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. - G1A11

When General Class licensees are not permitted to use the entire voice portion of a particular band, which portion of the voice segment is generally available to them?

Select	Answer
A	The upper frequency end
B	The lower frequency end
C	The upper frequency end on frequencies below 7.3 MHz and the lower end on frequencies above 14.150 MHz
D	The lower frequency end on frequencies below 7.3 MHz and the upper end on frequencies above 14.150 MHz

2. - G1B04

Which of the following must be true before amateur stations may provide communications to broadcasters for dissemination to the public?

Select	Answer
A	All of these choices are correct
B	The communications must directly relate to the immediate safety of human life or protection of property and there must be no other means of communication reasonably available before or at the time of the event
C	The FCC must have declared a state of emergency
D	The communications must be approved by a local emergency preparedness official and conducted on officially designated frequencies

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	5.6 kHz
B	2.8 kHz
C	1.8 kHz
D	3 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	There is no age limit
C	21 years
D	18 years

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

6. - G2A09

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

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

7. - G2B10

When may the FCC restrict normal frequency operations of amateur stations participating in RACES?

Select	Answer
A	When the President's War Emergency Powers have been invoked
B	When they seize your equipment for use in disaster communications
C	When they declare a temporary state of communication emergency
D	Only when all amateur stations are instructed to stop transmitting

8. - G2C04

What does the Q signal "QRL?" mean?

Select	Answer
A	"Are you busy?", or "Is this frequency in use?"
B	"Will you keep the frequency clear?"
C	"Are you operating full break-in" or "Can you operate full break-in?"
D	"Are you listening only for a specific station?"

9. - G2D10

What is QRP operation?

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

10. - G2E11

What is indicated on a waterfall display by one or more vertical lines adjacent to a PSK31 signal?

Select	Answer
A	Insufficient modulation
B	Overmodulation
C	Backscatter propagation
D	Long Path propagation

11. - G3A10

What causes HF propagation conditions to vary periodically in a 28 day cycle?

Select	Answer
A	The position of the Moon in its orbit
B	Cyclic variation in the Earth's radiation belts
C	The Sun's rotation on its axis
D	Long term oscillations in the upper atmosphere

12. - G3B04

What is a reliable way to determine if the MUF is high enough to support skip propagation between your station and a distant location on frequencies between 14 and 30 MHz?

Select	Answer
A	Send a series of dots on the band and listen for echoes from your signal
B	Listen for signals from an international beacon in the frequency range you plan to use
C	Check the strength of TV signals from Western Europe
D	Check the strength of signals in the MF AM broadcast band

13. - G3C01

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

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

14. - G4A04

What reading on the plate current meter of a vacuum tube RF power amplifier indicates correct adjustment of the plate tuning control?

Select	Answer
A	A slow, rhythmic oscillation
B	No change will be observed
C	A pronounced dip
D	A pronounced peak

15. - G4B05

Why is high input impedance desirable for a voltmeter?

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

16. - G4C06

What effect can be caused by a resonant ground connection?

Select	Answer
A	High RF voltages on the enclosures of station equipment
B	Overheating of ground straps
C	Corrosion of the ground rod
D	A ground loop

17. - G4D03

Which of the following can be the result of an incorrectly adjusted speech processor?

Select	Answer
A	Excessive background pickup
B	Splatter
C	All of these choices are correct
D	Distorted speech

18. - G4E08

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

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

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. - G5B10

What percentage of power loss would result from a transmission line loss of 1 dB?

Select	Answer
A	25.9 percent
B	10.9 percent
C	12.2 percent
D	20.5 percent

21. - G5C13

Which of the following components should be added to a capacitor to increase the capacitance?

Select	Answer
A	An inductor in series
B	A capacitor in parallel
C	A resistor in series
D	A capacitor in series

22. - G6A06

Which of the following is an advantage of using a Schottky diode in an RF switching circuit rather than a standard silicon diode?

Select	Answer
A	Lower inductance
B	Longer switching times
C	Higher breakdown voltage
D	Lower capacitance

23. - G6B07

Which of the following is an advantage of an LED indicator compared to an incandescent indicator?

Select	Answer
A	Lower power consumption
B	All of these choices are correct
C	Faster response time
D	Longer life

24. - G7A08

Which of the following is an advantage of a switchmode power supply as compared to a linear power supply?

Select	Answer
A	All of these choices are correct
B	Fewer circuit components are required
C	Faster switching time makes higher output voltage possible
D	High frequency operation allows the use of smaller components

25. - G7B11

For which of the following modes is a Class C power stage appropriate for amplifying a modulated signal?

Select	Answer
A	All of these choices are correct
B	AM
C	SSB
D	CW

26. - G7C10

How is Digital Signal Processor filtering accomplished?

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

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 modulation
B	Frequency transformation
C	Frequency conversion
D	Frequency convolution

28. - G8B09

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

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

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

30. - G9A12

What standing wave ratio will result when connecting a 50 ohm feed line to a non-reactive load having 25 ohm impedance?

Select	Answer
A	2:1
B	2.5:1
C	You cannot determine SWR from impedance values
D	1.25:1

31. - G9B09

Which of the following is an advantage of a horizontally polarized as compared to a vertically polarized HF antenna?

Select	Answer
A	Lower ground reflection losses
B	Lower radiation resistance
C	Lower feed point impedance
D	Shorter Radials

32. - G9C18

What happens when the feed point of a quad antenna of any shape is moved from the midpoint of the top or bottom to the midpoint of either side?

Select	Answer
A	The polarization of the radiated signal changes from vertical to horizontal
B	The polarization of the radiated signal changes from horizontal to vertical
C	There is no change in polarization
D	The radiated signal becomes circularly polarized

33. - G9D07

Which of the following describes a log periodic antenna?

Select	Answer
A	Impedance varies periodically as a function of frequency
B	Gain varies logarithmically as a function of frequency
C	SWR varies periodically as a function of boom length
D	Length and spacing of the elements increase logarithmically from one end of the boom to the other

34. - G0A07

What effect does transmitter duty cycle have when evaluating RF exposure?

Select	Answer
A	Low duty cycle transmitters are exempt from RF exposure evaluation requirements
B	A lower transmitter duty cycle permits greater short-term exposure levels
C	High duty cycle transmitters are exempt from RF exposure requirements
D	A higher transmitter duty cycle permits greater short-term exposure levels

35. - G0B05

Which of the following conditions will cause a Ground Fault Circuit Interrupter (GFCI) to disconnect the 120 or 240 Volt AC line power to a device?

Select	Answer
A	All of these choices are correct
B	Current flowing from one or more of the voltage-carrying wires directly to ground
C	Current flowing from one or more of the voltage-carrying wires to the neutral wire
D	Overvoltage on the voltage-carrying wires