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	14305 kHz
B	14005 kHz
C	14105 kHz
D	14405 kHz

2. - G1B03

Which of the following is a purpose of a beacon station as identified in the FCC rules?

Select	Answer
A	Automatic identification of repeaters
B	Identifying net frequencies
C	Transmission of bulletins of general interest to Amateur Radio licensees
D	Observation of propagation and reception

3. - G1C01

What is the maximum transmitting power an amateur station may use on 10.140 MHz?

Select	Answer
A	1000 watts PEP output
B	200 watts PEP output
C	2000 watts PEP output
D	1500 watts PEP output

4. - G1D02

What license examinations may you administer when you are an accredited VE holding a General Class operator license?

Select	Answer
A	Extra, General and Technician
B	General and Technician
C	General only
D	Technician only

5. - G1E06

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

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

6. - G2A06

Which of the following is an advantage when using single sideband as compared to other analog voice modes on the HF amateur bands?

Select	Answer
A	Less subject to interference from atmospheric static crashes
B	Ease of tuning on receive and immunity to impulse noise
C	Very high fidelity voice modulation
D	Less bandwidth used and greater power efficiency

7. - G2B07

Which of the following complies with good amateur practice when choosing a frequency on which to initiate a call?

Select	Answer
A	All of these choices are correct
B	Check to see if the channel is assigned to another station
C	Identify your station by transmitting your call sign at least 3 times
D	Follow the voluntary band plan for the operating mode you intend to use

8. - G2C05

What is the best speed to use when answering a CQ in Morse code?

Select	Answer
A	At the standard calling speed of 5 wpm
B	A slow speed until contact is established
C	The fastest speed at which you are comfortable copying
D	The speed at which the CQ was sent

9. - G2D10

What is QRP operation?

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

10. - G2E14

What could be wrong if you cannot decode an RTTY or other FSK signal even though it is apparently tuned in properly?

Select	Answer
A	You may be listening on the wrong sideband
B	The mark and space frequencies may be reversed
C	All of these choices are correct
D	You may have selected the wrong baud rate

11. - G3A15

How long does it take charged particles from coronal mass ejections to affect radio propagation on the Earth?

Select	Answer
A	4 to 8 minutes
B	20 to 40 hours
C	14 days
D	28 days

12. - G3B09

What is the approximate maximum distance along the Earth's surface that is normally covered in one hop using the F2 region?

Select	Answer
A	12,000 miles
B	1,200 miles
C	2,500 miles
D	180 miles

13. - G3C11

Which of the following antenna types will be most effective for skip communications on 40-meters during the day?

Select	Answer
A	A vertical antenna
B	A horizontal dipole placed between 1/8 and 1/4 wavelength above the ground
C	A left-hand circularly polarized antenna
D	A right-hand circularly polarized antenna

14. - G4A09

Why is a time delay sometimes included in a transmitter keying circuit?

Select	Answer
A	To allow time for a warning signal to be sent to other stations
B	To allow time for transmit-receive changeover operations to complete properly before RF output is allowed
C	To prevent stations from interfering with one another
D	To allow the transmitter power regulators to charge properly

15. - G4B11

Which of the following must be connected to an antenna analyzer when it is being used for SWR measurements?

Select	Answer
A	Receiver
B	Transmitter
C	Antenna and feed line
D	All of these choices are correct

16. - G4C11

Which of the following is a function of a digital signal processor?

Select	Answer
A	To increase antenna bandwidth
B	To provide adequate grounding
C	To increase antenna gain
D	To remove noise from received signals

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

18. - G4E01

What is the purpose of a capacitance hat on a mobile antenna?

Select	Answer
A	To electrically lengthen a physically short antenna
B	To allow automatic band changing
C	To increase the power handling capacity of a whip antenna
D	To allow remote tuning

19. - G5A08

Why is impedance matching important?

Select	Answer
A	To ensure that there is less resistance than reactance in the circuit
B	So the source can deliver maximum power to the load
C	To ensure that the resistance and reactance in the circuit are equal
D	So the load will draw minimum power from the source

20. - G5B10

What percentage of power loss would result from a transmission line loss of 1 dB?

Select	Answer
A	20.5 percent
B	10.9 percent
C	25.9 percent
D	12.2 percent

21. - G5C03

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

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

22. - G6A18

What is an advantage of using a ferrite core toroidal inductor?

Select	Answer
A	Most of the magnetic field is contained in the core
B	The magnetic properties of the core may be optimized for a specific range of frequencies
C	All of these choices are correct
D	Large values of inductance may be obtained

23. - G6B08

How is an LED biased when emitting light?

Select	Answer
A	At the Zener voltage
B	Reverse Biased
C	Forward Biased
D	Beyond cutoff

24. - G7A02

Which of the following components are used in a power supply filter network?

Select	Answer
A	Diodes
B	Capacitors and inductors
C	Quartz crystals
D	Transformers and transducers

25. - G7B01

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

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

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	Balanced modulator
B	RF oscillator
C	IF filter
D	Product detector

27. - G8A06

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

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

28. - G8B01

What receiver stage combines a 14.250 MHz input signal with a 13.795 MHz oscillator signal to produce a 455 kHz intermediate frequency (IF) signal?

Select	Answer
A	Discriminator
B	VFO
C	Mixer
D	BFO

29. - G8C07

How does the receiving station respond to an ARQ data mode packet containing errors?

Select	Answer
A	It terminates the contact
B	It requests a change in transmitting protocol
C	It requests the packet be retransmitted
D	It sends the packet back to the transmitting station

30. - G9A15

What is the effect of transmission line loss on SWR measured at the input to the line?

Select	Answer
A	The higher the transmission line loss, the more the SWR will read artificially high
B	The higher the transmission line loss, the more accurate the SWR measurement will be
C	Transmission line loss does not affect the SWR measurement
D	The higher the transmission line loss, the more the SWR will read artificially low

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

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	About the same
B	3 dB higher
C	3 dB lower
D	2.54 dB higher

33. - G9D07

Which of the following describes a log periodic antenna?

Select	Answer
A	Gain varies logarithmically as a function of frequency
B	SWR varies periodically as a function of boom length
C	Impedance varies periodically as a function of frequency
D	Length and spacing of the elements increase logarithmically from one end of the boom to the other

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

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	60 amperes
C	15 amperes
D	100 amperes