B	Inexpensive RF capacitor
C	High capacitance for a given volume
D	Tight tolerance

23. - G6B01

Which of the following is an analog integrated circuit?

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

24. - G7A05

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

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

25. - G7B04

Which of the following describes the function of a two input NOR gate?

Select	Answer
A	Output is high only when both inputs are high
B	Output is low when either or both inputs are high
C	Output is high when either or both inputs are low
D	Output is low only when both inputs are high

26. - G7C06

What should be the impedance of a low-pass filter as compared to the impedance of the transmission line into which it is inserted?

Select	Answer
A	Substantially lower
B	Substantially higher
C	About the same
D	Twice the transmission line impedance

27. - G8A08

Which of the following is an effect of overmodulation?

Select	Answer
A	Excessive bandwidth
B	Insufficient bandwidth
C	Frequency drift
D	Insufficient audio

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	60 kHz
B	416.7 Hz
C	101.75 Hz
D	5 kHz

29. - G8C08

Which of the following statements is true about PSK31?

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

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	4:1
B	1:4
C	2:1
D	1:2

31. - G9B07

How does the feed point impedance of a 1/2 wave dipole antenna change as the antenna is lowered below 1/4 wave above ground?

Select	Answer
A	It steadily increases
B	It peaks at about 1/8 wavelength above ground
C	It is unaffected by the height above ground
D	It steadily decreases

32. - G9C19

How does antenna gain stated in dBi compare to gain stated in dBd for the same antenna?

Select	Answer
A	dBi gain figures are 2.15 dB lower then dBd gain figures
B	dBi gain figures are the reciprocal of dBd gain figures + 2.15 dB
C	dBi gain figures are the same as the square root of dBd gain figures multiplied by 2.15
D	dBi gain figures are 2.15 dB higher than dBd gain figures

33. - G9D04

What is the primary purpose of antenna traps?

Select	Answer
A	To notch spurious frequencies
B	To provide balanced feed point impedance
C	To permit multiband operation
D	To prevent out of band operation

34. - G0A07

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

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

35. - G0B07

Which of these choices should be observed when climbing a tower using a safety belt or harness?

Select	Answer
A	All of these choices are correct
B	Confirm that the belt is rated for the weight of the climber and that it is within its allowable service life
C	Never lean back and rely on the belt alone to support your weight
D	Ensure that all heavy tools are securely fastened to the belt D-ring