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. - G1A12

Which of the following applies when the FCC rules designate the Amateur Service as a secondary user on a band?

Select	Answer
A	Amateur stations are allowed to use the band only if they do not cause harmful interference to primary users
B	Amateur stations are allowed to use the band only during emergencies
C	Amateur stations must record the call sign of the primary service station before operating on a frequency assigned to that station
D	Amateur stations may only operate during specific hours of the day, while primary users are permitted 24 hour use of the band

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	Never
C	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
D	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

3. - G1C04

Which of the following limitations apply to transmitter power on every amateur band?

Select	Answer
A	Only the minimum power necessary to carry out the desired communications should be used
B	Power should be limited as necessary to avoid interference to another radio service on the frequency
C	Effective radiated power cannot exceed 1500 watts
D	Power must be limited to 200 watts when transmitting between 14.100 MHz and 14.150 MHz

4. - G1D04

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

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

5. - G1E07

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

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

6. - G2A09

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

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

7. - G2B02

What is the first thing you should do if you are communicating with another amateur station and hear a station in distress break in?

Select	Answer
A	Change to a different frequency
B	Immediately cease all transmissions
C	Continue your communication because you were on the frequency first
D	Acknowledge the station in distress and determine what assistance may be needed

8. - G2C10

What does the Q signal "QRN" mean?

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

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 conduct frequency coordination for amateur VHF repeaters
C	Amateur volunteers who conduct amateur licensing examinations
D	Amateur volunteers who use their station equipment to help civil defense organizations in times of emergency

10. - G2E03

What symptoms may result from other signals interfering with a PACTOR or WINMOR transmission?

Select	Answer
A	All of these choices are correct
B	Frequent retries or timeouts
C	Failure to establish a connection between stations
D	Long pauses in message transmission

11. - G3A07

At what point in the solar cycle does the 20-meter band usually support worldwide propagation during daylight hours?

Select	Answer
A	Only at the maximum point of the solar cycle
B	At the summer solstice
C	Only at the minimum point of the solar cycle
D	At any point in the solar cycle

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

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

14. - G4A08

What is the correct adjustment for the load or coupling control of a vacuum tube RF power amplifier?

Select	Answer
A	Minimum SWR on the antenna
B	Highest plate voltage while minimizing grid current
C	Minimum plate current without exceeding maximum allowable grid current
D	Maximum power output without exceeding maximum allowable plate current

15. - G4B04

What signal source is connected to the vertical input of an oscilloscope when checking the RF envelope pattern of a transmitted signal?

Select	Answer
A	The local oscillator of the transmitter
B	The attenuated RF output of the transmitter
C	The transmitter balanced mixer output
D	An external RF oscillator

16. - G4C12

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

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

17. - G4D03

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

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

18. - G4E09

What is the approximate open-circuit voltage from a fully illuminated silicon photovoltaic cell?

Select	Answer
A	0.02 VDC
B	1.38 VDC
C	0.2 VDC
D	0.5 VDC

19. - G5A04

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

Select	Answer
A	Conductance
B	Reluctance
C	Admittance
D	Reactance

20. - G5B01

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

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

21. - G5C14

Which of the following components should be added to an inductor to increase the inductance?

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

22. - G6A02

What is an advantage of the low internal resistance of nickel-cadmium batteries?

Select	Answer
A	High voltage
B	Rapid recharge
C	High discharge current
D	Long life

23. - G6B17

What is the general description of a DIN type connector?

Select	Answer
A	A special watertight connector for use in marine applications
B	A special connector for microwave interfacing
C	A family of multiple circuit connectors suitable for audio and control signals
D	A DC power connector rated for currents between 30 and 50 amperes

24. - G7A13

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

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

25. - G7B13

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

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

26. - G7C10

How is Digital Signal Processor filtering accomplished?

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

27. - G8A10

What is meant by the term flat-topping when referring to a single sideband phone transmission?

Select	Answer
A	Signal distortion caused by excessive drive
B	The transmitter's automatic level control (ALC) is properly adjusted
C	Signal distortion caused by insufficient collector current
D	The transmitter's carrier is properly suppressed

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. - G8C01

Which of the following digital modes is designed to operate at extremely low signal strength on the HF bands?

Select	Answer
A	FSK441 and Hellschreiber
B	RTTY
C	JT9 and JT65
D	Clover

30. - G9A03

What is the characteristic impedance of flat ribbon TV type twinlead?

Select	Answer
A	300 ohms
B	75 ohms
C	50 ohms
D	100 ohms

31. - G9B02

Which of the following is a common way to adjust the feed point impedance of a quarter wave ground plane vertical antenna to be approximately 50 ohms?

Select	Answer
A	Lengthen the radials
B	Slope the radials upward
C	Shorten the radials
D	Slope the radials downward

32. - G9C15

Approximately how long is each side of the reflector element of a quad antenna?

Select	Answer
A	Slightly less than 1/4 wavelength
B	Slightly more than 1/4 wavelength
C	Slightly more than 1/2 wavelength
D	Slightly less than 1/2 wavelength

33. - G9D06

Which of the following is an advantage of a log periodic antenna?

Select	Answer
A	Polarization diversity
B	Higher gain per element than a Yagi antenna
C	Harmonic suppression
D	Wide bandwidth

34. - G0A06

What precaution should be taken when installing a ground-mounted antenna?

Select	Answer
A	It should not be installed higher than you can reach
B	It should not be installed in a wet area
C	It should be installed such that it is protected against unauthorized access
D	It should limited to 10 feet in height

35. - G0B09

Why should soldered joints not be used with the wires that connect the base of a tower to a system of ground rods?

Select	Answer
A	Solder flux will prevent a low conductivity connection
B	The resistance of solder is too high
C	A soldered joint will likely be destroyed by the heat of a lightning strike
D	Solder has too high a dielectric constant to provide adequate lightning protection

Figure G7-1