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. - G1A09

Which of the following frequencies is within the General Class portion of the 15-meter band?

Select	Answer
A	18155 kHz
B	14250 kHz
C	21300 kHz
D	24900 kHz

2. - G1B08

When choosing a transmitting frequency, what should you do to comply with good amateur practice?

Select	Answer
A	Monitor the frequency before transmitting
B	All of these choices are correct
C	Follow generally accepted band plans agreed to by the Amateur Radio community
D	Insure that the frequency and mode selected are within your license class privileges

3. - G1C05

Which of the following is a limitation on transmitter power on the 28 MHz band for a General Class control operator?

Select	Answer
A	1000 watts PEP output
B	100 watts PEP output
C	1500 watts PEP output
D	2000 watts PEP output

4. - G1D03

On which of the following band segments may you operate if you are a Technician Class operator and have a CSCE for General Class privileges?

Select	Answer
A	On any General or Technician Class band segment
B	Only on the Technician band segments until your license arrives in the mail
C	Only the Technician band segments until your upgrade is posted in the FCC database
D	On any General or Technician Class band segment except 30-meters and 60-meters

5. - G1E07

With which foreign countries is third party traffic prohibited, except for messages directly involving emergencies or disaster relief communications?

Select	Answer
A	Every foreign country, unless there is a third party agreement in effect with that country
B	Any country which is not a member of the International Amateur Radio Union (IARU)
C	Countries in ITU Region 2
D	Countries in ITU Region 1

6. - G2A05

Which mode of voice communication is most commonly used on the HF amateur bands?

Select	Answer
A	Phase modulation
B	Double sideband
C	Single sideband
D	Frequency modulation

7. - G2B02

What is the first thing you should do if you are communicating with another amateur station and hear a station in distress break in?

Select	Answer
A	Change to a different frequency
B	Acknowledge the station in distress and determine what assistance may be needed
C	Immediately cease all transmissions
D	Continue your communication because you were on the frequency first

8. - G2C03

What does it mean when a CW operator sends "KN" at the end of a transmission?

Select	Answer
A	Listening for novice stations
B	Operating full break-in
C	Listening only for a specific station or stations
D	Closing station now

9. - G2D03

What skills learned during hidden transmitter hunts are of help to the Amateur Auxiliary?

Select	Answer
A	Hunters have an opportunity to transmit on non-amateur frequencies
B	Direction finding used to locate stations violating FCC Rules
C	Identification of out of band operation
D	Identification of different call signs

10. - G2E08

In what segment of the 20-meter band are most PSK31 operations commonly found?

Select	Answer
A	At the top of the SSB phone segment, near 14.325 MHz
B	In the middle of the CW segment, near 14.100 MHz
C	Below the RTTY segment, near 14.070 MHz
D	At the bottom of the slow-scan TV segment, near 14.230 MHz

11. - G3A14

How are radio communications usually affected by the charged particles that reach the Earth from solar coronal holes?

Select	Answer
A	VHF/UHF ducting is improved
B	HF communications are improved
C	HF communications are disturbed
D	VHF/UHF ducting is disturbed

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

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

14. - G4A09

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

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

15. - G4B01

What item of test equipment contains horizontal and vertical channel amplifiers?

Select	Answer
A	A signal generator
B	An ammeter
C	An oscilloscope
D	An ohmmeter

16. - G4C11

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

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

17. - G4D04

What does an S meter measure?

Select	Answer
A	Transmitter power output
B	Impedance
C	Received signal strength
D	Conductance

18. - G4E03

Which of the following direct, fused power connections would be the best for a 100 watt HF mobile installation?

Select	Answer
A	To the alternator or generator using resistor wire
B	To the battery using heavy gauge wire
C	To the battery using resistor wire
D	To the alternator or generator using heavy gauge wire

19. - G5A08

Why is impedance matching important?

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

20. - G5B03

How many watts of electrical power are used if 400 VDC is supplied to an 800 ohm load?

Select	Answer
A	200 watts
B	0.5 watts
C	400 watts
D	3200 watts

21. - G5C14

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

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

22. - G6A07

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

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

23. - G6B18

What is a type SMA connector?

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

24. - G7A07

What is the output waveform of an unfiltered full-wave rectifier connected to a resistive load?

Select	Answer
A	A steady DC voltage
B	A series of DC pulses at twice the frequency of the AC input
C	A sine wave at half the frequency of the AC input
D	A series of DC pulses at the same frequency as the AC input

25. - G7B07

What are the basic components of virtually all sine wave oscillators?

Select	Answer
A	A filter and an amplifier operating in a feedback loop
B	An amplifier and a divider
C	A circulator and a filter operating in a feed-forward loop
D	A frequency multiplier and a mixer

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. - G8A05

What type of modulation varies the instantaneous power level of the RF signal?

Select	Answer
A	Frequency modulation
B	Amplitude modulation
C	Frequency shift keying
D	Phase modulation

28. - G8B05

What is the approximate bandwidth of a PACTOR3 signal at maximum data rate?

Select	Answer
A	2300 Hz
B	500 Hz
C	31.5 Hz
D	1800 Hz

29. - G8C05

In the PACTOR protocol, what is meant by an NAK response to a transmitted packet?

Select	Answer
A	The receiver is requesting the packet be retransmitted
B	The receiver is reporting the packet was received without error
C	The receiver is busy decoding the packet
D	The entire file has been received correctly

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

31. - G9B06

Where should the radial wires of a ground-mounted vertical antenna system be placed?

Select	Answer
A	At the center of the antenna
B	On the surface of the Earth or buried a few inches below the ground
C	Parallel to the antenna element
D	As high as possible above the ground

32. - G9C03

Which statement about a three-element, single-band Yagi antenna is true?

Select	Answer
A	The director is normally the shortest element
B	The driven element is the longest element
C	Low feed point impedance increases bandwidth
D	The reflector is normally the shortest element

33. - G9D02

Which of the following is an advantage of an NVIS antenna?

Select	Answer
A	All of these choices are correct
B	Low vertical angle radiation for working stations out to ranges of several thousand kilometers
C	High forward gain
D	High vertical angle radiation for working stations within a radius of a few hundred kilometers

34. - G0A03

How can you determine that your station complies with FCC RF exposure regulations?

Select	Answer
A	By calculation based on computer modeling
B	All of these choices are correct
C	By calculation based on FCC OET Bulletin 65
D	By measurement of field strength using calibrated equipment

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 16
C	AWG number 20
D	AWG number 8