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	60 meters
B	11 meters
C	12 meters
D	30 meters

2. - G1B05

When may music be transmitted by an amateur station?

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

3. - G1C09

What is the maximum symbol rate permitted for RTTY or data emission transmitted on the 1.25-meter and 70-centimeter bands?

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

4. - G1D02

What license examinations may you administer when you are an accredited VE holding a General Class operator license?

Select	Answer
A	Technician only
B	General and Technician
C	General only
D	Extra, General and Technician

5. - G1E05

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

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

6. - G2A03

Which of the following is most commonly used for SSB voice communications in the VHF and UHF bands?

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

7. - G2B12

When is an amateur station allowed to use any means at its disposal to assist another station in distress?

Select	Answer
A	At any time when transmitting in an organized net
B	Only on authorized HF frequencies
C	At any time during an actual emergency
D	Only when transmitting in RACES

8. - G2C06

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

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

9. - G2D03

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

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

10. - G2E06

What is the most common frequency shift for RTTY emissions in the amateur HF bands?

Select	Answer
A	85 Hz
B	850 Hz
C	425 Hz
D	170 Hz

11. - G3A04

Which of the following are least reliable for long distance communications during periods of low solar activity?

Select	Answer
A	80 meters and 160 meters
B	30 meters and 20 meters
C	60 meters and 40 meters
D	15 meters, 12 meters and 10 meters

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

13. - G3C01

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

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

14. - G4A15

Which of the following can be a symptom of transmitted RF being picked up by an audio cable carrying AFSK data signals between a computer and a transceiver?

Select	Answer
A	The transmitter signal is distorted
B	All of these choices are correct
C	The VOX circuit does not un-key the transmitter
D	Frequent connection timeouts

15. - G4B12

What problem can occur when making measurements on an antenna system with an antenna analyzer?

Select	Answer
A	Permanent damage to the analyzer may occur if it is operated into a high SWR
B	The analyzer can be damaged if measurements outside the ham bands are attempted
C	Strong signals from nearby transmitters can affect the accuracy of measurements
D	Connecting the analyzer to an antenna can cause it to absorb harmonics

16. - G4C12

Which of the following is an advantage of a receiver DSP IF filter as compared to an analog filter?

Select	Answer
A	The DSP filter is much more effective at VHF frequencies
B	Mixing products are greatly reduced
C	A wide range of filter bandwidths and shapes can be created
D	Fewer digital components are required

17. - G4D03

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

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

18. - G4E09

What is the approximate open-circuit voltage from a fully illuminated silicon photovoltaic cell?

Select	Answer
A	0.02 VDC
B	0.5 VDC
C	0.2 VDC
D	1.38 VDC

19. - G5A12

What is one reason to use an impedance matching transformer?

Select	Answer
A	To minimize transmitter power output
B	To minimize radiation resistance
C	To reduce power supply ripple
D	To maximize the transfer of power

20. - G5B04

How many watts of electrical power are used by a 12 VDC light bulb that draws 0.2 amperes?

Select	Answer
A	2.4 watts
B	24 watts
C	60 watts
D	6 watts

21. - G5C06

What is the RMS voltage across a 500-turn secondary winding in a transformer if the 2250-turn primary is connected to 120 VAC?

Select	Answer
A	540 volts
B	26.7 volts
C	5.9 volts
D	2370 volts

22. - G6A09

Which of the following describes the construction of a MOSFET?

Select	Answer
A	The gate is formed by a back-biased junction
B	The source is formed by depositing metal on silicon
C	The source is separated from the drain by a thin insulating layer
D	The gate is separated from the channel with a thin insulating layer

23. - G6B10

What two devices in an Amateur Radio station might be connected using a USB interface?

Select	Answer
A	Power supply and amplifier
B	Computer and transceiver
C	Amplifier and antenna
D	Microphone and transceiver

24. - G7A04

What is the peak-inverse-voltage across the rectifier in a half-wave power supply?

Select	Answer
A	One-half the normal peak output voltage of the power supply
B	Equal to the normal output voltage of the power supply
C	One-half the normal output voltage of the power supply
D	Two times the normal peak output voltage of the power supply

25. - G7B06

What is a shift register?

Select	Answer
A	An analog mixer
B	A clocked array of circuits that passes data in steps along the array
C	A digital mixer
D	An array of operational amplifiers used for tri-state arithmetic operations

26. - G7C01

Which of the following is used to process signals from the balanced modulator then send them to the mixer in some single sideband phone transmitters?

Select	Answer
A	Carrier oscillator
B	IF amplifier
C	RF amplifier
D	Filter

27. - G8A06

What is one advantage of carrier suppression in a single sideband phone transmission versus full carrier amplitude modulation?

Select	Answer
A	Available transmitter power can be used more effectively
B	Audio fidelity is improved
C	Greater modulation percentage is obtainable with lower distortion
D	Simpler receiving equipment can be used

28. - G8B06

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

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

29. - G8C11

How are the two separate frequencies of a Frequency Shift Keyed (FSK) signal identified?

Select	Answer
A	On and Off
B	Dot and Dash
C	Mark and Space
D	High and Low

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

31. - G9B12

What is the approximate length for a 1/4 wave vertical antenna cut for 28.5 MHz?

Select	Answer
A	8 feet
B	11 feet
C	16 feet
D	21 feet

32. - G9C06

What configuration of the loops of a two-element quad antenna must be used for the antenna to operate as a beam antenna, assuming one of the elements is used as a reflector?

Select	Answer
A	The reflector element must be approximately 5 percent shorter than the driven element
B	The reflector element must be approximately 5 percent longer than the driven element
C	There must be an open circuit in the driven element at the point opposite the feed point
D	The driven element must be fed with a balun transformer

33. - G9D11

Which of the following is a disadvantage of multiband antennas?

Select	Answer
A	They have poor harmonic rejection
B	They must be fed with open wire line
C	They present low impedance on all design frequencies
D	They must be used with an antenna tuner

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	Ensure that you and the antenna structure are grounded
C	All of these choices are correct
D	Wear a radiation badge

35. - G0B13

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

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