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, 60, 30, 17, 12, and 10 meters
C	60, 20, 17, and 12 meters
D	160, 80, 40, and 10 meters

2. - G1B06

When is an amateur station permitted to transmit secret codes?

Select	Answer
A	To control a space station
B	During a declared communications emergency
C	Only with Special Temporary Authorization from the FCC
D	Only when the information is of a routine, personal nature

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

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

5. - G1E05

What types of messages for a third party in another country may be transmitted by an amateur station?

Select	Answer
A	Any message, as long as the amateur operator is not paid
B	Any messages, as long as the text of the message is recorded in the station log
C	Only messages for other licensed amateurs
D	Only messages relating to Amateur Radio or remarks of a personal character, or messages relating to emergencies or disaster relief

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

8. - G2C11

What does the Q signal "QRV" mean?

Select	Answer
A	There is interference on the frequency
B	I am quitting for the day
C	I am ready to receive messages
D	You are sending too fast

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 the angle at which an amateur satellite crosses the equator
D	A map that shows accurate land masses

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

12. - G3B01

How might a sky-wave signal sound if it arrives at your receiver by both short path and long path propagation?

Select	Answer
A	Periodic fading approximately every 10 seconds
B	Signal strength increased by 3 dB
C	A well-defined echo might be heard
D	The signal might be cancelled causing severe attenuation

13. - G3C06

What is a characteristic of HF scatter signals?

Select	Answer
A	They have very large swings in signal strength
B	They have a wavering sound
C	They have high intelligibility
D	All of these choices are correct

14. - G4A13

What is one reason to use the attenuator function that is present on many HF transceivers?

Select	Answer
A	To slow down received CW signals for better copy
B	To reduce signal overload due to strong incoming signals
C	To reduce the transmitter power when driving a linear amplifier
D	To reduce power consumption when operating from batteries

15. - G4B03

Which of the following is the best instrument to use when checking the keying waveform of a CW transmitter?

Select	Answer
A	A field strength meter
B	A sidetone monitor
C	An oscilloscope
D	A wavemeter

16. - G4C13

Which of the following can perform automatic notching of interfering carriers?

Select	Answer
A	A noise limiter
B	A Digital Signal Processor (DSP) filter
C	Bandpass tuning
D	Balanced mixing

17. - G4D11

How close to the upper edge of the 20-meter General Class band should your displayed carrier frequency be when using 3 kHz wide USB?

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

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	The antenna system
C	"Picket Fencing" signal variation
D	FCC rules limiting mobile output power on the 75-meter band

19. - G5A03

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

Select	Answer
A	Reluctance
B	Admittance
C	Reactance
D	Conductance

20. - G5B07

What value of an AC signal produces the same power dissipation in a resistor as a DC voltage of the same value?

Select	Answer
A	The peak value
B	The reciprocal of the RMS value
C	The RMS value
D	The peak-to-peak value

21. - G5C01

What causes a voltage to appear across the secondary winding of a transformer when an AC voltage source is connected across its primary winding?

Select	Answer
A	Displacement current coupling
B	Mutual inductance
C	Capacitive coupling
D	Mutual capacitance

22. - G6A05

What is the approximate junction threshold voltage of a conventional silicon diode?

Select	Answer
A	0.1 volt
B	0.3 volts
C	0.7 volts
D	1.0 volts

23. - G6B01

Which of the following is an analog integrated circuit?

Select	Answer
A	Frequency Counter
B	Microprocessor
C	Linear voltage regulator
D	NAND Gate

24. - G7A12

Which symbol in Figure G7-1 represents a multiple-winding transformer?

Select	Answer
A	Symbol 1
B	Symbol 4
C	Symbol 6
D	Symbol 7

25. - G7B05

How many states does a 3-bit binary counter have?

Select	Answer
A	8
B	16
C	3
D	6

26. - G7C07

What is the simplest combination of stages that implement a superheterodyne receiver?

Select	Answer
A	HF oscillator, prescaler, audio amplifier
B	HF oscillator, mixer, detector
C	RF amplifier, mixer, IF discriminator
D	RF amplifier, detector, audio amplifier

27. - G8A10

What is meant by the term flat-topping when referring to a single sideband phone transmission?

Select	Answer
A	The transmitter's carrier is properly suppressed
B	Signal distortion caused by excessive drive
C	The transmitter's automatic level control (ALC) is properly adjusted
D	Signal distortion caused by insufficient collector current

28. - G8B05

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

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

29. - G8C08

Which of the following statements is true about PSK31?

Select	Answer
A	Higher power is needed as compared to RTTY for similar error rates
B	Upper case letters make the signal stronger
C	Upper case letters use longer Varicode signals and thus slow down transmission
D	Varicode Error Correction is used to ensure accurate message reception

30. - G9A01

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

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

31. - G9B11

What is the approximate length for a 1/2 wave dipole antenna cut for 3.550 MHz?

Select	Answer
A	263 feet
B	84 feet
C	131 feet
D	42 feet

32. - G9C07

What does "front-to-back ratio" mean in reference to a Yagi antenna?

Select	Answer
A	The number of directors versus the number of reflectors
B	The relative position of the driven element with respect to the reflectors and directors
C	The ratio of forward gain to dipole gain
D	The power radiated in the major radiation lobe compared to the power radiated in exactly the opposite direction

33. - G9D05

What is an advantage of vertical stacking of horizontally polarized Yagi antennas?

Select	Answer
A	It narrows the main lobe in azimuth
B	It narrows the main lobe in elevation
C	It allows simultaneous vertical and horizontal polarization
D	It allows quick selection of vertical or horizontal polarization

34. - G0A01

What is one way that RF energy can affect human body tissue?

Select	Answer
A	It causes radiation poisoning
B	It causes the blood count to reach a dangerously low level
C	It heats body tissue
D	It cools body tissue

35. - G0B11

Which of the following is good practice for lightning protection grounds?

Select	Answer
A	They must be bonded to all buried water and gas lines
B	Bends in ground wires must be made as close as possible to a right angle
C	Lightning grounds must be connected to all ungrounded wiring
D	They must be bonded together with all other grounds

Figure G7-1