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. - G1A07

Which of the following frequencies is within the General Class portion of the 20-meter phone band?

Select	Answer
A	14005 kHz
B	14305 kHz
C	14405 kHz
D	14105 kHz

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 FCC must have declared a state of emergency
C	The communications must be approved by a local emergency preparedness official and conducted on officially designated frequencies
D	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

3. - G1C02

What is the maximum transmitting power an amateur station may use on the 12-meter band?

Select	Answer
A	50 watts PEP output
B	An effective radiated power equivalent to 100 watts from a half-wave dipole
C	1500 watts PEP output
D	200 watts PEP output

4. - G1D09

How long is a Certificate of Successful Completion of Examination (CSCE) valid for exam element credit?

Select	Answer
A	For as long as your current license is valid
B	180 days
C	30 days
D	365 days

5. - G1E07

With which foreign countries is third party traffic prohibited, except for messages directly involving emergencies or disaster relief communications?

Select	Answer
A	Countries in ITU Region 2
B	Countries in ITU Region 1
C	Any country which is not a member of the International Amateur Radio Union (IARU)
D	Every foreign country, unless there is a third party agreement in effect with that country

6. - G2A11

What does the expression "CQ DX" usually indicate?

Select	Answer
A	The caller is looking for any station outside their own country
B	The caller is listening for a station in Germany
C	A general call for any station
D	A distress call

7. - G2B10

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

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

8. - G2C10

What does the Q signal "QRN" mean?

Select	Answer
A	I am troubled by static
B	Send more slowly
C	Stop sending
D	Zero beat my signal

9. - G2D08

What is a reason why many amateurs keep a station log?

Select	Answer
A	The ITU requires a log of all international third party traffic
B	The log provides evidence of operation needed to renew a license without retest
C	The ITU requires a log of all international contacts
D	To help with a reply if the FCC requests information

10. - G2E12

Which of the following describes a waterfall display?

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

11. - G3A10

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

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

12. - G3B07

What does LUF stand for?

Select	Answer
A	The Longest Universal Function for communications between two points
B	The Lowest Usable Frequency during a 24 hour period
C	The Longest Universal Function during a 24 hour period
D	The Lowest Usable Frequency for communications between two points

13. - G3C09

What type of radio wave propagation allows a signal to be detected at a distance too far for ground wave propagation but too near for normal sky-wave propagation?

Select	Answer
A	Sporadic-E skip
B	Scatter
C	Faraday rotation
D	Short-path skip

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

15. - G4B07

What signals are used to conduct a two-tone test?

Select	Answer
A	Two audio frequency range square wave signals of equal amplitude
B	Two audio signals of the same frequency shifted 90 degrees
C	Two swept frequency tones
D	Two non-harmonically related audio signals

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	Install an RF filter in series with the ground wire
D	Connect all equipment grounds together

17. - G4D09

What frequency range is occupied by a 3 kHz USB signal with the displayed carrier frequency set to 14.347 MHz?

Select	Answer
A	14.347 to 14.647 MHz
B	14.3455 to 14.3485 MHz
C	14.344 to 14.347 MHz
D	14.347 to 14.350 MHz

18. - G4E02

What is the purpose of a corona ball on a HF mobile antenna?

Select	Answer
A	To increase the "Q" of the antenna
B	To reduce high voltage discharge from the tip of the antenna
C	To reduce the chance of damage if the antenna should strike an object
D	To narrow the operating bandwidth of the antenna

19. - G5A11

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

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

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	2.4 watts
C	24 watts
D	6 watts

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 capacitor in series
D	A resistor in series

22. - G6A15

Which of the following is an advantage of an electrolytic capacitor?

Select	Answer
A	High capacitance for a given volume
B	Inexpensive RF capacitor
C	Tight tolerance
D	Much less leakage than any other type

23. - G6B14

Which of these connector types is commonly used for audio signals in Amateur Radio stations?

Select	Answer
A	PL-259
B	Type N
C	RCA Phono
D	BNC

24. - G7A10

Which symbol in figure G7-1 represents a Zener diode?

Select	Answer
A	Symbol 1
B	Symbol 11
C	Symbol 4
D	Symbol 5

25. - G7B07

What are the basic components of virtually all sine wave oscillators?

Select	Answer
A	An amplifier and a divider
B	A circulator and a filter operating in a feed-forward loop
C	A frequency multiplier and a mixer
D	A filter and an amplifier operating in a feedback loop

26. - G7C04

What circuit is used to combine signals from the IF amplifier and BFO and send the result to the AF amplifier in some single sideband receivers?

Select	Answer
A	IF filter
B	Balanced modulator
C	Product detector
D	RF oscillator

27. - G8A08

Which of the following is an effect of overmodulation?

Select	Answer
A	Excessive bandwidth
B	Insufficient bandwidth
C	Frequency drift
D	Insufficient audio

28. - G8B03

What is another term for the mixing of two RF signals?

Select	Answer
A	Heterodyning
B	Cancellation
C	Phase inverting
D	Synthesizing

29. - G8C10

How does forward error correction (FEC) allow the receiver to correct errors in received data packets?

Select	Answer
A	By using a parity bit with each character
B	By using the varicode character set
C	By transmitting redundant information with the data
D	By controlling transmitter output power for optimum signal strength

30. - G9A14

What is the interaction between high standing wave ratio (SWR) and transmission line loss?

Select	Answer
A	High SWR reduces the relative effect of transmission line loss
B	High SWR makes it difficult to measure transmission line loss
C	There is no interaction between transmission line loss and SWR
D	If a transmission line is lossy, high SWR will increase the loss

31. - G9B08

How does the feed point impedance of a 1/2 wave dipole change as the feed point is moved from the center toward the ends?

Select	Answer
A	It steadily increases
B	It peaks at about 1/8 wavelength from the end
C	It is unaffected by the location of the feed point
D	It steadily decreases

32. - G9C02

What is the approximate length of the driven element of a Yagi antenna?

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

33. - G9D03

At what height above ground is an NVIS antenna typically installed?

Select	Answer
A	Between 1/10 and 1/4 wavelength
B	Height is not critical as long as it is significantly more than 1/2 wavelength
C	As close to 1/2 wavelength as possible
D	As close to one wavelength as possible

34. - G0A03

How can you determine that your station complies with FCC RF exposure regulations?

Select	Answer
A	All of these choices are correct
B	By measurement of field strength using calibrated equipment
C	By calculation based on FCC OET Bulletin 65
D	By calculation based on computer modeling

35. - G0B03

Which size of fuse or circuit breaker would be appropriate to use with a circuit that uses AWG number 14 wiring?

Select	Answer
A	30 amperes
B	15 amperes
C	60 amperes
D	100 amperes

Figure G7-1