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	12 meters
B	160 meters
C	30 meters
D	17 meters

2. - G1B09

When may an amateur station transmit communications in which the licensee or control operator has a pecuniary (monetary) interest?

Select	Answer
A	Only when there is no other means of communications readily available
B	When other amateurs are being notified of the sale of any item with a monetary value less than $200 and such activity is not done on a regular basis
C	Never
D	When other amateurs are being notified of the sale of apparatus normally used in an amateur station and such activity is not done on a regular basis

3. - G1C11

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

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

4. - G1D04

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

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

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

7. - G2B03

If propagation changes during your contact and you notice increasing interference from other activity on the same frequency, what should you do?

Select	Answer
A	Tell the interfering stations to change frequency
B	Increase power to overcome interference
C	Report the interference to your local Amateur Auxiliary Coordinator
D	As a common courtesy, move your contact to another frequency

8. - G2C03

What does it mean when a CW operator sends "KN" at the end of a transmission?

Select	Answer
A	Listening for novice stations
B	Listening only for a specific station or stations
C	Operating full break-in
D	Closing station now

9. - G2D01

What is the Amateur Auxiliary to the FCC?

Select	Answer
A	Amateur volunteers who are formally enlisted to monitor the airwaves for rules violations
B	Amateur volunteers who use their station equipment to help civil defense organizations in times of emergency
C	Amateur volunteers who conduct amateur licensing examinations
D	Amateur volunteers who conduct frequency coordination for amateur VHF repeaters

10. - G2E01

Which mode is normally used when sending an RTTY signal via AFSK with an SSB transmitter?

Select	Answer
A	USB
B	CW
C	LSB
D	DSB

11. - G3A02

What effect does a Sudden Ionospheric Disturbance have on the daytime ionospheric propagation of HF radio waves?

Select	Answer
A	It disrupts signals on lower frequencies more than those on higher frequencies
B	It disrupts communications via satellite more than direct communications
C	None, because only areas on the night side of the Earth are affected
D	It enhances propagation on all HF frequencies

12. - G3B05

What usually happens to radio waves with frequencies below the MUF and above the LUF when they are sent into the ionosphere?

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

13. - G3C01

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

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

14. - G4A01

What is the purpose of the "notch filter" found on many HF transceivers?

Select	Answer
A	To reduce interference from carriers in the receiver passband
B	To restrict the transmitter voice bandwidth
C	To enhance the reception of a specific frequency on a crowded band
D	To eliminate receiver interference from impulse noise sources

15. - G4B13

What is a use for an antenna analyzer other than measuring the SWR of an antenna system?

Select	Answer
A	Measuring the front to back ratio of an antenna
B	Measuring the turns ratio of a power transformer
C	Determining the gain of a directional antenna
D	Determining the impedance of an unknown or unmarked coaxial cable

16. - G4C10

What could be a symptom of a ground loop somewhere in your station?

Select	Answer
A	The SWR reading for one or more antennas is suddenly very high
B	You receive reports of harmonic interference from your station
C	An item of station equipment starts to draw excessive amounts of current
D	You receive reports of "hum" on your station's transmitted signal

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

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

19. - G5A06

How does a capacitor react to AC?

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

20. - G5B13

What is the output PEP of an unmodulated carrier if an average reading wattmeter connected to the transmitter output indicates 1060 watts?

Select	Answer
A	1060 watts
B	2120 watts
C	1500 watts
D	530 watts

21. - G5C10

What is the inductance of three 10 millihenry inductors connected in parallel?

Select	Answer
A	0.30 henrys
B	3.3 henrys
C	30 millihenrys
D	3.3 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. - G6B09

Which of the following is a characteristic of a liquid crystal display?

Select	Answer
A	It offers a wide dynamic range
B	It has a wide viewing angle
C	It requires ambient or back lighting
D	All of these choices are correct

24. - G7A02

Which of the following components are used in a power supply filter network?

Select	Answer
A	Quartz crystals
B	Transformers and transducers
C	Capacitors and inductors
D	Diodes

25. - G7B09

What determines the frequency of an LC oscillator?

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

26. - G7C09

Which of the following is needed for a Digital Signal Processor IF filter?

Select	Answer
A	An analog to digital converter
B	A digital processor chip
C	All of the these choices are correct
D	A digital to analog converter

27. - G8A11

What is the modulation envelope of an AM signal?

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

28. - G8B09

Why is it good to match receiver bandwidth to the bandwidth of the operating mode?

Select	Answer
A	It results in the best signal to noise ratio
B	It improves impedance matching of the antenna
C	It minimizes power consumption in the receiver
D	It is required by FCC rules

29. - G8C12

Which type of code is used for sending characters in a PSK31 signal?

Select	Answer
A	Volumetric
B	Varicode
C	Binary
D	Viterbi

30. - G9A04

What might cause reflected power at the point where a feed line connects to an antenna?

Select	Answer
A	Operating an antenna at its resonant frequency
B	Using more transmitter power than the antenna can handle
C	Feeding the antenna with unbalanced feed line
D	A difference between feed line impedance and antenna feed point impedance

31. - G9B05

How does antenna height affect the horizontal (azimuthal) radiation pattern of a horizontal dipole HF antenna?

Select	Answer
A	If the antenna is less than 1/2 wavelength high, the azimuthal pattern is almost omnidirectional
B	If the antenna is less than 1/2 wavelength high, radiation off the ends of the wire is eliminated
C	Antenna height has no effect on the pattern
D	If the antenna is too high, the pattern becomes unpredictable

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

34. - G0A12

What precaution should you take whenever you make adjustments or repairs to an antenna?

Select	Answer
A	Turn off the transmitter and disconnect the feed line
B	Wear a radiation badge
C	All of these choices are correct
D	Ensure that you and the antenna structure are grounded

35. - G0B08

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

Select	Answer
A	Make sure all circuits that supply power to the tower are locked out and tagged
B	Notify the electric company that a person will be working on the tower
C	All of these choices are correct
D	Unground the base of the tower