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. - G1A11

When General Class licensees are not permitted to use the entire voice portion of a particular band, which portion of the voice segment is generally available to them?

Select	Answer
A	The lower frequency end on frequencies below 7.3 MHz and the upper end on frequencies above 14.150 MHz
B	The lower frequency end
C	The upper frequency end
D	The upper frequency end on frequencies below 7.3 MHz and the lower end on frequencies above 14.150 MHz

2. - G1B02

With which of the following conditions must beacon stations comply?

Select	Answer
A	The frequency must be posted on the Internet or published in a national periodical
B	The frequency must be coordinated with the National Beacon Organization
C	There must be no more than one beacon signal transmitting in the same band from the same station location
D	A beacon station may not use automatic control

3. - G1C04

Which of the following limitations apply to transmitter power on every amateur band?

Select	Answer
A	Effective radiated power cannot exceed 1500 watts
B	Power must be limited to 200 watts when transmitting between 14.100 MHz and 14.150 MHz
C	Power should be limited as necessary to avoid interference to another radio service on the frequency
D	Only the minimum power necessary to carry out the desired communications should be used

4. - G1D10

What is the minimum age that one must be to qualify as an accredited Volunteer Examiner?

Select	Answer
A	21 years
B	There is no age limit
C	18 years
D	12 years

5. - G1E05

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

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

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	Lower sideband
C	Upper sideband
D	Vestigial sideband

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	Continue your communication because you were on the frequency first
D	Immediately cease all transmissions

8. - G2C01

Which of the following describes full break-in telegraphy (QSK)?

Select	Answer
A	Transmitting stations can receive between code characters and elements
B	Breaking stations send the Morse code prosign BK
C	An operator must activate a manual send/receive switch before and after every transmission
D	Automatic keyers are used to send Morse code instead of hand keys

9. - G2D01

What is the Amateur Auxiliary to the FCC?

Select	Answer
A	Amateur volunteers who conduct frequency coordination for amateur VHF repeaters
B	Amateur volunteers who use their station equipment to help civil defense organizations in times of emergency
C	Amateur volunteers who conduct amateur licensing examinations
D	Amateur volunteers who are formally enlisted to monitor the airwaves for rules violations

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	USB
C	SSB
D	DSB

11. - G3A08

Which of the following effects can a geomagnetic storm have on radio propagation?

Select	Answer
A	Improved high-latitude HF propagation
B	Improved ground-wave propagation
C	Degraded high-latitude HF propagation
D	Improved chances of UHF ducting

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

13. - G3C08

Why are HF scatter signals in the skip zone usually weak?

Select	Answer
A	Only a small part of the signal energy is scattered into the skip zone
B	Signals are scattered from the magnetosphere which is not a good reflector
C	Propagation is through ground waves which absorb most of the signal energy
D	Propagations is through ducts in F region which absorb most of the energy

14. - G4A10

What is the purpose of an electronic keyer?

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

15. - G4B01

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

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

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

17. - G4D06

Where is an S meter found?

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

18. - G4E08

What is the name of the process by which sunlight is changed directly into electricity?

Select	Answer
A	Photosynthesis
B	Photon emission
C	Photovoltaic conversion
D	Photon decomposition

19. - G5A13

Which of the following devices can be used for impedance matching at radio frequencies?

Select	Answer
A	A length of transmission line
B	A transformer
C	All of these choices are correct
D	A Pi-network

20. - G5B09

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

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

21. - G5C06

What is the RMS voltage across a 500-turn secondary winding in a transformer if the 2250-turn primary is connected to 120 VAC?

Select	Answer
A	2370 volts
B	5.9 volts
C	26.7 volts
D	540 volts

22. - G6A05

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

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

23. - G6B05

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

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

24. - G7A13

Which symbol in Figure G7-1 represents a tapped inductor?

Select	Answer
A	Symbol 11
B	Symbol 7
C	Symbol 1
D	Symbol 6

25. - G7B05

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

Select	Answer
A	6
B	16
C	8
D	3

26. - G7C09

Which of the following is needed for a Digital Signal Processor IF filter?

Select	Answer
A	An analog to digital converter
B	A digital processor chip
C	All of the these choices are correct
D	A digital to analog converter

27. - G8A01

How is an FSK signal generated?

Select	Answer
A	By using a transceiver's computer data interface protocol to change frequencies
B	By changing an oscillator's frequency directly with a digital control signal
C	By reconfiguring the CW keying input to act as a tone generator
D	By keying an FM transmitter with a sub-audible tone

28. - G8B04

What is the stage in a VHF FM transmitter that generates a harmonic of a lower frequency signal to reach the desired operating frequency?

Select	Answer
A	Multiplier
B	Reactance modulator
C	Pre-emphasis network
D	Mixer

29. - G8C02

How many data bits are sent in a single PSK31 character?

Select	Answer
A	5
B	8
C	7
D	The number varies

30. - G9A12

What standing wave ratio will result when connecting a 50 ohm feed line to a non-reactive load having 25 ohm impedance?

Select	Answer
A	2.5:1
B	1.25:1
C	2:1
D	You cannot determine SWR from impedance values

31. - G9B12

What is the approximate length for a 1/4 wave vertical antenna cut for 28.5 MHz?

Select	Answer
A	21 feet
B	8 feet
C	16 feet
D	11 feet

32. - G9C19

How does antenna gain stated in dBi compare to gain stated in dBd for the same antenna?

Select	Answer
A	dBi gain figures are 2.15 dB higher than dBd gain figures
B	dBi gain figures are the reciprocal of dBd gain figures + 2.15 dB
C	dBi gain figures are 2.15 dB lower then dBd gain figures
D	dBi gain figures are the same as the square root of dBd gain figures multiplied by 2.15

33. - G9D01

What does the term NVIS mean as related to antennas?

Select	Answer
A	Non-Varying Indicated SWR
B	Nearly Vertical Inductance System
C	Near Vertical Incidence sky-wave
D	Non-Varying Impedance Smoothing

34. - G0A06

What precaution should be taken when installing a ground-mounted antenna?

Select	Answer
A	It should not be installed in a wet area
B	It should limited to 10 feet in height
C	It should not be installed higher than you can reach
D	It should be installed such that it is protected against unauthorized access

35. - G0B15

Which of the following is true of an emergency generator installation?

Select	Answer
A	The generator must be insulated from ground
B	All of these choices are correct
C	Fuel should be stored near the generator for rapid refueling in case of an emergency
D	The generator should be located in a well-ventilated area

Figure G7-1