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. - G1A03

On which of the following bands is image transmission prohibited?

Select	Answer
A	30 meters
B	12 meters
C	20 meters
D	160 meters

2. - G1B04

Which of the following must be true before amateur stations may provide communications to broadcasters for dissemination to the public?

Select	Answer
A	The FCC must have declared a state of emergency
B	All of these choices are correct
C	The communications must be approved by a local emergency preparedness official and conducted on officially designated frequencies
D	The communications must directly relate to the immediate safety of human life or protection of property and there must be no other means of communication reasonably available before or at the time of the event

3. - G1C02

What is the maximum transmitting power an amateur station may use on the 12-meter band?

Select	Answer
A	50 watts PEP output
B	1500 watts PEP output
C	200 watts PEP output
D	An effective radiated power equivalent to 100 watts from a half-wave dipole

4. - G1D07

Volunteer Examiners are accredited by what organization?

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

5. - G1E11

Which of the following is the FCC term for an unattended digital station that transfers messages to and from the Internet?

Select	Answer
A	Automatically controlled digital station
B	Robotically controlled station
C	Locally controlled station
D	Fail-safe digital station

6. - G2A06

Which of the following is an advantage when using single sideband as compared to other analog voice modes on the HF amateur bands?

Select	Answer
A	Ease of tuning on receive and immunity to impulse noise
B	Very high fidelity voice modulation
C	Less subject to interference from atmospheric static crashes
D	Less bandwidth used and greater power efficiency

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

8. - G2C10

What does the Q signal "QRN" mean?

Select	Answer
A	Send more slowly
B	I am troubled by static
C	Stop sending
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	When the contact is with amateurs in any country as long as the communication is conducted in English
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 is a member of the International Amateur Radio Union
D	Only when the foreign country has a formal third party agreement filed with the FCC

10. - G2E06

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

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

11. - G3A15

How long does it take charged particles from coronal mass ejections to affect radio propagation on the Earth?

Select	Answer
A	28 days
B	14 days
C	20 to 40 hours
D	4 to 8 minutes

12. - G3B11

What happens to HF propagation when the LUF exceeds the MUF?

Select	Answer
A	HF communications over the path are enhanced
B	Propagation over the path on all HF frequencies is enhanced
C	Double hop propagation along the path is more common
D	No HF radio frequency will support ordinary sky-wave communications over the path

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 E layer is unstable during daylight hours
B	The D layer absorbs signals at these frequencies during daylight hours
C	The F layer is unstable during daylight hours
D	The F layer absorbs signals at these frequencies during daylight hours

14. - G4A13

What is one reason to use the attenuator function that is present on many HF transceivers?

Select	Answer
A	To slow down received CW signals for better copy
B	To reduce signal overload due to strong incoming signals
C	To reduce the transmitter power when driving a linear amplifier
D	To reduce power consumption when operating from batteries

15. - G4B03

Which of the following is the best instrument to use when checking the keying waveform of a CW transmitter?

Select	Answer
A	A field strength meter
B	A wavemeter
C	A sidetone monitor
D	An oscilloscope

16. - G4C02

Which of the following could be a cause of interference covering a wide range of frequencies?

Select	Answer
A	Arcing at a poor electrical connection
B	Not using a balun or line isolator to feed balanced antennas
C	Lack of rectification of the transmitter's signal in power conductors
D	Using a balun to feed an unbalanced antenna

17. - G4D04

What does an S meter measure?

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

18. - G4E01

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

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

19. - G5A09

What unit is used to measure reactance?

Select	Answer
A	Farad
B	Siemens
C	Ohm
D	Ampere

20. - G5B03

How many watts of electrical power are used if 400 VDC is supplied to an 800 ohm load?

Select	Answer
A	200 watts
B	3200 watts
C	0.5 watts
D	400 watts

21. - G5C08

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

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

22. - G6A08

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

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

23. - G6B03

Which of the following is an advantage of CMOS integrated circuits compared to TTL integrated circuits?

Select	Answer
A	High power handling capability
B	Better suited for RF amplification
C	Low power consumption
D	Better suited for power supply regulation

24. - G7A12

Which symbol in Figure G7-1 represents a multiple-winding transformer?

Select	Answer
A	Symbol 4
B	Symbol 7
C	Symbol 1
D	Symbol 6

25. - G7B06

What is a shift register?

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

26. - G7C04

What circuit is used to combine signals from the IF amplifier and BFO and send the result to the AF amplifier in some single sideband receivers?

Select	Answer
A	Product detector
B	RF oscillator
C	IF filter
D	Balanced modulator

27. - G8A06

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

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

28. - G8B07

What is the frequency deviation for a 12.21 MHz reactance modulated oscillator in a 5 kHz deviation, 146.52 MHz FM phone transmitter?

Select	Answer
A	5 kHz
B	416.7 Hz
C	60 kHz
D	101.75 Hz

29. - G8C08

Which of the following statements is true about PSK31?

Select	Answer
A	Upper case letters make the signal stronger
B	Varicode Error Correction is used to ensure accurate message reception
C	Upper case letters use longer Varicode signals and thus slow down transmission
D	Higher power is needed as compared to RTTY for similar error rates

30. - G9A06

In what units is RF feed line loss usually expressed?

Select	Answer
A	Ohms per 1000 feet
B	Decibels per 1000 feet
C	Decibels per 100 feet
D	Ohms per 100 feet

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

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

33. - G9D09

Which of the following is an application for a Beverage antenna?

Select	Answer
A	Directional receiving for low HF bands
B	Portable direction finding at lower HF frequencies
C	Portable direction finding at higher HF frequencies
D	Directional transmitting for low HF bands

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 be installed such that it is protected against unauthorized access
C	It should not be installed in a wet area
D	It should not be installed higher than you can reach

35. - G0B03

Which size of fuse or circuit breaker would be appropriate to use with a circuit that uses AWG number 14 wiring?

Select	Answer
A	30 amperes
B	15 amperes
C	100 amperes
D	60 amperes

Figure G7-1