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. - G1A13

What is the appropriate action if, when operating on either the 30-meter or 60-meter bands, a station in the primary service interferes with your contact?

Select	Answer
A	Notify the FCCs regional Engineer in Charge of the interference
B	Increase your transmitter's power to overcome the interference
C	Attempt to contact the station and request that it stop the interference
D	Move to a clear frequency or stop transmitting

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	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	Only when there is no other means of communications readily available
D	Never

3. - G1C06

Which of the following is a limitation on transmitter power on the 1.8 MHz band?

Select	Answer
A	200 watts PEP output
B	1200 watts PEP output
C	1500 watts PEP output
D	1000 watts PEP output

4. - G1D07

Volunteer Examiners are accredited by what organization?

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

5. - G1E09

What language must be used when identifying your station if you are using a language other than English in making a contact using phone emission?

Select	Answer
A	Any language recognized by the United Nations
B	English only
C	English, Spanish, French, or German
D	The language being used for the contact

6. - G2A08

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

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

7. - G2B02

What is the first thing you should do if you are communicating with another amateur station and hear a station in distress break in?

Select	Answer
A	Immediately cease all transmissions
B	Acknowledge the station in distress and determine what assistance may be needed
C	Change to a different frequency
D	Continue your communication because you were on the frequency first

8. - G2C01

Which of the following describes full break-in telegraphy (QSK)?

Select	Answer
A	Breaking stations send the Morse code prosign BK
B	Automatic keyers are used to send Morse code instead of hand keys
C	An operator must activate a manual send/receive switch before and after every transmission
D	Transmitting stations can receive between code characters and elements

9. - G2D03

What skills learned during hidden transmitter hunts are of help to the Amateur Auxiliary?

Select	Answer
A	Identification of different call signs
B	Direction finding used to locate stations violating FCC Rules
C	Hunters have an opportunity to transmit on non-amateur frequencies
D	Identification of out of band operation

10. - G2E08

In what segment of the 20-meter band are most PSK31 operations commonly found?

Select	Answer
A	At the bottom of the slow-scan TV segment, near 14.230 MHz
B	In the middle of the CW segment, near 14.100 MHz
C	At the top of the SSB phone segment, near 14.325 MHz
D	Below the RTTY segment, near 14.070 MHz

11. - G3A14

How are radio communications usually affected by the charged particles that reach the Earth from solar coronal holes?

Select	Answer
A	HF communications are improved
B	VHF/UHF ducting is disturbed
C	HF communications are disturbed
D	VHF/UHF ducting is improved

12. - G3B03

Which of the following applies when selecting a frequency for lowest attenuation when transmitting on HF?

Select	Answer
A	Select a frequency just above the critical frequency
B	Select a frequency just below the critical frequency
C	Select a frequency just below the MUF
D	Select a frequency just above the LUF

13. - G3C01

Which ionospheric layer is closest to the surface of the Earth?

Select	Answer
A	The F1 layer
B	The F2 layer
C	The E layer
D	The D layer

14. - G4A01

What is the purpose of the "notch filter" found on many HF transceivers?

Select	Answer
A	To eliminate receiver interference from impulse noise sources
B	To restrict the transmitter voice bandwidth
C	To enhance the reception of a specific frequency on a crowded band
D	To reduce interference from carriers in the receiver passband

15. - G4B10

Which of the following can be determined with a directional wattmeter?

Select	Answer
A	Standing wave ratio
B	RF interference
C	Antenna front-to-back ratio
D	Radio wave propagation

16. - G4C07

What is one good way to avoid unwanted effects of stray RF energy in an amateur station?

Select	Answer
A	Install an RF filter in series with the ground wire
B	Install a few ferrite beads on the ground wire where it connects to your station
C	Connect all equipment grounds together
D	Use a ground loop for best conductivity

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

18. - G4E11

Which of the following is a disadvantage of using wind as the primary source of power for an emergency station?

Select	Answer
A	The conversion efficiency from mechanical energy to electrical energy is less than 2 percent
B	All of these choices are correct
C	A large energy storage system is needed to supply power when the wind is not blowing
D	The voltage and current ratings of such systems are not compatible with amateur equipment

19. - G5A02

What is reactance?

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

20. - G5B07

What value of an AC signal produces the same power dissipation in a resistor as a DC voltage of the same value?

Select	Answer
A	The reciprocal of the RMS value
B	The peak-to-peak value
C	The peak value
D	The RMS value

21. - G5C12

What is the capacitance of a 20 microfarad capacitor connected in series with a 50 microfarad capacitor?

Select	Answer
A	0.07 microfarads
B	1000 microfarads
C	14.3 microfarads
D	70 microfarads

22. - G6A17

Which of the following is a reason not to use wire-wound resistors in an RF circuit?

Select	Answer
A	The resistor's internal capacitance would detune the circuit
B	The resistor could overheat
C	The resistor's tolerance value would not be adequate for such a circuit
D	The resistor's inductance could make circuit performance unpredictable

23. - G6B12

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

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

24. - G7A06

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

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

25. - G7B10

Which of the following is a characteristic of a Class A amplifier?

Select	Answer
A	Low distortion
B	No need for bias
C	Low standby power
D	High Efficiency

26. - G7C09

Which of the following is needed for a Digital Signal Processor IF filter?

Select	Answer
A	An analog to digital converter
B	All of the these choices are correct
C	A digital to analog converter
D	A digital processor chip

27. - G8A11

What is the modulation envelope of an AM signal?

Select	Answer
A	The carrier frequency that contains the signal
B	The waveform created by connecting the peak values of the modulated signal
C	The bandwidth of the modulated signal
D	Spurious signals that envelop nearby frequencies

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	Pre-emphasis network
D	Multiplier

29. - G8C12

Which type of code is used for sending characters in a PSK31 signal?

Select	Answer
A	Varicode
B	Binary
C	Viterbi
D	Volumetric

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

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 peaks at about 1/8 wavelength from the end
C	It steadily increases
D	It steadily decreases

32. - G9C12

Which of the following is an advantage of using a gamma match for impedance matching of a Yagi antenna to 50 ohm coax feed line?

Select	Answer
A	It is useful for matching multiband antennas
B	It does not require that the elements be insulated from the boom
C	All of these choices are correct
D	It does not require any inductors or capacitors

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. - G0A10

What is one thing that can be done if evaluation shows that a neighbor might receive more than the allowable limit of RF exposure from the main lobe of a directional antenna?

Select	Answer
A	Take precautions to ensure that the antenna cannot be pointed in their direction
B	Post a warning sign that is clearly visible to the neighbor
C	Change to a non-polarized antenna with higher gain
D	Use an antenna with a higher front-to-back ratio

35. - G0B15

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

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