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. - G1A11

When General Class licensees are not permitted to use the entire voice portion of a particular band, which portion of the voice segment is generally available to them?

Select	Answer
A	The upper frequency end on frequencies below 7.3 MHz and the lower end on frequencies above 14.150 MHz
B	The lower frequency end on frequencies below 7.3 MHz and the upper end on frequencies above 14.150 MHz
C	The lower frequency end
D	The upper frequency end

2. - G1B02

With which of the following conditions must beacon stations comply?

Select	Answer
A	A beacon station may not use automatic control
B	The frequency must be coordinated with the National Beacon Organization
C	The frequency must be posted on the Internet or published in a national periodical
D	There must be no more than one beacon signal transmitting in the same band from the same station location

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	200 watts PEP output
C	1500 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	On any General or Technician Class band segment
B	Only the Technician band segments until your upgrade is posted in the FCC database
C	On any General or Technician Class band segment except 30-meters and 60-meters
D	Only on the Technician band segments until your license arrives in the mail

5. - G1E06

Which of the following applies in the event of interference between a coordinated repeater and an uncoordinated repeater?

Select	Answer
A	The licensee of the coordinated repeater has primary responsibility to resolve the interference
B	Both repeater licensees share equal responsibility to resolve the interference
C	The licensee of the uncoordinated repeater has primary responsibility to resolve the interference
D	The frequency coordinator bears primary responsibility to resolve the interference

6. - G2A08

Which of the following is a recommended way to break into a contact when using phone?

Select	Answer
A	Say your call sign during a break between transmissions by the other stations
B	Say "QRZ" several times followed by your call sign
C	Say "CQ" followed by the call sign of either station
D	Say "Break Break Break" and wait for a response

7. - G2B07

Which of the following complies with good amateur practice when choosing a frequency on which to initiate a call?

Select	Answer
A	All of these choices are correct
B	Follow the voluntary band plan for the operating mode you intend to use
C	Identify your station by transmitting your call sign at least 3 times
D	Check to see if the channel is assigned to another station

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. - G2D10

What is QRP operation?

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

10. - G2E12

Which of the following describes a waterfall display?

Select	Answer
A	Frequency is vertical, signal strength is intensity, time is horizontal
B	Frequency is horizontal, signal strength is vertical, time is intensity
C	Frequency is vertical, signal strength is horizontal, time is intensity
D	Frequency is horizontal, signal strength is intensity, time is vertical

11. - G3A02

What effect does a Sudden Ionospheric Disturbance have on the daytime ionospheric propagation of HF radio waves?

Select	Answer
A	It disrupts signals on lower frequencies more than those on higher frequencies
B	It disrupts communications via satellite more than direct communications
C	None, because only areas on the night side of the Earth are affected
D	It enhances propagation on all HF frequencies

12. - G3B02

Which of the following is a good indicator of the possibility of sky-wave propagation on the 6-meter band?

Select	Answer
A	Long skip sky-wave propagation on the 10-meter band
B	Short skip sky-wave propagation on the 10-meter band
C	Severe attenuation of signals on the 10-meter band
D	Long delayed echoes on the 10-meter band

13. - G3C07

What makes HF scatter signals often sound distorted?

Select	Answer
A	The E-region is not present
B	Energy is scattered into the skip zone through several different radio wave paths
C	The ionospheric layer involved is unstable
D	Ground waves are absorbing much of the signal

14. - G4A11

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

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

15. - G4B06

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

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

16. - G4C10

What could be a symptom of a ground loop somewhere in your station?

Select	Answer
A	You receive reports of "hum" on your station's transmitted signal
B	The SWR reading for one or more antennas is suddenly very high
C	An item of station equipment starts to draw excessive amounts of current
D	You receive reports of harmonic interference from your station

17. - G4D05

How does a signal that reads 20 dB over S9 compare to one that reads S9 on a receiver, assuming a properly calibrated S meter?

Select	Answer
A	It is 100 times more powerful
B	It is 10 times less powerful
C	It is 20 times less powerful
D	It is 20 times more powerful

18. - G4E09

What is the approximate open-circuit voltage from a fully illuminated silicon photovoltaic cell?

Select	Answer
A	0.5 VDC
B	0.2 VDC
C	0.02 VDC
D	1.38 VDC

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. - 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	10.9 percent
D	20.5 percent

21. - G5C10

What is the inductance of three 10 millihenry inductors connected in parallel?

Select	Answer
A	30 millihenrys
B	3.3 millihenrys
C	3.3 henrys
D	0.30 henrys

22. - G6A11

Which of the following solid state devices is most like a vacuum tube in its general operating characteristics?

Select	Answer
A	A bipolar transistor
B	A field effect transistor
C	A tunnel diode
D	A varistor

23. - G6B12

Which of the following connectors would be a good choice for a serial data port?

Select	Answer
A	DE-9
B	PL-259
C	Type N
D	Type SMA

24. - G7A08

Which of the following is an advantage of a switchmode power supply as compared to a linear power supply?

Select	Answer
A	Fewer circuit components are required
B	All of these choices are correct
C	Faster switching time makes higher output voltage possible
D	High frequency operation allows the use of smaller components

25. - G7B09

What determines the frequency of an LC oscillator?

Select	Answer
A	The number of stages in the counter
B	The inductance and capacitance in the tank circuit
C	The time delay of the lag circuit
D	The number of stages in the divider

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	RF oscillator
B	IF filter
C	Product detector
D	Balanced modulator

27. - G8A04

What emission is produced by a reactance modulator connected to a transmitter RF amplifier stage?

Select	Answer
A	Pulse modulation
B	Amplitude modulation
C	Phase modulation
D	Multiplex 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	Quadrature noise
B	Intermediate interference
C	Mixer interference
D	Image response

29. - G8C04

Which of the following describes Baudot code?

Select	Answer
A	A code using error detection and correction
B	A 7-bit code with start, stop and parity bits
C	A 5-bit code with additional start and stop bits
D	A code using SELCAL and LISTEN

30. - G9A04

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

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

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 upward
B	Slope the radials downward
C	Shorten the radials
D	Lengthen the radials

32. - G9C17

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

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

33. - G9D02

Which of the following is an advantage of an NVIS antenna?

Select	Answer
A	All of these choices are correct
B	High vertical angle radiation for working stations within a radius of a few hundred kilometers
C	Low vertical angle radiation for working stations out to ranges of several thousand kilometers
D	High forward gain

34. - G0A02

Which of the following properties is important in estimating whether an RF signal exceeds the maximum permissible exposure (MPE)?

Select	Answer
A	Its power density
B	All of these choices are correct
C	Its duty cycle
D	Its frequency

35. - G0B09

Why should soldered joints not be used with the wires that connect the base of a tower to a system of ground rods?

Select	Answer
A	The resistance of solder is too high
B	Solder has too high a dielectric constant to provide adequate lightning protection
C	A soldered joint will likely be destroyed by the heat of a lightning strike
D	Solder flux will prevent a low conductivity connection