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. - G1A04

Which of the following amateur bands is restricted to communication on only specific channels, rather than frequency ranges?

Select	Answer
A	12 meters
B	11 meters
C	30 meters
D	60 meters

2. - G1B09

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

Select	Answer
A	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
B	Never
C	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
D	Only when there is no other means of communications readily available

3. - G1C01

What is the maximum transmitting power an amateur station may use on 10.140 MHz?

Select	Answer
A	1000 watts PEP output
B	200 watts PEP output
C	1500 watts PEP output
D	2000 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	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
C	Only persons who once held an FCC issued Novice, Technician, or Technician Plus license
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. - G1E12

Under what circumstances are messages that are sent via digital modes exempt from Part 97 third party rules that apply to other modes of communication?

Select	Answer
A	When messages are encrypted
B	When messages are not encrypted
C	Under no circumstances
D	When under automatic control

6. - G2A07

Which of the following statements is true of the single sideband voice mode?

Select	Answer
A	SSB is the only voice mode that is authorized on the 20-meter, 15-meter, and 10-meter amateur bands
B	Only one sideband and the carrier are transmitted; the other sideband is suppressed
C	SSB is the only voice mode that is authorized on the 160-meter, 75-meter and 40-meter amateur bands
D	Only one sideband is transmitted; the other sideband and carrier are suppressed

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

8. - G2C10

What does the Q signal "QRN" mean?

Select	Answer
A	Stop sending
B	I am troubled by static
C	Send more slowly
D	Zero beat my signal

9. - G2D05

When is it permissible to communicate with amateur stations in countries outside the areas administered by the Federal Communications Commission?

Select	Answer
A	Only when the foreign country is a member of the International Amateur Radio Union
B	When the contact is with amateurs in any country except those whose administrations have notified the ITU that they object to such communications
C	Only when the foreign country has a formal third party agreement filed with the FCC
D	When the contact is with amateurs in any country as long as the communication is conducted in English

10. - G2E12

Which of the following describes a waterfall display?

Select	Answer
A	Frequency is horizontal, signal strength is intensity, time is vertical
B	Frequency is vertical, signal strength is horizontal, time is intensity
C	Frequency is horizontal, signal strength is vertical, time is intensity
D	Frequency is vertical, signal strength is intensity, time is horizontal

11. - G3A02

What effect does a Sudden Ionospheric Disturbance have on the daytime ionospheric propagation of HF radio waves?

Select	Answer
A	None, because only areas on the night side of the Earth are affected
B	It disrupts signals on lower frequencies more than those on higher frequencies
C	It disrupts communications via satellite more than direct communications
D	It enhances propagation on all HF frequencies

12. - G3B12

What factor or factors affect the MUF?

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

13. - G3C06

What is a characteristic of HF scatter signals?

Select	Answer
A	They have a wavering sound
B	All of these choices are correct
C	They have very large swings in signal strength
D	They have high intelligibility

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

15. - G4B11

Which of the following must be connected to an antenna analyzer when it is being used for SWR measurements?

Select	Answer
A	Receiver
B	Antenna and feed line
C	All of these choices are correct
D	Transmitter

16. - G4C11

Which of the following is a function of a digital signal processor?

Select	Answer
A	To remove noise from received signals
B	To provide adequate grounding
C	To increase antenna gain
D	To increase antenna bandwidth

17. - G4D04

What does an S meter measure?

Select	Answer
A	Received signal strength
B	Transmitter power output
C	Conductance
D	Impedance

18. - G4E01

What is the purpose of a capacitance hat on a mobile antenna?

Select	Answer
A	To electrically lengthen a physically short antenna
B	To allow automatic band changing
C	To increase the power handling capacity of a whip antenna
D	To allow remote tuning

19. - G5A11

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

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

20. - G5B02

How does the total current relate to the individual currents in each branch of a purely resistive parallel circuit?

Select	Answer
A	It decreases as more parallel branches are added to the circuit
B	It is the sum of the reciprocal of each individual voltage drop
C	It equals the average of each branch current
D	It equals the sum of the currents through each branch

21. - G5C08

What is the equivalent capacitance of two 5.0 nanofarad capacitors and one 750 picofarad capacitor connected in parallel?

Select	Answer
A	10.750 nanofarads
B	576.9 nanofarads
C	3583 picofarads
D	1733 picofarads

22. - G6A19

How should the winding axes of two solenoid inductors be oriented to minimize their mutual inductance?

Select	Answer
A	Interleaved
B	Parallel to each other
C	In line
D	At right angles to each other

23. - G6B12

Which of the following connectors would be a good choice for a serial data port?

Select	Answer
A	PL-259
B	Type SMA
C	DE-9
D	Type N

24. - G7A11

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

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

25. - G7B03

Which of the following describes the function of a two input AND gate?

Select	Answer
A	Output is low only when both inputs are high
B	Output is high only when both inputs are high
C	Output is low when either or both inputs are high
D	Output is high when either or both inputs are low

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	Detector
C	Balanced modulator
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	Angle convolution
B	Phase convolution
C	Phase modulation
D	Radian inversion

28. - G8B06

What is the total bandwidth of an FM phone transmission having 5 kHz deviation and 3 kHz modulating frequency?

Select	Answer
A	5 kHz
B	8 kHz
C	16 kHz
D	3 kHz

29. - G8C06

What action results from a failure to exchange information due to excessive transmission attempts when using PACTOR or WINMOR?

Select	Answer
A	The checksum overflows
B	Packets will be routed incorrectly
C	The connection is dropped
D	Encoding reverts to the default character set

30. - G9A07

What must be done to prevent standing waves on an antenna feed line?

Select	Answer
A	The antenna feed point must be at DC ground potential
B	The feed line must be cut to a length equal to an even number of physical half wavelengths
C	The antenna feed point impedance must be matched to the characteristic impedance of the feed line
D	The feed line must be cut to a length equal to an odd number of electrical quarter wavelengths

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

32. - G9C19

How does antenna gain stated in dBi compare to gain stated in dBd for the same antenna?

Select	Answer
A	dBi gain figures are 2.15 dB lower then dBd gain figures
B	dBi gain figures are the reciprocal of dBd gain figures + 2.15 dB
C	dBi gain figures are the same as the square root of dBd gain figures multiplied by 2.15
D	dBi gain figures are 2.15 dB higher than dBd gain figures

33. - G9D08

Why is a Beverage antenna not used for transmitting?

Select	Answer
A	All of these choices are correct
B	It has high losses compared to other types of antennas
C	Its impedance is too low for effective matching
D	It has poor directivity

34. - G0A01

What is one way that RF energy can affect human body tissue?

Select	Answer
A	It causes the blood count to reach a dangerously low level
B	It heats body tissue
C	It causes radiation poisoning
D	It cools body tissue

35. - G0B02

What is the minimum wire size that may be safely used for a circuit that draws up to 20 amperes of continuous current?

Select	Answer
A	AWG number 12
B	AWG number 8
C	AWG number 16
D	AWG number 20

Figure G7-1