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. - G1A14

In what ITU region is operation in the 7.175 to 7.300 MHz band permitted for a control operator holding an FCC issued General Class license?

Select	Answer
A	Region 1
B	Region 3
C	All three regions
D	Region 2

2. - G1B07

What are the restrictions on the use of abbreviations or procedural signals in the Amateur Service?

Select	Answer
A	They are not permitted
B	Only "Q" signals are permitted
C	They may be used if they do not obscure the meaning of a message
D	Only "10 codes" are permitted

3. - G1C02

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

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

4. - G1D04

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

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

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

6. - G2A11

What does the expression "CQ DX" usually indicate?

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

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 "QSY" on CW or if using phone, announce "the frequency is in use", then give your call and listen for a response
B	Send the letter "V" in Morse code several times and listen for a response or say "test" several times 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	KN
B	BK
C	AR
D	SK

9. - G2D04

Which of the following describes an azimuthal projection map?

Select	Answer
A	A map that shows the number of degrees longitude that an amateur satellite appears to move westward at the equator with each orbit
B	A map that shows true bearings and distances from a particular location
C	A map that shows accurate land masses
D	A map that shows the angle at which an amateur satellite crosses the equator

10. - G2E03

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

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

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	Only at the maximum point of the solar cycle
C	At any point in the solar cycle
D	Only at the minimum point of the solar cycle

12. - G3B05

What usually happens to radio waves with frequencies below the MUF and above the LUF when they are sent into the ionosphere?

Select	Answer
A	They are bent back to the Earth
B	They are amplified by interaction with the ionosphere
C	They pass through the ionosphere
D	They are bent and trapped in the ionosphere to circle the Earth

13. - G3C10

Which of the following might be an indication that signals heard on the HF bands are being received via scatter propagation?

Select	Answer
A	The signal is heard on a frequency above the Maximum Usable Frequency
B	The communication is during a sunspot maximum
C	The communication is during a sudden ionospheric disturbance
D	The signal is heard on a frequency below the Maximum Usable Frequency

14. - G4A11

Which of the following is a use for the IF shift control on a receiver?

Select	Answer
A	To change frequency rapidly
B	To avoid interference from stations very close to the receive frequency
C	To permit listening on a different frequency from that on which you are transmitting
D	To tune in stations that are slightly off frequency without changing your transmit frequency

15. - G4B13

What is a use for an antenna analyzer other than measuring the SWR of an antenna system?

Select	Answer
A	Determining the impedance of an unknown or unmarked coaxial cable
B	Measuring the front to back ratio of an antenna
C	Determining the gain of a directional antenna
D	Measuring the turns ratio of a power transformer

16. - G4C08

Which of the following would reduce RF interference caused by common-mode current on an audio cable?

Select	Answer
A	Placing a ferrite choke around the cable
B	Adding an additional insulating jacket to the cable
C	Adding shunt inductors to the conductors
D	Adding series capacitors to the conductors

17. - G4D07

How much must the power output of a transmitter be raised to change the S meter reading on a distant receiver from S8 to S9?

Select	Answer
A	Approximately 2 times
B	Approximately 4 times
C	Approximately 1.5 times
D	Approximately 8 times

18. - G4E05

Which of the following most limits the effectiveness of an HF mobile transceiver operating in the 75-meter band?

Select	Answer
A	The wire gauge of the DC power line to the transceiver
B	"Picket Fencing" signal variation
C	FCC rules limiting mobile output power on the 75-meter band
D	The antenna system

19. - G5A09

What unit is used to measure reactance?

Select	Answer
A	Ohm
B	Farad
C	Siemens
D	Ampere

20. - G5B06

What is the output PEP from a transmitter if an oscilloscope measures 200 volts peak-to-peak across a 50 ohm dummy load connected to the transmitter output?

Select	Answer
A	400 watts
B	353.5 watts
C	1.4 watts
D	100 watts

21. - G5C06

What is the RMS voltage across a 500-turn secondary winding in a transformer if the 2250-turn primary is connected to 120 VAC?

Select	Answer
A	5.9 volts
B	2370 volts
C	540 volts
D	26.7 volts

22. - G6A07

What are the stable operating points for a bipolar transistor used as a switch in a logic circuit?

Select	Answer
A	Its enhancement and depletion modes
B	Its saturation and cutoff regions
C	Its active region (between the cutoff and saturation regions)
D	Its peak and valley current points

23. - G6B14

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

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

24. - G7A08

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

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

25. - G7B06

What is a shift register?

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

26. - G7C10

How is Digital Signal Processor filtering accomplished?

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

27. - G8A01

How is an FSK signal generated?

Select	Answer
A	By changing an oscillator's frequency directly with a digital control signal
B	By using a transceiver's computer data interface protocol to change frequencies
C	By keying an FM transmitter with a sub-audible tone
D	By reconfiguring the CW keying input to act as a tone generator

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	60 kHz
B	416.7 Hz
C	5 kHz
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 the varicode character set
B	By using a parity bit with each character
C	By transmitting redundant information with the data
D	By controlling transmitter output power for optimum signal strength

30. - G9A01

Which of the following factors determine the characteristic impedance of a parallel conductor antenna feed line?

Select	Answer
A	The radius of the conductors and the frequency of the signal
B	The frequency of the signal and the length of the line
C	The distance between the centers of the conductors and the radius of the conductors
D	The distance between the centers of the conductors and the length of the line

31. - G9B01

What is one disadvantage of a directly fed random-wire HF antenna?

Select	Answer
A	It is more effective on the lower HF bands than on the higher bands
B	You may experience RF burns when touching metal objects in your station
C	It produces only vertically polarized radiation
D	It must be longer than 1 wavelength

32. - G9C06

What configuration of the loops of a two-element quad antenna must be used for the antenna to operate as a beam antenna, assuming one of the elements is used as a reflector?

Select	Answer
A	The driven element must be fed with a balun transformer
B	There must be an open circuit in the driven element at the point opposite the feed point
C	The reflector element must be approximately 5 percent longer than the driven element
D	The reflector element must be approximately 5 percent shorter than the driven element

33. - G9D03

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

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

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. - G0B12

What is the purpose of a power supply interlock?

Select	Answer
A	To prevent unauthorized changes to the circuit that would void the manufacturer's warranty
B	To ensure that dangerous voltages are removed if the cabinet is opened
C	To shut down the unit if it becomes too hot
D	To shut off the power supply if too much voltage is produced