US Amateur Radio - General (Element 3, 2015-2019) Practice Test

Anonymous User

US Amateur Radio - General (Element 3, 2015-2019) Practice Test

Logging in (or registering) will help the system to select questions that you need to focus on.

1. - G1A06

Which of the following frequencies is within the General Class portion of the 75-meter phone band?

Select	Answer
A	1875 kHz
B	3750 kHz
C	3900 kHz
D	4005 kHz

2. - G1B05

When may music be transmitted by an amateur station?

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

3. - G1C03

What is the maximum bandwidth permitted by FCC rules for Amateur Radio stations transmitting on USB frequencies in the 60-meter band?

Select	Answer
A	2.8 kHz
B	1.8 kHz
C	3 kHz
D	5.6 kHz

4. - G1D11

If a person has an expired FCC issued amateur radio license of General Class or higher, what is required before they can receive a new license?

Select	Answer
A	The applicant must be able to produce a copy of a page from a call book published in the USA showing his or her name and address
B	There are no requirements other than being able to show a copy of the expired license
C	The applicant must pass the current element 2 exam
D	They must have a letter from the FCC showing they once held an amateur or commercial license

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

6. - G2A01

Which sideband is most commonly used for voice communications on frequencies of 14 MHz or higher?

Select	Answer
A	Lower sideband
B	Vestigial sideband
C	Double sideband
D	Upper sideband

7. - G2B01

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

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

8. - G2C02

What should you do if a CW station sends "QRS"?

Select	Answer
A	Send slower
B	Change frequency
C	Increase your power
D	Repeat everything twice

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 isotropic antenna
D	An omnidirectional antenna

10. - G2E13

Which communication system sometimes uses the Internet to transfer messages?

Select	Answer
A	Skywarn
B	Winlink
C	ARES
D	RTTY

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

12. - G3B12

What factor or factors affect the MUF?

Select	Answer
A	Solar radiation and ionospheric disturbances
B	Path distance and location
C	All of these choices are correct
D	Time of day and season

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 D layer absorbs signals at these frequencies 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 F layer is unstable during daylight hours

14. - G4A02

What is one advantage of selecting the opposite or "reverse" sideband when receiving CW signals on a typical HF transceiver?

Select	Answer
A	More stations can be accommodated within a given signal passband
B	Accidental out of band operation can be prevented
C	Interference from impulse noise will be eliminated
D	It may be possible to reduce or eliminate interference from other signals

15. - G4B15

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

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

16. - G4C08

Which of the following would reduce RF interference caused by common-mode current on an audio cable?

Select	Answer
A	Adding shunt inductors to the conductors
B	Adding an additional insulating jacket to the cable
C	Placing a ferrite choke around the cable
D	Adding series capacitors to the conductors

17. - G4D08

What frequency range is occupied by a 3 kHz LSB signal when the displayed carrier frequency is set to 7.178 MHz?

Select	Answer
A	7.175 to 7.178 MHz
B	7.178 to 7.181 MHz
C	7.178 to 7.184 MHz
D	7.1765 to 7.1795 MHz

18. - G4E02

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

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

19. - G5A09

What unit is used to measure reactance?

Select	Answer
A	Farad
B	Ohm
C	Ampere
D	Siemens

20. - G5B12

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

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

21. - G5C13

Which of the following components should be added to a capacitor to increase the capacitance?

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

22. - G6A08

Why must the cases of some large power transistors be insulated from ground?

Select	Answer
A	To improve the power dissipation capability
B	To avoid shorting the collector or drain voltage to ground
C	To increase the beta of the transistor
D	To reduce stray capacitance

23. - G6B17

What is the general description of a DIN type connector?

Select	Answer
A	A DC power connector rated for currents between 30 and 50 amperes
B	A special watertight connector for use in marine applications
C	A special connector for microwave interfacing
D	A family of multiple circuit connectors suitable for audio and control signals

24. - G7A11

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

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

25. - G7B05

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

Select	Answer
A	8
B	3
C	6
D	16

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	Mixer
B	IF amplifier
C	Balanced modulator
D	Detector

27. - G8A08

Which of the following is an effect of overmodulation?

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

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	Pre-emphasis network
B	Multiplier
C	Reactance modulator
D	Mixer

29. - G8C01

Which of the following digital modes is designed to operate at extremely low signal strength on the HF bands?

Select	Answer
A	JT9 and JT65
B	RTTY
C	Clover
D	FSK441 and Hellschreiber

30. - G9A01

Which of the following factors determine the characteristic impedance of a parallel conductor antenna feed line?

Select	Answer
A	The radius of the conductors and the frequency of the signal
B	The distance between the centers of the conductors and the radius of the conductors
C	The distance between the centers of the conductors and the length of the line
D	The frequency of the signal and the length of the line

31. - G9B01

What is one disadvantage of a directly fed random-wire HF antenna?

Select	Answer
A	You may experience RF burns when touching metal objects in your station
B	It must be longer than 1 wavelength
C	It produces only vertically polarized radiation
D	It is more effective on the lower HF bands than on the higher bands

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 number of elements on the boom
C	The spacing of each element along the boom
D	The physical length of the boom

33. - G9D05

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

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

34. - G0A12

What precaution should you take whenever you make adjustments or repairs to an antenna?

Select	Answer
A	Turn off the transmitter and disconnect the feed line
B	Wear a radiation badge
C	All of these choices are correct
D	Ensure that you and the antenna structure are grounded

35. - G0B13

What must you do when powering your house from an emergency generator?

Select	Answer
A	All of these choices are correct
B	Insure that the generator is not grounded
C	Disconnect the incoming utility power feed
D	Insure that all lightning grounds are disconnected

Figure G7-1