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. - G1A01

On which of the following bands is a General Class license holder granted all amateur frequency privileges?

Select	Answer
A	160, 30, 17, 15, 12, and 10 meters
B	160, 80, 40, and 10 meters
C	60, 20, 17, and 12 meters
D	160, 60, 30, 17, 12, and 10 meters

2. - G1B10

What is the power limit for beacon stations?

Select	Answer
A	20 watts PEP output
B	200 watts PEP output
C	100 watts PEP output
D	10 watts PEP output

3. - G1C07

What is the maximum symbol rate permitted for RTTY or data emission transmission on the 20-meter band?

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

4. - G1D08

Which of the following criteria must be met for a non-U.S. citizen to be an accredited Volunteer Examiner?

Select	Answer
A	The person must hold an FCC granted Amateur Radio license of General Class or above
B	None of these choices is correct; a non-U.S. citizen cannot be a Volunteer Examiner
C	The person must be a resident of the U.S. for a minimum of 5 years
D	The person's home citizenship must be in ITU region 2

5. - G1E06

Which of the following applies in the event of interference between a coordinated repeater and an uncoordinated repeater?

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

6. - G2A08

Which of the following is a recommended way to break into a contact when using phone?

Select	Answer
A	Say "Break Break Break" and wait for a response
B	Say "QRZ" several times followed by your call sign
C	Say "CQ" followed by the call sign of either station
D	Say your call sign during a break between transmissions by the other stations

7. - G2B06

What is a practical way to avoid harmful interference on an apparently clear frequency before calling CQ on CW or phone?

Select	Answer
A	Send the letter "V" in Morse code several times and listen for a response or say "test" several times and listen for a response
B	Send "QSY" on CW or if using phone, announce "the frequency is in use", then give your call and listen for a response
C	Send "QRL?" on CW, followed by your call sign; or, if using phone, ask if the frequency is in use, followed by your call sign
D	Listen for 2 minutes before calling CQ

8. - G2C08

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

Select	Answer
A	SK
B	AR
C	KN
D	BK

9. - G2D11

Which HF antenna would be the best to use for minimizing interference?

Select	Answer
A	An isotropic antenna
B	An omnidirectional antenna
C	A directional antenna
D	A quarter-wave vertical antenna

10. - G2E11

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

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

11. - G3A13

What does the A-index indicate?

Select	Answer
A	The long term stability of the Earth's geomagnetic field
B	The amount of polarization of the Sun's electric field
C	The solar radio flux at Boulder, Colorado
D	The relative position of sunspots on the surface of the Sun

12. - G3B12

What factor or factors affect the MUF?

Select	Answer
A	Time of day and season
B	Solar radiation and ionospheric disturbances
C	Path distance and location
D	All of these choices are correct

13. - G3C05

Why is long distance communication on the 40-meter, 60-meter, 80-meter and 160-meter bands more difficult during the day?

Select	Answer
A	The F layer is unstable during daylight hours
B	The E layer is unstable during daylight hours
C	The D layer absorbs signals at these frequencies during daylight hours
D	The F layer absorbs signals at these frequencies during daylight hours

14. - G4A10

What is the purpose of an electronic keyer?

Select	Answer
A	Automatic transmit/receive switching
B	Automatic generation of strings of dots and dashes for CW operation
C	Computer interface for PSK and RTTY operation
D	VOX operation

15. - G4B06

What is an advantage of a digital voltmeter as compared to an analog voltmeter?

Select	Answer
A	Better for RF measurements
B	Better for measuring computer circuits
C	Faster response
D	Better precision for most uses

16. - G4C10

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

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

17. - G4D01

What is the purpose of a speech processor as used in a modern transceiver?

Select	Answer
A	Increase the intelligibility of transmitted phone signals during poor conditions
B	Prevent distortion of voice signals
C	Increase transmitter bass response for more natural sounding SSB signals
D	Decrease high-frequency voice output to prevent out of band operation

18. - G4E09

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

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

19. - G5A11

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

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

20. - G5B05

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

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

21. - G5C03

Which of the following components should be added to an existing resistor to increase the resistance?

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

22. - G6A14

Which of the following is an advantage of ceramic capacitors as compared to other types of capacitors?

Select	Answer
A	Tight tolerance
B	Comparatively low cost
C	High stability
D	High capacitance for given volume

23. - G6B18

What is a type SMA connector?

Select	Answer
A	A type of push-on connector intended for high voltage applications
B	A large bayonet connector usable at power levels in excess of 1 KW
C	A small threaded connector suitable for signals up to several GHz
D	A connector designed for serial multiple access signals

24. - G7A08

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

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

25. - G7B01

Complex digital circuitry can often be replaced by what type of integrated circuit?

Select	Answer
A	Window comparator
B	Microcontroller
C	Phase detector
D	Charge-coupled device

26. - G7C03

What circuit is used to process signals from the RF amplifier and local oscillator then send the result to the IF filter in a superheterodyne receiver?

Select	Answer
A	IF amplifier
B	Detector
C	Balanced modulator
D	Mixer

27. - G8A08

Which of the following is an effect of overmodulation?

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

28. - G8B07

What is the frequency deviation for a 12.21 MHz reactance modulated oscillator in a 5 kHz deviation, 146.52 MHz FM phone transmitter?

Select	Answer
A	5 kHz
B	60 kHz
C	416.7 Hz
D	101.75 Hz

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 controlling transmitter output power for optimum signal strength
D	By transmitting redundant information with the data

30. - G9A09

What standing wave ratio will result when connecting a 50 ohm feed line to a non-reactive load having 200 ohm impedance?

Select	Answer
A	1:4
B	2:1
C	4:1
D	1:2

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

32. - G9C01

Which of the following would increase the bandwidth of a Yagi antenna?

Select	Answer
A	Loading coils in series with the element
B	Closer element spacing
C	Tapered-diameter elements
D	Larger diameter elements

33. - G9D03

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

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

34. - G0A02

Which of the following properties is important in estimating whether an RF signal exceeds the maximum permissible exposure (MPE)?

Select	Answer
A	Its frequency
B	Its duty cycle
C	Its power density
D	All of these choices are correct

35. - G0B02

What is the minimum wire size that may be safely used for a circuit that draws up to 20 amperes of continuous current?

Select	Answer
A	AWG number 12
B	AWG number 8
C	AWG number 16
D	AWG number 20