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, 60, 30, 17, 12, and 10 meters
B	60, 20, 17, and 12 meters
C	160, 30, 17, 15, 12, and 10 meters
D	160, 80, 40, and 10 meters

2. - G1B01

What is the maximum height above ground to which an antenna structure may be erected without requiring notification to the FAA and registration with the FCC, provided it is not at or near a public use airport?

Select	Answer
A	100 feet
B	300 feet
C	50 feet
D	200 feet

3. - G1C02

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

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

4. - G1D07

Volunteer Examiners are accredited by what organization?

Select	Answer
A	A Volunteer Examiner Coordinator
B	The Wireless Telecommunications Bureau
C	The Federal Communications Commission
D	The Universal Licensing System

5. - G1E02

When may a 10-meter repeater retransmit the 2-meter signal from a station having a Technician Class control operator?

Select	Answer
A	Only during an FCC declared general state of communications emergency
B	Under no circumstances
C	Only if the station on 10-meters is operating under a Special Temporary Authorization allowing such retransmission
D	Only if the 10-meter repeater control operator holds at least a General Class license

6. - G2A07

Which of the following statements is true of the single sideband voice mode?

Select	Answer
A	Only one sideband and the carrier are transmitted; the other sideband is suppressed
B	Only one sideband is transmitted; the other sideband and carrier are suppressed
C	SSB is the only voice mode that is authorized on the 160-meter, 75-meter and 40-meter amateur bands
D	SSB is the only voice mode that is authorized on the 20-meter, 15-meter, and 10-meter amateur bands

7. - G2B05

What is the customary minimum frequency separation between SSB signals under normal conditions?

Select	Answer
A	Approximately 10 kHz
B	Approximately 3 kHz
C	Between 150 and 500 Hz
D	Approximately 6 kHz

8. - G2C11

What does the Q signal "QRV" mean?

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

9. - G2D02

Which of the following are objectives of the Amateur Auxiliary?

Select	Answer
A	To conduct efficient and orderly amateur licensing examinations
B	To coordinate repeaters for efficient and orderly spectrum usage
C	To encourage self-regulation and compliance with the rules by radio amateur operators
D	To provide emergency and public safety communications

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	USB
B	LSB
C	SSB
D	DSB

11. - G3A12

What does the K-index indicate?

Select	Answer
A	The stability of the Sun's magnetic field
B	The short term stability of the Earth's magnetic field
C	The solar radio flux at Boulder, Colorado
D	The relative position of sunspots on the surface of the Sun

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

13. - G3C02

Where on the Earth do ionospheric layers reach their maximum height?

Select	Answer
A	Where the Sun is overhead
B	Where the Sun is rising
C	Where the Sun has just set
D	Where the Sun is on the opposite side of the Earth

14. - G4A10

What is the purpose of an electronic keyer?

Select	Answer
A	Automatic transmit/receive switching
B	Automatic generation of strings of dots and dashes for CW operation
C	Computer interface for PSK and RTTY operation
D	VOX operation

15. - G4B01

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

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

16. - G4C07

What is one good way to avoid unwanted effects of stray RF energy in an amateur station?

Select	Answer
A	Connect all equipment grounds together
B	Install an RF filter in series with the ground wire
C	Install a few ferrite beads on the ground wire where it connects to your station
D	Use a ground loop for best conductivity

17. - G4D06

Where is an S meter found?

Select	Answer
A	In a conductance bridge
B	In an SWR bridge
C	In a receiver
D	In a transmitter

18. - G4E02

What is the purpose of a corona ball on a HF mobile antenna?

Select	Answer
A	To reduce high voltage discharge from the tip of the antenna
B	To reduce the chance of damage if the antenna should strike an object
C	To increase the "Q" of the antenna
D	To narrow the operating bandwidth of the antenna

19. - G5A04

Which of the following causes opposition to the flow of alternating current in a capacitor?

Select	Answer
A	Admittance
B	Reactance
C	Conductance
D	Reluctance

20. - G5B09

What is the RMS voltage of a sine wave with a value of 17 volts peak?

Select	Answer
A	12 volts
B	8.5 volts
C	24 volts
D	34 volts

21. - G5C03

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

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

22. - G6A02

What is an advantage of the low internal resistance of nickel-cadmium batteries?

Select	Answer
A	High discharge current
B	Long life
C	High voltage
D	Rapid recharge

23. - G6B05

What is meant when memory is characterized as non-volatile?

Select	Answer
A	It is resistant to radiation damage
B	The stored information is maintained even if power is removed
C	The stored information cannot be changed once written
D	It is resistant to high temperatures

24. - G7A11

Which symbol in figure G7-1 represents an NPN junction transistor?

Select	Answer
A	Symbol 11
B	Symbol 7
C	Symbol 1
D	Symbol 2

25. - G7B06

What is a shift register?

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

26. - G7C08

What type of circuit is used in many FM receivers to convert signals coming from the IF amplifier to audio?

Select	Answer
A	Mixer
B	Discriminator
C	Phase inverter
D	Product detector

27. - G8A08

Which of the following is an effect of overmodulation?

Select	Answer
A	Frequency drift
B	Insufficient audio
C	Insufficient bandwidth
D	Excessive bandwidth

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	Quadrature noise
B	Image response
C	Mixer interference
D	Intermediate interference

29. - G8C09

What does the number 31 represent in "PSK31"?

Select	Answer
A	The version of the PSK protocol
B	The year in which PSK31 was invented
C	The approximate transmitted symbol rate
D	The number of characters that can be represented by PSK31

30. - G9A09

What standing wave ratio will result when connecting a 50 ohm feed line to a non-reactive load having 200 ohm impedance?

Select	Answer
A	2:1
B	1:2
C	4:1
D	1:4

31. - G9B07

How does the feed point impedance of a 1/2 wave dipole antenna change as the antenna is lowered below 1/4 wave above ground?

Select	Answer
A	It steadily decreases
B	It is unaffected by the height above ground
C	It peaks at about 1/8 wavelength above ground
D	It steadily increases

32. - G9C10

Which of the following is a Yagi antenna design variable that could be adjusted to optimize forward gain, front-to-back ratio, or SWR bandwidth?

Select	Answer
A	All of these choices are correct
B	The spacing of each element along the boom
C	The number of elements on the boom
D	The physical length of the boom

33. - G9D06

Which of the following is an advantage of a log periodic antenna?

Select	Answer
A	Higher gain per element than a Yagi antenna
B	Wide bandwidth
C	Polarization diversity
D	Harmonic suppression

34. - G0A05

What must you do if an evaluation of your station shows RF energy radiated from your station exceeds permissible limits?

Select	Answer
A	Secure written permission from your neighbors to operate above the controlled MPE limits
B	All of these choices are correct
C	File an Environmental Impact Statement (EIS-97) with the FCC
D	Take action to prevent human exposure to the excessive RF fields

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	60 amperes
B	15 amperes
C	100 amperes
D	30 amperes

Figure G7-1