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. - G1A03

On which of the following bands is image transmission prohibited?

Select	Answer
A	12 meters
B	160 meters
C	30 meters
D	20 meters

2. - G1B11

How does the FCC require an amateur station to be operated in all respects not specifically covered by the Part 97 rules?

Select	Answer
A	In conformance with the rules of the IARU
B	All of these choices are correct
C	In conformance with good engineering and good amateur practice
D	In conformance with Amateur Radio custom

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	1000 watts PEP output
C	1500 watts PEP output
D	200 watts PEP output

4. - G1D11

If a person has an expired FCC issued amateur radio license of General Class or higher, what is required before they can receive a new license?

Select	Answer
A	The applicant must be able to produce a copy of a page from a call book published in the USA showing his or her name and address
B	They must have a letter from the FCC showing they once held an amateur or commercial license
C	The applicant must pass the current element 2 exam
D	There are no requirements other than being able to show a copy of the expired license

5. - G1E05

What types of messages for a third party in another country may be transmitted by an amateur station?

Select	Answer
A	Any message, as long as the amateur operator is not paid
B	Only messages for other licensed amateurs
C	Only messages relating to Amateur Radio or remarks of a personal character, or messages relating to emergencies or disaster relief
D	Any messages, as long as the text of the message is recorded in the station log

6. - G2A10

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

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

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

8. - G2C02

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

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

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. - G2E07

What segment of the 80-meter band is most commonly used for digital transmissions?

Select	Answer
A	3700 - 3750 kHz
B	3500 - 3525 kHz
C	3570 - 3600 kHz
D	3775 - 3825 kHz

11. - G3A09

What effect does a high sunspot number have on radio communications?

Select	Answer
A	High-frequency radio signals become weak and distorted
B	Microwave communications become unstable
C	Long-distance communication in the upper HF and lower VHF range is enhanced
D	Frequencies above 300 MHz become usable for long-distance communication

12. - G3B03

Which of the following applies when selecting a frequency for lowest attenuation when transmitting on HF?

Select	Answer
A	Select a frequency just below the critical frequency
B	Select a frequency just above the critical frequency
C	Select a frequency just above the LUF
D	Select a frequency just below the MUF

13. - G3C03

Why is the F2 region mainly responsible for the longest distance radio wave propagation?

Select	Answer
A	Because it does not absorb radio waves as much as other ionospheric regions
B	Because it is the densest ionospheric layer
C	Because it is the highest ionospheric region
D	All of these choices are correct

14. - G4A07

What condition can lead to permanent damage to a solid-state RF power amplifier?

Select	Answer
A	Insufficient drive power
B	Excessive drive power
C	Low input SWR
D	Shorting the input signal to ground

15. - G4B05

Why is high input impedance desirable for a voltmeter?

Select	Answer
A	It decreases battery consumption in the meter
B	It improves the frequency response
C	It improves the resolution of the readings
D	It decreases the loading on circuits being measured

16. - G4C07

What is one good way to avoid unwanted effects of stray RF energy in an amateur station?

Select	Answer
A	Install a few ferrite beads on the ground wire where it connects to your station
B	Use a ground loop for best conductivity
C	Connect all equipment grounds together
D	Install an RF filter in series with the ground wire

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 harmonic distortion
C	It reduces intermodulation distortion
D	It increases peak power

18. - G4E10

What is the reason that a series diode is connected between a solar panel and a storage battery that is being charged by the panel?

Select	Answer
A	The diode limits the current flowing from the panel to a safe value
B	The diode prevents self-discharge of the battery though the panel during times of low or no illumination
C	The diode greatly increases the efficiency during times of high illumination
D	The diode serves to regulate the charging voltage to prevent overcharge

19. - G5A04

Which of the following causes opposition to the flow of alternating current in a capacitor?

Select	Answer
A	Reactance
B	Admittance
C	Conductance
D	Reluctance

20. - G5B12

What would be the RMS voltage across a 50 ohm dummy load dissipating 1200 watts?

Select	Answer
A	692 volts
B	245 volts
C	346 volts
D	173 volts

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. - G6A18

What is an advantage of using a ferrite core toroidal inductor?

Select	Answer
A	The magnetic properties of the core may be optimized for a specific range of frequencies
B	Large values of inductance may be obtained
C	All of these choices are correct
D	Most of the magnetic field is contained in the core

23. - G6B10

What two devices in an Amateur Radio station might be connected using a USB interface?

Select	Answer
A	Amplifier and antenna
B	Power supply and amplifier
C	Computer and transceiver
D	Microphone and transceiver

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	One-half the normal peak output voltage of the power supply
D	Equal to the normal output voltage of the power supply

25. - G7B04

Which of the following describes the function of a two input NOR gate?

Select	Answer
A	Output is low when either or both inputs are high
B	Output is high only when both inputs are high
C	Output is high when either or both inputs are low
D	Output is low only when both inputs are high

26. - G7C06

What should be the impedance of a low-pass filter as compared to the impedance of the transmission line into which it is inserted?

Select	Answer
A	About the same
B	Twice the transmission line impedance
C	Substantially lower
D	Substantially higher

27. - G8A03

What is the name of the process that changes the instantaneous frequency of an RF wave to convey information?

Select	Answer
A	Frequency transformation
B	Frequency modulation
C	Frequency convolution
D	Frequency conversion

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	Mixer
B	Pre-emphasis network
C	Reactance modulator
D	Multiplier

29. - G8C03

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

Select	Answer
A	Footer
B	Directory
C	Header
D	Preamble

30. - G9A01

Which of the following factors determine the characteristic impedance of a parallel conductor antenna feed line?

Select	Answer
A	The frequency of the signal and the length of the line
B	The distance between the centers of the conductors and the length of the line
C	The distance between the centers of the conductors and the radius of the conductors
D	The radius of the conductors and the frequency of the signal

31. - G9B01

What is one disadvantage of a directly fed random-wire HF antenna?

Select	Answer
A	It must be longer than 1 wavelength
B	It produces only vertically polarized radiation
C	It is more effective on the lower HF bands than on the higher bands
D	You may experience RF burns when touching metal objects in your station

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 isotropic antenna, dBd refers to a dipole antenna
C	dBi refers to an ionospheric reflecting antenna, dBd refers to a dissipative antenna
D	dBi refers to an isometric antenna, dBd refers to a discone antenna

33. - G9D01

What does the term NVIS mean as related to antennas?

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

34. - G0A04

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

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

35. - G0B14

Which of the following is covered by the National Electrical Code?

Select	Answer
A	Electrical safety inside the ham shack
B	Acceptable bandwidth limits
C	RF exposure limits of the human body
D	Acceptable modulation limits