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	60 meters
B	12 meters
C	11 meters
D	30 meters

2. - G1B02

With which of the following conditions must beacon stations comply?

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

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	3 kHz
C	2.8 kHz
D	1.8 kHz

4. - G1D04

Which of the following is a requirement for administering a Technician Class license examination?

Select	Answer
A	At least three VEs of Technician Class or higher must observe the examination
B	At least two General Class or higher VEs must be present
C	At least three General Class or higher VEs must observe the examination
D	At least two General Class or higher VEs must be present, but only one need be Extra Class

5. - G1E12

Under what circumstances are messages that are sent via digital modes exempt from Part 97 third party rules that apply to other modes of communication?

Select	Answer
A	Under no circumstances
B	When under automatic control
C	When messages are encrypted
D	When messages are not encrypted

6. - G2A10

Which of the following statements is true of voice VOX operation versus PTT operation?

Select	Answer
A	It provides more power output
B	It occupies less bandwidth
C	The received signal is more natural sounding
D	It allows "hands free" operation

7. - G2B02

What is the first thing you should do if you are communicating with another amateur station and hear a station in distress break in?

Select	Answer
A	Acknowledge the station in distress and determine what assistance may be needed
B	Continue your communication because you were on the frequency first
C	Change to a different frequency
D	Immediately cease all transmissions

8. - G2C05

What is the best speed to use when answering a CQ in Morse code?

Select	Answer
A	At the standard calling speed of 5 wpm
B	The fastest speed at which you are comfortable copying
C	A slow speed until contact is established
D	The speed at which the CQ was sent

9. - G2D03

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

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

10. - G2E13

Which communication system sometimes uses the Internet to transfer messages?

Select	Answer
A	RTTY
B	Skywarn
C	Winlink
D	ARES

11. - G3A07

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

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

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	Signal strength increased by 3 dB
C	The signal might be cancelled causing severe attenuation
D	Periodic fading approximately every 10 seconds

13. - G3C01

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

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

14. - G4A02

What is one advantage of selecting the opposite or "reverse" sideband when receiving CW signals on a typical HF transceiver?

Select	Answer
A	Accidental out of band operation can be prevented
B	Interference from impulse noise will be eliminated
C	More stations can be accommodated within a given signal passband
D	It may be possible to reduce or eliminate interference from other signals

15. - G4B11

Which of the following must be connected to an antenna analyzer when it is being used for SWR measurements?

Select	Answer
A	Antenna and feed line
B	All of these choices are correct
C	Receiver
D	Transmitter

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	Adding an additional insulating jacket to the cable
C	Adding series capacitors to the conductors
D	Placing a ferrite choke around the cable

17. - G4D06

Where is an S meter found?

Select	Answer
A	In a transmitter
B	In a receiver
C	In a conductance bridge
D	In an SWR bridge

18. - G4E08

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

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

19. - G5A05

How does an inductor react to AC?

Select	Answer
A	As the amplitude of the applied AC increases, the reactance increases
B	As the frequency of the applied AC increases, the reactance increases
C	As the amplitude of the applied AC increases, the reactance decreases
D	As the frequency of the applied AC increases, the reactance decreases

20. - G5B11

What is the ratio of peak envelope power to average power for an unmodulated carrier?

Select	Answer
A	2.00
B	0.707
C	1.00
D	1.414

21. - G5C11

What is the inductance of a 20 millihenry inductor connected in series with a 50 millihenry inductor?

Select	Answer
A	1000 millihenrys
B	14.3 millihenrys
C	70 millihenrys
D	0.07 millihenrys

22. - G6A17

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

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

23. - G6B13

Which of these connector types is commonly used for RF connections at frequencies up to 150 MHz?

Select	Answer
A	RJ-11
B	Octal
C	DB-25
D	PL-259

24. - G7A04

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

Select	Answer
A	Two times the normal peak output voltage of the power supply
B	One-half the normal 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. - G7B09

What determines the frequency of an LC oscillator?

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

26. - G7C02

Which circuit is used to combine signals from the carrier oscillator and speech amplifier then send the result to the filter in some single sideband phone transmitters?

Select	Answer
A	IF amplifier
B	Detector
C	Balanced modulator
D	Discriminator

27. - G8A04

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

Select	Answer
A	Phase modulation
B	Pulse modulation
C	Amplitude modulation
D	Multiplex modulation

28. - G8B03

What is another term for the mixing of two RF signals?

Select	Answer
A	Cancellation
B	Synthesizing
C	Heterodyning
D	Phase inverting

29. - G8C10

How does forward error correction (FEC) allow the receiver to correct errors in received data packets?

Select	Answer
A	By transmitting redundant information with the data
B	By using a parity bit with each character
C	By using the varicode character set
D	By controlling transmitter output power for optimum signal strength

30. - G9A12

What standing wave ratio will result when connecting a 50 ohm feed line to a non-reactive load having 25 ohm impedance?

Select	Answer
A	1.25:1
B	2:1
C	2.5:1
D	You cannot determine SWR from impedance values

31. - G9B09

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

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

32. - G9C04

Which statement about a three-element, single-band Yagi antenna is true?

Select	Answer
A	All of the elements must be the same length
B	The reflector is normally the shortest element
C	The reflector is normally the longest element
D	The director is normally the longest element

33. - G9D04

What is the primary purpose of antenna traps?

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

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

35. - G0B08

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

Select	Answer
A	Unground the base of the tower
B	All of these choices are correct
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