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

2. - G1B05

When may music be transmitted by an amateur station?

Select	Answer
A	At any time, as long as it produces no spurious emissions
B	When it is unintentionally transmitted from the background at the transmitter
C	When it is an incidental part of a manned space craft retransmission
D	When it is transmitted on frequencies above 1215 MHz

3. - G1C08

What is the maximum symbol rate permitted for RTTY or data emission transmitted at frequencies below 28 MHz?

Select	Answer
A	300 baud
B	19.6 kilobaud
C	1200 baud
D	56 kilobaud

4. - G1D07

Volunteer Examiners are accredited by what organization?

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

5. - G1E13

On what bands may automatically controlled stations transmitting RTTY or data emissions communicate with other automatically controlled digital stations?

Select	Answer
A	Anywhere in the 1.25-meter or shorter wavelength bands, and in specified segments of the 80-meter through 2-meter bands
B	Only in the non-phone Extra Class segments of the bands
C	Anywhere in the non-phone segments of the 10-meter or shorter wavelength bands
D	On any band segment where digital operation is permitted

6. - G2A10

Which of the following statements is true of voice VOX operation versus PTT operation?

Select	Answer
A	It provides more power output
B	It occupies less bandwidth
C	The received signal is more natural sounding
D	It allows "hands free" operation

7. - G2B01

Which of the following is true concerning access to frequencies in non-emergency situations?

Select	Answer
A	Except during FCC declared emergencies, no one has priority access to frequencies
B	QSOs in progress always have priority
C	Nets always have priority
D	Contest operations must always yield to non-contest use of frequencies

8. - G2C09

What does the Q signal "QSL" mean?

Select	Answer
A	Send slower
B	We have worked before
C	We have already confirmed by card
D	I acknowledge receipt

9. - G2D01

What is the Amateur Auxiliary to the FCC?

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

10. - G2E07

What segment of the 80-meter band is most commonly used for digital transmissions?

Select	Answer
A	3775 - 3825 kHz
B	3700 - 3750 kHz
C	3570 - 3600 kHz
D	3500 - 3525 kHz

11. - G3A03

Approximately how long does it take the increased ultraviolet and X-ray radiation from solar flares to affect radio propagation on the Earth?

Select	Answer
A	28 days
B	8 minutes
C	1 to 2 hours
D	20 to 40 hours

12. - G3B10

What is the approximate maximum distance along the Earth's surface that is normally covered in one hop using the E region?

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

13. - G3C03

Why is the F2 region mainly responsible for the longest distance radio wave propagation?

Select	Answer
A	Because it does not absorb radio waves as much as other ionospheric regions
B	Because it is the densest ionospheric layer
C	All of these choices are correct
D	Because it is the highest ionospheric region

14. - G4A04

What reading on the plate current meter of a vacuum tube RF power amplifier indicates correct adjustment of the plate tuning control?

Select	Answer
A	A slow, rhythmic oscillation
B	A pronounced peak
C	No change will be observed
D	A pronounced dip

15. - G4B10

Which of the following can be determined with a directional wattmeter?

Select	Answer
A	Radio wave propagation
B	RF interference
C	Standing wave ratio
D	Antenna front-to-back ratio

16. - G4C06

What effect can be caused by a resonant ground connection?

Select	Answer
A	Overheating of ground straps
B	A ground loop
C	High RF voltages on the enclosures of station equipment
D	Corrosion of the ground rod

17. - G4D09

What frequency range is occupied by a 3 kHz USB signal with the displayed carrier frequency set to 14.347 MHz?

Select	Answer
A	14.3455 to 14.3485 MHz
B	14.344 to 14.347 MHz
C	14.347 to 14.350 MHz
D	14.347 to 14.647 MHz

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

19. - G5A09

What unit is used to measure reactance?

Select	Answer
A	Ampere
B	Ohm
C	Farad
D	Siemens

20. - G5B10

What percentage of power loss would result from a transmission line loss of 1 dB?

Select	Answer
A	25.9 percent
B	12.2 percent
C	10.9 percent
D	20.5 percent

21. - G5C16

Why is the conductor of the primary winding of many voltage step up transformers larger in diameter than the conductor of the secondary winding?

Select	Answer
A	To insure that the volume of the primary winding is equal to the volume of the secondary winding
B	To accommodate the higher current of the primary
C	To improve the coupling between the primary and secondary
D	To prevent parasitic oscillations due to resistive losses in the primary

22. - G6A03

What is the approximate junction threshold voltage of a germanium diode?

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

23. - G6B13

Which of these connector types is commonly used for RF connections at frequencies up to 150 MHz?

Select	Answer
A	Octal
B	RJ-11
C	DB-25
D	PL-259

24. - G7A05

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

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

25. - G7B02

Which of the following is an advantage of using the binary system when processing digital signals?

Select	Answer
A	All of these choices are correct
B	Binary "ones" and "zeros" are easy to represent by an "on" or "off" state
C	The binary number system is most accurate
D	Binary numbers are more compatible with analog circuitry

26. - G7C01

Which of the following is used to process signals from the balanced modulator then send them to the mixer in some single sideband phone transmitters?

Select	Answer
A	Carrier oscillator
B	RF amplifier
C	Filter
D	IF amplifier

27. - G8A02

What is the name of the process that changes the phase angle of an RF wave to convey information?

Select	Answer
A	Phase modulation
B	Radian inversion
C	Angle convolution
D	Phase convolution

28. - G8B07

What is the frequency deviation for a 12.21 MHz reactance modulated oscillator in a 5 kHz deviation, 146.52 MHz FM phone transmitter?

Select	Answer
A	5 kHz
B	60 kHz
C	416.7 Hz
D	101.75 Hz

29. - G8C05

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

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

30. - G9A06

In what units is RF feed line loss usually expressed?

Select	Answer
A	Decibels per 1000 feet
B	Ohms per 1000 feet
C	Decibels per 100 feet
D	Ohms per 100 feet

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	Parallel to the antenna element
C	As high as possible above the ground
D	On the surface of the Earth or buried a few inches below the ground

32. - G9C17

Approximately how long is each leg of a symmetrical delta-loop antenna?

Select	Answer
A	1/3 wavelength
B	2/3 wavelength
C	1/2 wavelength
D	1/4 wavelength

33. - G9D09

Which of the following is an application for a Beverage antenna?

Select	Answer
A	Directional transmitting for low HF bands
B	Directional receiving for low HF bands
C	Portable direction finding at lower HF frequencies
D	Portable direction finding at higher HF frequencies

34. - G0A06

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

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

35. - G0B10

Which of the following is a danger from lead-tin solder?

Select	Answer
A	High voltages can cause lead-tin solder to disintegrate suddenly
B	Lead can contaminate food if hands are not washed carefully after handling the solder
C	RF energy can convert the lead into a poisonous gas
D	Tin in the solder can "cold flow" causing shorts in the circuit