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. - G1A04

Which of the following amateur bands is restricted to communication on only specific channels, rather than frequency ranges?

Select	Answer
A	11 meters
B	60 meters
C	30 meters
D	12 meters

2. - G1B08

When choosing a transmitting frequency, what should you do to comply with good amateur practice?

Select	Answer
A	Monitor the frequency before transmitting
B	Follow generally accepted band plans agreed to by the Amateur Radio community
C	All of these choices are correct
D	Insure that the frequency and mode selected are within your license class privileges

3. - G1C01

What is the maximum transmitting power an amateur station may use on 10.140 MHz?

Select	Answer
A	2000 watts PEP output
B	200 watts PEP output
C	1500 watts PEP output
D	1000 watts PEP output

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

5. - G1E11

Which of the following is the FCC term for an unattended digital station that transfers messages to and from the Internet?

Select	Answer
A	Automatically controlled digital station
B	Locally controlled station
C	Fail-safe digital station
D	Robotically controlled station

6. - G2A01

Which sideband is most commonly used for voice communications on frequencies of 14 MHz or higher?

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

7. - G2B08

What is the "DX window" in a voluntary band plan?

Select	Answer
A	A portion of the band that should not be used for contacts between stations within the 48 contiguous United States
B	An FCC rule that prohibits contacts between stations within the United States and possessions in that portion of the band
C	An FCC rule that allows only digital contacts in that portion of the band
D	A portion of the band that has been voluntarily set aside for digital contacts only

8. - G2C07

When sending CW, what does a "C" mean when added to the RST report?

Select	Answer
A	Key clicks
B	Chirpy or unstable signal
C	Report was read from an S meter rather than estimated
D	100 percent copy

9. - G2D03

What skills learned during hidden transmitter hunts are of help to the Amateur Auxiliary?

Select	Answer
A	Hunters have an opportunity to transmit on non-amateur frequencies
B	Identification of different call signs
C	Direction finding used to locate stations violating FCC Rules
D	Identification of out of band operation

10. - G2E08

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

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

11. - G3A07

At what point in the solar cycle does the 20-meter band usually support worldwide propagation during daylight hours?

Select	Answer
A	At the summer solstice
B	Only at the maximum point of the solar cycle
C	At any point in the solar cycle
D	Only at the minimum point of the solar cycle

12. - G3B06

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

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

13. - G3C08

Why are HF scatter signals in the skip zone usually weak?

Select	Answer
A	Signals are scattered from the magnetosphere which is not a good reflector
B	Only a small part of the signal energy is scattered into the skip zone
C	Propagations is through ducts in F region which absorb most of the energy
D	Propagation is through ground waves which absorb most of the signal energy

14. - G4A04

What reading on the plate current meter of a vacuum tube RF power amplifier indicates correct adjustment of the plate tuning control?

Select	Answer
A	A pronounced peak
B	A pronounced dip
C	A slow, rhythmic oscillation
D	No change will be observed

15. - G4B14

What is an instance in which the use of an instrument with analog readout may be preferred over an instrument with a digital readout?

Select	Answer
A	When adjusting tuned circuits
B	When testing logic circuits
C	When high precision is desired
D	When measuring the frequency of an oscillator

16. - G4C05

What might be the problem if you receive an RF burn when touching your equipment while transmitting on an HF band, assuming the equipment is connected to a ground rod?

Select	Answer
A	Insulated wire has been used for the ground wire
B	The ground wire has high impedance on that frequency
C	The ground rod is resonant
D	Flat braid rather than round wire has been used for the ground wire

17. - G4D04

What does an S meter measure?

Select	Answer
A	Impedance
B	Received signal strength
C	Transmitter power output
D	Conductance

18. - G4E07

Which of the following may cause interference to be heard in the receiver of an HF radio installed in a recent model vehicle?

Select	Answer
A	The battery charging system
B	The fuel delivery system
C	The vehicle control computer
D	All of these choices are correct

19. - G5A10

What unit is used to measure impedance?

Select	Answer
A	Volt
B	Ampere
C	Ohm
D	Watt

20. - G5B10

What percentage of power loss would result from a transmission line loss of 1 dB?

Select	Answer
A	20.5 percent
B	10.9 percent
C	25.9 percent
D	12.2 percent

21. - G5C09

What is the capacitance of three 100 microfarad capacitors connected in series?

Select	Answer
A	33.3 microfarads
B	300 microfarads
C	0.30 microfarads
D	0.33 microfarads

22. - G6A15

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

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

23. - G6B12

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

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

24. - G7A04

What is the peak-inverse-voltage across the rectifier in a half-wave power supply?

Select	Answer
A	One-half the normal output voltage of the power supply
B	Two times the normal peak output voltage of the power supply
C	Equal to the normal output voltage of the power supply
D	One-half the normal peak output voltage of the power supply

25. - G7B10

Which of the following is a characteristic of a Class A amplifier?

Select	Answer
A	Low distortion
B	Low standby power
C	High Efficiency
D	No need for bias

26. - G7C01

Which of the following is used to process signals from the balanced modulator then send them to the mixer in some single sideband phone transmitters?

Select	Answer
A	Filter
B	RF amplifier
C	IF amplifier
D	Carrier oscillator

27. - G8A11

What is the modulation envelope of an AM signal?

Select	Answer
A	The carrier frequency that contains the signal
B	The waveform created by connecting the peak values of the modulated signal
C	The bandwidth of the modulated signal
D	Spurious signals that envelop nearby frequencies

28. - G8B06

What is the total bandwidth of an FM phone transmission having 5 kHz deviation and 3 kHz modulating frequency?

Select	Answer
A	16 kHz
B	5 kHz
C	3 kHz
D	8 kHz

29. - G8C04

Which of the following describes Baudot code?

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

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	2:1
B	5:1
C	1:5
D	50:1

31. - G9B09

Which of the following is an advantage of a horizontally polarized as compared to a vertically polarized HF antenna?

Select	Answer
A	Lower feed point impedance
B	Shorter Radials
C	Lower radiation resistance
D	Lower ground reflection losses

32. - G9C08

What is meant by the "main lobe" of a directive antenna?

Select	Answer
A	The point of maximum current in a radiating antenna element
B	The magnitude of the maximum vertical angle of radiation
C	The direction of maximum radiated field strength from the antenna
D	The maximum voltage standing wave point on a radiating element

33. - G9D07

Which of the following describes a log periodic antenna?

Select	Answer
A	Length and spacing of the elements increase logarithmically from one end of the boom to the other
B	SWR varies periodically as a function of boom length
C	Impedance varies periodically as a function of frequency
D	Gain varies logarithmically as a function of frequency

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

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 two wires carrying voltage
D	Only the neutral wire