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. - G1A07

Which of the following frequencies is within the General Class portion of the 20-meter phone band?

Select	Answer
A	14405 kHz
B	14105 kHz
C	14305 kHz
D	14005 kHz

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 IEEE
B	The Control Operator
C	The FCC
D	The ITU

3. - G1C02

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

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

4. - G1D01

Who may receive credit for the elements represented by an expired amateur radio license?

Select	Answer
A	Anyone who held an FCC issued amateur radio license that has been expired for not less than 5 years and not more than 15 years
B	Only persons who once held an FCC issued Novice, Technician, or Technician Plus license
C	Any person who previously held an amateur license issued by another country, but only if that country has a current reciprocal licensing agreement with the FCC
D	Any person who can demonstrate that they once held an FCC issued General, Advanced, or Amateur Extra class license that was not revoked by the FCC

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

6. - G2A05

Which mode of voice communication is most commonly used on the HF amateur bands?

Select	Answer
A	Phase modulation
B	Single sideband
C	Double sideband
D	Frequency modulation

7. - G2B03

If propagation changes during your contact and you notice increasing interference from other activity on the same frequency, what should you do?

Select	Answer
A	Increase power to overcome interference
B	Report the interference to your local Amateur Auxiliary Coordinator
C	As a common courtesy, move your contact to another frequency
D	Tell the interfering stations to change frequency

8. - G2C06

What does the term "zero beat" mean in CW operation?

Select	Answer
A	Operating split to avoid interference on frequency
B	Sending without error
C	Matching the speed of the transmitting station
D	Matching your transmit frequency to the frequency of a received signal

9. - G2D11

Which HF antenna would be the best to use for minimizing interference?

Select	Answer
A	A directional antenna
B	A quarter-wave vertical antenna
C	An omnidirectional antenna
D	An isotropic antenna

10. - G2E13

Which communication system sometimes uses the Internet to transfer messages?

Select	Answer
A	RTTY
B	Winlink
C	ARES
D	Skywarn

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

12. - G3B04

What is a reliable way to determine if the MUF is high enough to support skip propagation between your station and a distant location on frequencies between 14 and 30 MHz?

Select	Answer
A	Check the strength of TV signals from Western Europe
B	Send a series of dots on the band and listen for echoes from your signal
C	Check the strength of signals in the MF AM broadcast band
D	Listen for signals from an international beacon in the frequency range you plan to use

13. - G3C07

What makes HF scatter signals often sound distorted?

Select	Answer
A	The ionospheric layer involved is unstable
B	Ground waves are absorbing much of the signal
C	Energy is scattered into the skip zone through several different radio wave paths
D	The E-region is not present

14. - G4A11

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

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

15. - G4B15

What type of transmitter performance does a two-tone test analyze?

Select	Answer
A	Percentage of carrier phase shift
B	Percentage of frequency modulation
C	Linearity
D	Percentage of suppression of carrier and undesired sideband for SSB

16. - G4C09

How can a ground loop be avoided?

Select	Answer
A	Connect the AC neutral conductor to the ground wire
B	Connect all ground conductors in series
C	Connect all ground conductors to a single point
D	Avoid using lock washers and star washers when making ground connections

17. - G4D03

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

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

18. - G4E07

Which of the following may cause interference to be heard in the receiver of an HF radio installed in a recent model vehicle?

Select	Answer
A	All of these choices are correct
B	The fuel delivery system
C	The vehicle control computer
D	The battery charging system

19. - G5A11

Which of the following describes one method of impedance matching between two AC circuits?

Select	Answer
A	Reduce the power output of the first circuit
B	Increase the power output of the first circuit
C	Insert an LC network between the two circuits
D	Insert a circulator between the two circuits

20. - G5B10

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

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

21. - G5C03

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

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

22. - G6A04

When is it acceptable to recharge a carbon-zinc primary cell?

Select	Answer
A	Never
B	When a constant current charger is used
C	When the cell is kept warm during the recharging period
D	As long as the voltage has not been allowed to drop below 1.0 volt

23. - G6B14

Which of these connector types is commonly used for audio signals in Amateur Radio stations?

Select	Answer
A	RCA Phono
B	BNC
C	Type N
D	PL-259

24. - G7A02

Which of the following components are used in a power supply filter network?

Select	Answer
A	Quartz crystals
B	Capacitors and inductors
C	Diodes
D	Transformers and transducers

25. - G7B02

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

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

26. - G7C02

Which circuit is used to combine signals from the carrier oscillator and speech amplifier then send the result to the filter in some single sideband phone transmitters?

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

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

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	Image response
B	Intermediate interference
C	Mixer interference
D	Quadrature noise

29. - G8C08

Which of the following statements is true about PSK31?

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

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

31. - G9B05

How does antenna height affect the horizontal (azimuthal) radiation pattern of a horizontal dipole HF antenna?

Select	Answer
A	If the antenna is too high, the pattern becomes unpredictable
B	If the antenna is less than 1/2 wavelength high, radiation off the ends of the wire is eliminated
C	Antenna height has no effect on the pattern
D	If the antenna is less than 1/2 wavelength high, the azimuthal pattern is almost omnidirectional

32. - G9C08

What is meant by the "main lobe" of a directive antenna?

Select	Answer
A	The magnitude of the maximum vertical angle of radiation
B	The maximum voltage standing wave point on a radiating element
C	The point of maximum current in a radiating antenna element
D	The direction of maximum radiated field strength from the antenna

33. - G9D06

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

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

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. - G0B15

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

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