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

2. - G1B12

Who or what determines "good engineering and good amateur practice" as applied to the operation of an amateur station in all respects not covered by the Part 97 rules?

Select	Answer
A	The FCC
B	The IEEE
C	The Control Operator
D	The ITU

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	1500 watts PEP output
B	100 watts PEP output
C	2000 watts PEP output
D	1000 watts PEP output

4. - G1D09

How long is a Certificate of Successful Completion of Examination (CSCE) valid for exam element credit?

Select	Answer
A	180 days
B	For as long as your current license is valid
C	365 days
D	30 days

5. - G1E08

Which of the following is a requirement for a non-licensed person to communicate with a foreign Amateur Radio station from a station with an FCC-granted license at which an FCC licensed control operator is present?

Select	Answer
A	All of these choices are correct
B	The foreign amateur station must be in a country with which the United States has a third party agreement
C	The control operator must have at least a General Class license
D	Information must be exchanged in English

6. - G2A08

Which of the following is a recommended way to break into a contact when using phone?

Select	Answer
A	Say "Break Break Break" and wait for a response
B	Say your call sign during a break between transmissions by the other stations
C	Say "CQ" followed by the call sign of either station
D	Say "QRZ" several times followed by your call sign

7. - G2B08

What is the "DX window" in a voluntary band plan?

Select	Answer
A	An FCC rule that prohibits contacts between stations within the United States and possessions in that portion of the band
B	An FCC rule that allows only digital contacts in that portion of the band
C	A portion of the band that has been voluntarily set aside for digital contacts only
D	A portion of the band that should not be used for contacts between stations within the 48 contiguous United States

8. - G2C08

What prosign is sent to indicate the end of a formal message when using CW?

Select	Answer
A	AR
B	SK
C	BK
D	KN

9. - G2D01

What is the Amateur Auxiliary to the FCC?

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

10. - G2E04

What segment of the 20-meter band is most often used for digital transmissions?

Select	Answer
A	14.000 - 14.050 MHz
B	14.070 - 14.100 MHz
C	14.275 - 14.350 MHz
D	14.150 - 14.225 MHz

11. - G3A09

What effect does a high sunspot number have on radio communications?

Select	Answer
A	High-frequency radio signals become weak and distorted
B	Long-distance communication in the upper HF and lower VHF range is enhanced
C	Microwave communications become unstable
D	Frequencies above 300 MHz become usable for long-distance communication

12. - G3B06

What usually happens to radio waves with frequencies below the LUF?

Select	Answer
A	They pass through the ionosphere
B	They are completely absorbed by the ionosphere
C	They are bent back to the Earth
D	They are bent and trapped in the ionosphere to circle the Earth

13. - G3C05

Why is long distance communication on the 40-meter, 60-meter, 80-meter and 160-meter bands more difficult during the day?

Select	Answer
A	The F layer is unstable during daylight hours
B	The F layer absorbs signals at these frequencies during daylight hours
C	The E layer is unstable during daylight hours
D	The D layer absorbs signals at these frequencies during daylight hours

14. - G4A11

Which of the following is a use for the IF shift control on a receiver?

Select	Answer
A	To avoid interference from stations very close to the receive frequency
B	To tune in stations that are slightly off frequency without changing your transmit frequency
C	To change frequency rapidly
D	To permit listening on a different frequency from that on which you are transmitting

15. - G4B08

Which of the following instruments may be used to monitor relative RF output when making antenna and transmitter adjustments?

Select	Answer
A	A field strength meter
B	A multimeter
C	An antenna noise bridge
D	A Q meter

16. - G4C13

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

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

17. - G4D03

Which of the following can be the result of an incorrectly adjusted speech processor?

Select	Answer
A	All of these choices are correct
B	Distorted speech
C	Splatter
D	Excessive background pickup

18. - G4E06

What is one disadvantage of using a shortened mobile antenna as opposed to a full size antenna?

Select	Answer
A	Short antennas can only receive circularly polarized signals
B	Harmonic radiation may increase
C	Short antennas are more likely to cause distortion of transmitted signals
D	Operating bandwidth may be very limited

19. - G5A02

What is reactance?

Select	Answer
A	Opposition to the flow of direct current caused by resistance
B	Opposition to the flow of alternating current caused by capacitance or inductance
C	A large spark produced at switch contacts when an inductor is de-energized
D	A property of ideal resistors in AC circuits

20. - G5B12

What would be the RMS voltage across a 50 ohm dummy load dissipating 1200 watts?

Select	Answer
A	173 volts
B	245 volts
C	346 volts
D	692 volts

21. - G5C14

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

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

22. - G6A01

What is the minimum allowable discharge voltage for maximum life of a standard 12 volt lead acid battery?

Select	Answer
A	8.5 volts
B	6 volts
C	12 volts
D	10.5 volts

23. - G6B18

What is a type SMA connector?

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

24. - G7A05

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

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

25. - G7B07

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

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

26. - G7C03

What circuit is used to process signals from the RF amplifier and local oscillator then send the result to the IF filter in a superheterodyne receiver?

Select	Answer
A	Balanced modulator
B	IF amplifier
C	Mixer
D	Detector

27. - G8A04

What emission is produced by a reactance modulator connected to a transmitter RF amplifier stage?

Select	Answer
A	Pulse modulation
B	Multiplex modulation
C	Amplitude modulation
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	1800 Hz
D	31.5 Hz

29. - G8C03

What part of a data packet contains the routing and handling information?

Select	Answer
A	Header
B	Footer
C	Directory
D	Preamble

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

31. - G9B08

How does the feed point impedance of a 1/2 wave dipole change as the feed point is moved from the center toward the ends?

Select	Answer
A	It is unaffected by the location of the feed point
B	It steadily increases
C	It steadily decreases
D	It peaks at about 1/8 wavelength from the end

32. - G9C03

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

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

33. - G9D05

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

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

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 in a wet area
C	It should not be installed higher than you can reach
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	RF energy can convert the lead into a poisonous gas
B	High voltages can cause lead-tin solder to disintegrate suddenly
C	Tin in the solder can "cold flow" causing shorts in the circuit
D	Lead can contaminate food if hands are not washed carefully after handling the solder