US Amateur Radio - General (Element 3, 2015-2019) Practice Test

Anonymous User

US Amateur Radio - General (Element 3, 2015-2019) Practice Test

Logging in (or registering) will help the system to select questions that you need to focus on.

1. - G1A14

In what ITU region is operation in the 7.175 to 7.300 MHz band permitted for a control operator holding an FCC issued General Class license?

Select	Answer
A	All three regions
B	Region 3
C	Region 1
D	Region 2

2. - G1B06

When is an amateur station permitted to transmit secret codes?

Select	Answer
A	Only when the information is of a routine, personal nature
B	During a declared communications emergency
C	To control a space station
D	Only with Special Temporary Authorization from the FCC

3. - G1C07

What is the maximum symbol rate permitted for RTTY or data emission transmission on the 20-meter band?

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

4. - G1D01

Who may receive credit for the elements represented by an expired amateur radio license?

Select	Answer
A	Any person who can demonstrate that they once held an FCC issued General, Advanced, or Amateur Extra class license that was not revoked by the FCC
B	Only persons who once held an FCC issued Novice, Technician, or Technician Plus license
C	Anyone who held an FCC issued amateur radio license that has been expired for not less than 5 years and not more than 15 years
D	Any person who previously held an amateur license issued by another country, but only if that country has a current reciprocal licensing agreement with the FCC

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

6. - G2A09

Why do most amateur stations use lower sideband on the 160-meter, 75-meter and 40-meter bands?

Select	Answer
A	Lower sideband is the only sideband legal on these frequency bands
B	Lower sideband is more efficient than upper sideband at these frequencies
C	Because it is fully compatible with an AM detector
D	Current amateur practice is to use lower sideband on these frequency bands

7. - G2B12

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

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

8. - G2C07

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

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

9. - G2D10

What is QRP operation?

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

10. - G2E12

Which of the following describes a waterfall display?

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

11. - G3A05

What is the solar flux index?

Select	Answer
A	A measure of solar radiation at 10.7 centimeters wavelength
B	A measure of the highest frequency that is useful for ionospheric propagation between two points on the Earth
C	Another name for the American sunspot number
D	A count of sunspots which is adjusted for solar emissions

12. - G3B06

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

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

13. - G3C06

What is a characteristic of HF scatter signals?

Select	Answer
A	They have very large swings in signal strength
B	They have a wavering sound
C	All of these choices are correct
D	They have high intelligibility

14. - G4A12

Which of the following is a common use for the dual VFO feature on a transceiver?

Select	Answer
A	To permit full duplex operation, that is transmitting and receiving at the same time
B	To facilitate computer interface
C	To permit monitoring of two different frequencies
D	To allow transmitting on two frequencies at once

15. - G4B11

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

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

16. - G4C02

Which of the following could be a cause of interference covering a wide range of frequencies?

Select	Answer
A	Lack of rectification of the transmitter's signal in power conductors
B	Not using a balun or line isolator to feed balanced antennas
C	Arcing at a poor electrical connection
D	Using a balun to feed an unbalanced antenna

17. - G4D04

What does an S meter measure?

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

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

19. - G5A11

Which of the following describes one method of impedance matching between two AC circuits?

Select	Answer
A	Reduce the power output of the first circuit
B	Insert a circulator between the two circuits
C	Increase the power output of the first circuit
D	Insert an LC network between the two circuits

20. - G5B04

How many watts of electrical power are used by a 12 VDC light bulb that draws 0.2 amperes?

Select	Answer
A	60 watts
B	24 watts
C	2.4 watts
D	6 watts

21. - G5C11

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

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

22. - G6A12

What is the primary purpose of a screen grid in a vacuum tube?

Select	Answer
A	To decrease plate resistance
B	To increase efficiency
C	To reduce grid-to-plate capacitance
D	To increase the control grid resistance

23. - G6B18

What is a type SMA connector?

Select	Answer
A	A large bayonet connector usable at power levels in excess of 1 KW
B	A small threaded connector suitable for signals up to several GHz
C	A type of push-on connector intended for high voltage applications
D	A connector designed for serial multiple access signals

24. - G7A12

Which symbol in Figure G7-1 represents a multiple-winding transformer?

Select	Answer
A	Symbol 7
B	Symbol 4
C	Symbol 1
D	Symbol 6

25. - G7B06

What is a shift register?

Select	Answer
A	A digital mixer
B	A clocked array of circuits that passes data in steps along the array
C	An analog mixer
D	An array of operational amplifiers used for tri-state arithmetic operations

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 differential spurious phasing
D	By using direct signal phasing

27. - G8A11

What is the modulation envelope of an AM signal?

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

28. - G8B04

What is the stage in a VHF FM transmitter that generates a harmonic of a lower frequency signal to reach the desired operating frequency?

Select	Answer
A	Pre-emphasis network
B	Mixer
C	Multiplier
D	Reactance modulator

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	Packets will be routed incorrectly
C	Encoding reverts to the default character set
D	The checksum overflows

30. - G9A07

What must be done to prevent standing waves on an antenna feed line?

Select	Answer
A	The feed line must be cut to a length equal to an odd number of electrical quarter wavelengths
B	The antenna feed point impedance must be matched to the characteristic impedance of the feed line
C	The antenna feed point must be at DC ground potential
D	The feed line must be cut to a length equal to an even number of physical half wavelengths

31. - G9B11

What is the approximate length for a 1/2 wave dipole antenna cut for 3.550 MHz?

Select	Answer
A	263 feet
B	84 feet
C	42 feet
D	131 feet

32. - G9C17

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

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

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	Near Vertical Incidence sky-wave
D	Nearly Vertical Inductance System

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

35. - G0B15

Which of the following is true of an emergency generator installation?

Select	Answer
A	The generator must be insulated from ground
B	The generator should be located in a well-ventilated area
C	Fuel should be stored near the generator for rapid refueling in case of an emergency
D	All of these choices are correct

Figure G7-1