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. - G1A02

On which of the following bands is phone operation prohibited?

Select	Answer
A	17 meters
B	12 meters
C	160 meters
D	30 meters

2. - G1B01

What is the maximum height above ground to which an antenna structure may be erected without requiring notification to the FAA and registration with the FCC, provided it is not at or near a public use airport?

Select	Answer
A	100 feet
B	200 feet
C	50 feet
D	300 feet

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	3 kHz
B	2.8 kHz
C	1.8 kHz
D	5.6 kHz

4. - G1D10

What is the minimum age that one must be to qualify as an accredited Volunteer Examiner?

Select	Answer
A	12 years
B	18 years
C	21 years
D	There is no age limit

5. - G1E08

Which of the following is a requirement for a non-licensed person to communicate with a foreign Amateur Radio station from a station with an FCC-granted license at which an FCC licensed control operator is present?

Select	Answer
A	The control operator must have at least a General Class license
B	All of these choices are correct
C	Information must be exchanged in English
D	The foreign amateur station must be in a country with which the United States has a third party agreement

6. - G2A02

Which of the following modes is most commonly used for voice communications on the 160-meter, 75-meter, and 40-meter bands?

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

7. - G2B12

When is an amateur station allowed to use any means at its disposal to assist another station in distress?

Select	Answer
A	At any time during an actual emergency
B	At any time when transmitting in an organized net
C	Only when transmitting in RACES
D	Only on authorized HF frequencies

8. - G2C06

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

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

9. - G2D04

Which of the following describes an azimuthal projection map?

Select	Answer
A	A map that shows accurate land masses
B	A map that shows the angle at which an amateur satellite crosses the equator
C	A map that shows true bearings and distances from a particular location
D	A map that shows the number of degrees longitude that an amateur satellite appears to move westward at the equator with each orbit

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

11. - G3A11

Approximately how long is the typical sunspot cycle?

Select	Answer
A	28 days
B	40 hours
C	11 years
D	8 minutes

12. - G3B11

What happens to HF propagation when the LUF exceeds the MUF?

Select	Answer
A	No HF radio frequency will support ordinary sky-wave communications over the path
B	HF communications over the path are enhanced
C	Propagation over the path on all HF frequencies is enhanced
D	Double hop propagation along the path is more common

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	Propagation is through ground waves which absorb most of the signal energy
D	Propagations is through ducts in F region which absorb most of the energy

14. - G4A13

What is one reason to use the attenuator function that is present on many HF transceivers?

Select	Answer
A	To reduce the transmitter power when driving a linear amplifier
B	To slow down received CW signals for better copy
C	To reduce signal overload due to strong incoming signals
D	To reduce power consumption when operating from batteries

15. - G4B01

What item of test equipment contains horizontal and vertical channel amplifiers?

Select	Answer
A	A signal generator
B	An ammeter
C	An ohmmeter
D	An oscilloscope

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 an additional insulating jacket to the cable
C	Adding shunt inductors to the conductors
D	Adding series capacitors to the conductors

17. - G4D02

Which of the following describes how a speech processor affects a transmitted single sideband phone signal?

Select	Answer
A	It increases average power
B	It reduces intermodulation distortion
C	It reduces harmonic distortion
D	It increases peak power

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

19. - G5A06

How does a capacitor react to AC?

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

20. - G5B05

How many watts are dissipated when a current of 7.0 milliamperes flows through 1.25 kilohms resistance?

Select	Answer
A	Approximately 61 milliwatts
B	Approximately 11 watts
C	Approximately 11 milliwatts
D	Approximately 61 watts

21. - G5C17

What is the value in nanofarads (nF) of a 22,000 pF capacitor?

Select	Answer
A	22 nF
B	220 nF
C	2.2 nF
D	0.22 nF

22. - G6A02

What is an advantage of the low internal resistance of nickel-cadmium batteries?

Select	Answer
A	High voltage
B	High discharge current
C	Rapid recharge
D	Long life

23. - G6B16

Which of the following describes a type N connector?

Select	Answer
A	An audio connector used in surround-sound installations
B	A threaded connector used for hydraulic systems
C	A moisture-resistant RF connector useful to 10 GHz
D	A small bayonet connector used for data circuits

24. - G7A10

Which symbol in figure G7-1 represents a Zener diode?

Select	Answer
A	Symbol 4
B	Symbol 1
C	Symbol 5
D	Symbol 11

25. - G7B01

Complex digital circuitry can often be replaced by what type of integrated circuit?

Select	Answer
A	Charge-coupled device
B	Microcontroller
C	Phase detector
D	Window comparator

26. - G7C10

How is Digital Signal Processor filtering accomplished?

Select	Answer
A	By converting the signal from digital to analog and taking the difference of mixing products
B	By converting the signal from analog to digital and using digital processing
C	By using direct signal phasing
D	By differential spurious phasing

27. - G8A04

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

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

28. - G8B06

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

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

29. - G8C06

What action results from a failure to exchange information due to excessive transmission attempts when using PACTOR or WINMOR?

Select	Answer
A	The connection is dropped
B	The checksum overflows
C	Encoding reverts to the default character set
D	Packets will be routed incorrectly

30. - G9A03

What is the characteristic impedance of flat ribbon TV type twinlead?

Select	Answer
A	100 ohms
B	75 ohms
C	300 ohms
D	50 ohms

31. - G9B03

What happens to the feed point impedance of a ground plane antenna when its radials are changed from horizontal to sloping downward?

Select	Answer
A	It decreases
B	It stays the same
C	It reaches a maximum at an angle of 45 degrees
D	It increases

32. - G9C03

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

Select	Answer
A	The driven element is the longest element
B	The reflector is normally the shortest element
C	Low feed point impedance increases bandwidth
D	The director is normally the shortest element

33. - G9D01

What does the term NVIS mean as related to antennas?

Select	Answer
A	Non-Varying Impedance Smoothing
B	Non-Varying Indicated SWR
C	Nearly Vertical Inductance System
D	Near Vertical Incidence sky-wave

34. - G0A05

What must you do if an evaluation of your station shows RF energy radiated from your station exceeds permissible limits?

Select	Answer
A	File an Environmental Impact Statement (EIS-97) with the FCC
B	Take action to prevent human exposure to the excessive RF fields
C	All of these choices are correct
D	Secure written permission from your neighbors to operate above the controlled MPE limits

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

Figure G7-1