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. - G1A08

Which of the following frequencies is within the General Class portion of the 80-meter band?

Select	Answer
A	3560 kHz
B	1855 kHz
C	2560 kHz
D	3650 kHz

2. - G1B11

How does the FCC require an amateur station to be operated in all respects not specifically covered by the Part 97 rules?

Select	Answer
A	All of these choices are correct
B	In conformance with good engineering and good amateur practice
C	In conformance with the rules of the IARU
D	In conformance with Amateur Radio custom

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	1500 watts PEP output
C	200 watts PEP output
D	2000 watts PEP output

4. - G1D06

When must you add the special identifier "AG" after your call sign if you are a Technician Class licensee and have a CSCE for General Class operator privileges, but the FCC has not yet posted your upgrade on its website ?

Select	Answer
A	A special identifier is not required as long as your General Class license application has been filed with the FCC
B	Whenever you operate using Technician frequency privileges
C	Whenever you operate on any amateur frequency
D	Whenever you operate using General Class frequency privileges

5. - G1E08

Which of the following is a requirement for a non-licensed person to communicate with a foreign Amateur Radio station from a station with an FCC-granted license at which an FCC licensed control operator is present?

Select	Answer
A	Information must be exchanged in English
B	All of these choices are correct
C	The control operator must have at least a General Class license
D	The foreign amateur station must be in a country with which the United States has a third party agreement

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	Vestigial sideband
C	Lower sideband
D	Upper sideband

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	Listen for 2 minutes before calling CQ
C	Send "QSY" on CW or if using phone, announce "the frequency is in use", then give your call and listen for a response
D	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

8. - G2C05

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

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

9. - G2D11

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

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

10. - G2E05

What is the standard sideband used to generate a JT65 or JT9 digital signal when using AFSK in any amateur band?

Select	Answer
A	LSB
B	SSB
C	USB
D	DSB

11. - G3A09

What effect does a high sunspot number have on radio communications?

Select	Answer
A	Long-distance communication in the upper HF and lower VHF range is enhanced
B	Microwave communications become unstable
C	High-frequency radio signals become weak and distorted
D	Frequencies above 300 MHz become usable for long-distance communication

12. - G3B03

Which of the following applies when selecting a frequency for lowest attenuation when transmitting on HF?

Select	Answer
A	Select a frequency just below the MUF
B	Select a frequency just below the critical frequency
C	Select a frequency just above the critical frequency
D	Select a frequency just above the LUF

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

14. - G4A01

What is the purpose of the "notch filter" found on many HF transceivers?

Select	Answer
A	To eliminate receiver interference from impulse noise sources
B	To enhance the reception of a specific frequency on a crowded band
C	To reduce interference from carriers in the receiver passband
D	To restrict the transmitter voice bandwidth

15. - G4B06

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

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

16. - G4C05

What might be the problem if you receive an RF burn when touching your equipment while transmitting on an HF band, assuming the equipment is connected to a ground rod?

Select	Answer
A	Insulated wire has been used for the ground wire
B	The ground rod is resonant
C	The ground wire has high impedance on that frequency
D	Flat braid rather than round wire has been used for the ground wire

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

18. - G4E06

What is one disadvantage of using a shortened mobile antenna as opposed to a full size antenna?

Select	Answer
A	Short antennas can only receive circularly polarized signals
B	Operating bandwidth may be very limited
C	Harmonic radiation may increase
D	Short antennas are more likely to cause distortion of transmitted signals

19. - G5A03

Which of the following causes opposition to the flow of alternating current in an inductor?

Select	Answer
A	Reactance
B	Conductance
C	Reluctance
D	Admittance

20. - G5B11

What is the ratio of peak envelope power to average power for an unmodulated carrier?

Select	Answer
A	1.00
B	2.00
C	1.414
D	0.707

21. - G5C14

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

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

22. - G6A12

What is the primary purpose of a screen grid in a vacuum tube?

Select	Answer
A	To increase the control grid resistance
B	To reduce grid-to-plate capacitance
C	To increase efficiency
D	To decrease plate resistance

23. - G6B14

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

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

24. - G7A06

What portion of the AC cycle is converted to DC by a full-wave rectifier?

Select	Answer
A	270 degrees
B	90 degrees
C	360 degrees
D	180 degrees

25. - G7B06

What is a shift register?

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

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	RF oscillator
B	IF filter
C	Product detector
D	Balanced modulator

27. - G8A03

What is the name of the process that changes the instantaneous frequency of an RF wave to convey information?

Select	Answer
A	Frequency transformation
B	Frequency convolution
C	Frequency conversion
D	Frequency modulation

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	Mixer interference
B	Quadrature noise
C	Image response
D	Intermediate interference

29. - G8C12

Which type of code is used for sending characters in a PSK31 signal?

Select	Answer
A	Binary
B	Volumetric
C	Viterbi
D	Varicode

30. - G9A15

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

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

31. - G9B01

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

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

32. - G9C01

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

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

33. - G9D08

Why is a Beverage antenna not used for transmitting?

Select	Answer
A	It has high losses compared to other types of antennas
B	It has poor directivity
C	Its impedance is too low for effective matching
D	All of these choices are correct

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	Change to a non-polarized antenna with higher gain
D	Post a warning sign that is clearly visible to the neighbor

35. - G0B01

Which wire or wires in a four-conductor connection should be attached to fuses or circuit breakers in a device operated from a 240 VAC single phase source?

Select	Answer
A	Only the two wires carrying voltage
B	Only the ground wire
C	Only the neutral wire
D	All wires