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. - G1A06

Which of the following frequencies is within the General Class portion of the 75-meter phone band?

Select	Answer
A	1875 kHz
B	4005 kHz
C	3900 kHz
D	3750 kHz

2. - G1B06

When is an amateur station permitted to transmit secret codes?

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

3. - G1C11

What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 2-meter band?

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

4. - G1D05

Which of the following must a person have before they can be an administering VE for a Technician Class license examination?

Select	Answer
A	Notification to the FCC that you want to give an examination
B	An FCC General Class or higher license and VEC accreditation
C	Possession of a properly obtained telegraphy license
D	Receipt of a CSCE for General Class

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

6. - G2A05

Which mode of voice communication is most commonly used on the HF amateur bands?

Select	Answer
A	Single sideband
B	Frequency modulation
C	Phase modulation
D	Double sideband

7. - G2B09

Who may be the control operator of an amateur station transmitting in RACES to assist relief operations during a disaster?

Select	Answer
A	Only a person holding an FCC issued amateur operator license
B	A person holding an FCC issued amateur operator license or an appropriate government official
C	Any control operator when normal communication systems are operational
D	Only a RACES net control operator

8. - G2C02

What should you do if a CW station sends "QRS"?

Select	Answer
A	Repeat everything twice
B	Change frequency
C	Send slower
D	Increase your power

9. - G2D04

Which of the following describes an azimuthal projection map?

Select	Answer
A	A map that shows true bearings and distances from a particular location
B	A map that shows accurate land masses
C	A map that shows the angle at which an amateur satellite crosses the equator
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. - G2E13

Which communication system sometimes uses the Internet to transfer messages?

Select	Answer
A	Winlink
B	ARES
C	Skywarn
D	RTTY

11. - G3A06

What is a geomagnetic storm?

Select	Answer
A	Ripples in the ionosphere
B	A sudden drop in the solar flux index
C	A thunderstorm which affects radio propagation
D	A temporary disturbance in the Earth's magnetosphere

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	Signal strength increased by 3 dB
B	A well-defined echo might be heard
C	The signal might be cancelled causing severe attenuation
D	Periodic fading approximately every 10 seconds

13. - G3C12

Which ionospheric layer is the most absorbent of long skip signals during daylight hours on frequencies below 10 MHz?

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

14. - G4A11

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

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

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	Antenna and feed line
D	All of these choices are correct

16. - G4C12

Which of the following is an advantage of a receiver DSP IF filter as compared to an analog filter?

Select	Answer
A	The DSP filter is much more effective at VHF frequencies
B	Mixing products are greatly reduced
C	Fewer digital components are required
D	A wide range of filter bandwidths and shapes can be created

17. - G4D06

Where is an S meter found?

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

18. - G4E08

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

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

19. - G5A08

Why is impedance matching important?

Select	Answer
A	So the load will draw minimum power from the source
B	To ensure that the resistance and reactance in the circuit are equal
C	So the source can deliver maximum power to the load
D	To ensure that there is less resistance than reactance in the circuit

20. - G5B01

What dB change represents a two-times increase or decrease in power?

Select	Answer
A	Approximately 3 dB
B	Approximately 2 dB
C	Approximately 12 dB
D	Approximately 6 dB

21. - G5C02

What happens if you reverse the primary and secondary windings of a 4:1 voltage step down transformer?

Select	Answer
A	The transformer no longer functions as it is a unidirectional device
B	Additional resistance must be added in series with the primary to prevent overload
C	The secondary voltage becomes 4 times the primary voltage
D	Additional resistance must be added in parallel with the secondary to prevent overload

22. - G6A16

What will happen to the resistance if the temperature of a resistor is increased?

Select	Answer
A	It will change depending on the resistor's temperature coefficient
B	It will change depending on the resistor's reactance coefficient
C	It will stay the same
D	It will become time dependent

23. - G6B11

What is a microprocessor?

Select	Answer
A	A computer on a single integrated circuit
B	A low power analog signal processor used as a microwave detector
C	A low voltage amplifier used in a microwave transmitter modulator stage
D	A microwave detector, amplifier, and local oscillator on a single integrated circuit

24. - G7A13

Which symbol in Figure G7-1 represents a tapped inductor?

Select	Answer
A	Symbol 6
B	Symbol 11
C	Symbol 1
D	Symbol 7

25. - G7B13

What is the reason for neutralizing the final amplifier stage of a transmitter?

Select	Answer
A	To eliminate self-oscillations
B	To cut off the final amplifier during standby periods
C	To limit the modulation index
D	To keep the carrier on frequency

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	Detector
B	IF amplifier
C	Discriminator
D	Balanced modulator

27. - G8A06

What is one advantage of carrier suppression in a single sideband phone transmission versus full carrier amplitude modulation?

Select	Answer
A	Available transmitter power can be used more effectively
B	Simpler receiving equipment can be used
C	Audio fidelity is improved
D	Greater modulation percentage is obtainable with lower distortion

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	Image response
D	Mixer interference

29. - G8C03

What part of a data packet contains the routing and handling information?

Select	Answer
A	Footer
B	Preamble
C	Directory
D	Header

30. - G9A11

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

Select	Answer
A	2:1
B	0:0
C	1:1
D	50:50

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

32. - G9C20

What is meant by the terms dBi and dBd when referring to antenna gain?

Select	Answer
A	dBi refers to an inverted-vee antenna, dBd refers to a downward reflecting antenna
B	dBi refers to an isometric antenna, dBd refers to a discone antenna
C	dBi refers to an isotropic antenna, dBd refers to a dipole antenna
D	dBi refers to an ionospheric reflecting antenna, dBd refers to a dissipative antenna

33. - G9D01

What does the term NVIS mean as related to antennas?

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

34. - G0A04

What does "time averaging" mean in reference to RF radiation exposure?

Select	Answer
A	The total time of the exposure
B	The average time it takes RF radiation to have any long-term effect on the body
C	The average amount of power developed by the transmitter over a specific 24 hour period
D	The total RF exposure averaged over a certain time

35. - G0B02

What is the minimum wire size that may be safely used for a circuit that draws up to 20 amperes of continuous current?

Select	Answer
A	AWG number 16
B	AWG number 8
C	AWG number 12
D	AWG number 20

Figure G7-1