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. - G1A09

Which of the following frequencies is within the General Class portion of the 15-meter band?

Select	Answer
A	24900 kHz
B	18155 kHz
C	21300 kHz
D	14250 kHz

2. - G1B09

When may an amateur station transmit communications in which the licensee or control operator has a pecuniary (monetary) interest?

Select	Answer
A	Only when there is no other means of communications readily available
B	When other amateurs are being notified of the sale of apparatus normally used in an amateur station and such activity is not done on a regular basis
C	Never
D	When other amateurs are being notified of the sale of any item with a monetary value less than $200 and such activity is not done on a regular basis

3. - G1C10

What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 10-meter band?

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

4. - G1D07

Volunteer Examiners are accredited by what organization?

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

5. - G1E05

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

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

6. - G2A04

Which mode is most commonly used for voice communications on the 17-meter and 12-meter bands?

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

7. - G2B10

When may the FCC restrict normal frequency operations of amateur stations participating in RACES?

Select	Answer
A	Only when all amateur stations are instructed to stop transmitting
B	When the President's War Emergency Powers have been invoked
C	When they declare a temporary state of communication emergency
D	When they seize your equipment for use in disaster communications

8. - G2C06

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

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

9. - G2D04

Which of the following describes an azimuthal projection map?

Select	Answer
A	A map that shows accurate land masses
B	A map that shows the angle at which an amateur satellite crosses the equator
C	A map that shows the number of degrees longitude that an amateur satellite appears to move westward at the equator with each orbit
D	A map that shows true bearings and distances from a particular location

10. - G2E02

How can a PACTOR modem or controller be used to determine if the channel is in use by other PACTOR stations?

Select	Answer
A	Unplug the data connector temporarily and see if the channel-busy indication is turned off
B	Put the modem or controller in a mode which allows monitoring communications without a connection
C	Send the message: "Is this frequency in use?"
D	Transmit UI packets several times and wait to see if there is a response from another PACTOR station

11. - G3A01

What is the significance of the sunspot number with regard to HF propagation?

Select	Answer
A	Lower sunspot numbers generally indicate greater probability of sporadic E propagation
B	A zero sunspot number indicate radio propagation is not possible on any band
C	All of these choices are correct.
D	Higher sunspot numbers generally indicate a greater probability of good propagation at higher frequencies

12. - G3B06

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

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

13. - G3C07

What makes HF scatter signals often sound distorted?

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

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 permit listening on a different frequency from that on which you are transmitting
D	To change frequency rapidly

15. - G4B06

What is an advantage of a digital voltmeter as compared to an analog voltmeter?

Select	Answer
A	Better for measuring computer circuits
B	Better for RF measurements
C	Better precision for most uses
D	Faster response

16. - G4C09

How can a ground loop be avoided?

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

17. - G4D01

What is the purpose of a speech processor as used in a modern transceiver?

Select	Answer
A	Prevent distortion of voice signals
B	Decrease high-frequency voice output to prevent out of band operation
C	Increase the intelligibility of transmitted phone signals during poor conditions
D	Increase transmitter bass response for more natural sounding SSB signals

18. - G4E08

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

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

19. - G5A08

Why is impedance matching important?

Select	Answer
A	To ensure that there is less resistance than reactance in the circuit
B	To ensure that the resistance and reactance in the circuit are equal
C	So the load will draw minimum power from the source
D	So the source can deliver maximum power to the load

20. - G5B13

What is the output PEP of an unmodulated carrier if an average reading wattmeter connected to the transmitter output indicates 1060 watts?

Select	Answer
A	2120 watts
B	1060 watts
C	530 watts
D	1500 watts

21. - G5C15

What is the total resistance of a 10 ohm, a 20 ohm, and a 50 ohm resistor connected in parallel?

Select	Answer
A	0.17 ohms
B	10000 ohms
C	80 ohms
D	5.9 ohms

22. - G6A04

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

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

23. - G6B06

What kind of device is an integrated circuit operational amplifier?

Select	Answer
A	Analog
B	MMIC
C	Digital
D	Programmable Logic

24. - G7A09

Which symbol in figure G7-1 represents a field effect transistor?

Select	Answer
A	Symbol 5
B	Symbol 1
C	Symbol 4
D	Symbol 2

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 numbers are more compatible with analog circuitry
C	The binary number system is most accurate
D	Binary "ones" and "zeros" are easy to represent by an "on" or "off" state

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	A digital to analog converter
D	All of the these choices are correct

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

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	Mixer
B	Reactance modulator
C	Multiplier
D	Pre-emphasis network

29. - G8C07

How does the receiving station respond to an ARQ data mode packet containing errors?

Select	Answer
A	It requests a change in transmitting protocol
B	It terminates the contact
C	It sends the packet back to the transmitting station
D	It requests the packet be retransmitted

30. - G9A08

If the SWR on an antenna feed line is 5 to 1, and a matching network at the transmitter end of the feed line is adjusted to 1 to 1 SWR, what is the resulting SWR on the feed line?

Select	Answer
A	5 to 1
B	1 to 1
C	Between 1 to 1 and 5 to 1 depending on the reflected power at the transmitter
D	Between 1 to 1 and 5 to 1 depending on the characteristic impedance of the line

31. - G9B03

What happens to the feed point impedance of a ground plane antenna when its radials are changed from horizontal to sloping downward?

Select	Answer
A	It stays the same
B	It increases
C	It reaches a maximum at an angle of 45 degrees
D	It decreases

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. - G9D06

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

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

34. - G0A06

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

Select	Answer
A	It should limited to 10 feet in height
B	It should not be installed in a wet area
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. - 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	Tin in the solder can "cold flow" causing shorts in the circuit
C	Lead can contaminate food if hands are not washed carefully after handling the solder
D	High voltages can cause lead-tin solder to disintegrate suddenly

Figure G7-1