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. - G1A04

Which of the following amateur bands is restricted to communication on only specific channels, rather than frequency ranges?

Select	Answer
A	11 meters
B	30 meters
C	12 meters
D	60 meters

2. - G1B02

With which of the following conditions must beacon stations comply?

Select	Answer
A	A beacon station may not use automatic control
B	There must be no more than one beacon signal transmitting in the same band from the same station location
C	The frequency must be posted on the Internet or published in a national periodical
D	The frequency must be coordinated with the National Beacon Organization

3. - G1C06

Which of the following is a limitation on transmitter power on the 1.8 MHz band?

Select	Answer
A	1500 watts PEP output
B	1200 watts PEP output
C	1000 watts PEP output
D	200 watts PEP output

4. - G1D07

Volunteer Examiners are accredited by what organization?

Select	Answer
A	The Universal Licensing System
B	The Federal Communications Commission
C	A Volunteer Examiner Coordinator
D	The Wireless Telecommunications Bureau

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 uncoordinated repeater has primary responsibility to resolve the interference
B	The frequency coordinator bears primary responsibility to resolve the interference
C	Both repeater licensees share equal responsibility to resolve the interference
D	The licensee of the coordinated repeater has primary responsibility to resolve the interference

6. - G2A04

Which mode is most commonly used for voice communications on the 17-meter and 12-meter bands?

Select	Answer
A	Double sideband
B	Upper sideband
C	Vestigial sideband
D	Lower sideband

7. - G2B05

What is the customary minimum frequency separation between SSB signals under normal conditions?

Select	Answer
A	Approximately 3 kHz
B	Approximately 6 kHz
C	Approximately 10 kHz
D	Between 150 and 500 Hz

8. - G2C08

What prosign is sent to indicate the end of a formal message when using CW?

Select	Answer
A	SK
B	BK
C	KN
D	AR

9. - G2D10

What is QRP operation?

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

10. - G2E13

Which communication system sometimes uses the Internet to transfer messages?

Select	Answer
A	Winlink
B	Skywarn
C	ARES
D	RTTY

11. - G3A07

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

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

12. - G3B08

What does MUF stand for?

Select	Answer
A	The Maximum Usable Frequency during a 24 hour period
B	The Maximum Usable Frequency for communications between two points
C	The Minimum Usable Frequency for communications between two points
D	The Minimum Usable Frequency during a 24 hour period

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	Sporadic-E skip
C	Scatter
D	Faraday rotation

14. - G4A07

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

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

15. - G4B10

Which of the following can be determined with a directional wattmeter?

Select	Answer
A	Standing wave ratio
B	Radio wave propagation
C	RF interference
D	Antenna front-to-back ratio

16. - G4C13

Which of the following can perform automatic notching of interfering carriers?

Select	Answer
A	A Digital Signal Processor (DSP) filter
B	Bandpass tuning
C	A noise limiter
D	Balanced mixing

17. - G4D10

How close to the lower edge of the 40-meter General Class phone segment should your displayed carrier frequency be when using 3 kHz wide LSB?

Select	Answer
A	At least 3 kHz above the edge of the segment
B	At least 3 kHz below the edge of the segment
C	Your displayed carrier frequency may be set at the edge of the segment
D	At least 1 kHz above the edge of the segment

18. - G4E02

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

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

19. - G5A04

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

Select	Answer
A	Admittance
B	Reactance
C	Reluctance
D	Conductance

20. - G5B05

How many watts are dissipated when a current of 7.0 milliamperes flows through 1.25 kilohms resistance?

Select	Answer
A	Approximately 61 milliwatts
B	Approximately 61 watts
C	Approximately 11 milliwatts
D	Approximately 11 watts

21. - G5C01

What causes a voltage to appear across the secondary winding of a transformer when an AC voltage source is connected across its primary winding?

Select	Answer
A	Mutual inductance
B	Mutual capacitance
C	Capacitive coupling
D	Displacement current coupling

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

23. - G6B07

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

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

24. - G7A12

Which symbol in Figure G7-1 represents a multiple-winding transformer?

Select	Answer
A	Symbol 7
B	Symbol 6
C	Symbol 4
D	Symbol 1

25. - G7B06

What is a shift register?

Select	Answer
A	An array of operational amplifiers used for tri-state arithmetic operations
B	A digital mixer
C	An analog mixer
D	A clocked array of circuits that passes data in steps along the array

26. - G7C01

Which of the following is used to process signals from the balanced modulator then send them to the mixer in some single sideband phone transmitters?

Select	Answer
A	Filter
B	IF amplifier
C	RF amplifier
D	Carrier oscillator

27. - G8A06

What is one advantage of carrier suppression in a single sideband phone transmission versus full carrier amplitude modulation?

Select	Answer
A	Audio fidelity is improved
B	Simpler receiving equipment can be used
C	Available transmitter power can be used more effectively
D	Greater modulation percentage is obtainable with lower distortion

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 is required by FCC rules
C	It improves impedance matching of the antenna
D	It minimizes power consumption in the receiver

29. - G8C11

How are the two separate frequencies of a Frequency Shift Keyed (FSK) signal identified?

Select	Answer
A	Mark and Space
B	On and Off
C	High and Low
D	Dot and Dash

30. - G9A11

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

Select	Answer
A	2:1
B	0:0
C	50:50
D	1:1

31. - G9B11

What is the approximate length for a 1/2 wave dipole antenna cut for 3.550 MHz?

Select	Answer
A	84 feet
B	42 feet
C	131 feet
D	263 feet

32. - G9C16

How does the gain of a two-element delta-loop beam compare to the gain of a two-element quad antenna?

Select	Answer
A	3 dB higher
B	2.54 dB higher
C	3 dB lower
D	About the same

33. - G9D06

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

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

34. - G0A10

What is one thing that can be done if evaluation shows that a neighbor might receive more than the allowable limit of RF exposure from the main lobe of a directional antenna?

Select	Answer
A	Take precautions to ensure that the antenna cannot be pointed in their direction
B	Use an antenna with a higher front-to-back ratio
C	Post a warning sign that is clearly visible to the neighbor
D	Change to a non-polarized antenna with higher gain

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	100 amperes
C	15 amperes
D	60 amperes

Figure G7-1