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. - G1A02

On which of the following bands is phone operation prohibited?

Select	Answer
A	17 meters
B	160 meters
C	30 meters
D	12 meters

2. - G1B12

Who or what determines "good engineering and good amateur practice" as applied to the operation of an amateur station in all respects not covered by the Part 97 rules?

Select	Answer
A	The IEEE
B	The Control Operator
C	The ITU
D	The FCC

3. - G1C03

What is the maximum bandwidth permitted by FCC rules for Amateur Radio stations transmitting on USB frequencies in the 60-meter band?

Select	Answer
A	5.6 kHz
B	1.8 kHz
C	2.8 kHz
D	3 kHz

4. - G1D09

How long is a Certificate of Successful Completion of Examination (CSCE) valid for exam element credit?

Select	Answer
A	For as long as your current license is valid
B	30 days
C	180 days
D	365 days

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

6. - G2A09

Why do most amateur stations use lower sideband on the 160-meter, 75-meter and 40-meter bands?

Select	Answer
A	Because it is fully compatible with an AM detector
B	Lower sideband is more efficient than upper sideband at these frequencies
C	Current amateur practice is to use lower sideband on these frequency bands
D	Lower sideband is the only sideband legal on these frequency bands

7. - G2B05

What is the customary minimum frequency separation between SSB signals under normal conditions?

Select	Answer
A	Approximately 10 kHz
B	Approximately 6 kHz
C	Approximately 3 kHz
D	Between 150 and 500 Hz

8. - G2C02

What should you do if a CW station sends "QRS"?

Select	Answer
A	Repeat everything twice
B	Send slower
C	Increase your power
D	Change 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	Hunters have an opportunity to transmit on non-amateur frequencies
C	Identification of out of band operation
D	Identification of different call signs

10. - G2E07

What segment of the 80-meter band is most commonly used for digital transmissions?

Select	Answer
A	3570 - 3600 kHz
B	3500 - 3525 kHz
C	3775 - 3825 kHz
D	3700 - 3750 kHz

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

12. - G3B12

What factor or factors affect the MUF?

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

13. - G3C09

What type of radio wave propagation allows a signal to be detected at a distance too far for ground wave propagation but too near for normal sky-wave propagation?

Select	Answer
A	Sporadic-E skip
B	Short-path skip
C	Faraday rotation
D	Scatter

14. - G4A11

Which of the following is a use for the IF shift control on a receiver?

Select	Answer
A	To permit listening on a different frequency from that on which you are transmitting
B	To avoid interference from stations very close to the receive frequency
C	To change frequency rapidly
D	To tune in stations that are slightly off frequency without changing your transmit frequency

15. - G4B13

What is a use for an antenna analyzer other than measuring the SWR of an antenna system?

Select	Answer
A	Determining the gain of a directional antenna
B	Measuring the front to back ratio of an antenna
C	Determining the impedance of an unknown or unmarked coaxial cable
D	Measuring the turns ratio of a power transformer

16. - G4C01

Which of the following might be useful in reducing RF interference to audio frequency devices?

Select	Answer
A	Forward-biased diode
B	Reverse-biased diode
C	Bypass capacitor
D	Bypass inductor

17. - G4D04

What does an S meter measure?

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

18. - G4E01

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

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

19. - G5A13

Which of the following devices can be used for impedance matching at radio frequencies?

Select	Answer
A	A length of transmission line
B	A transformer
C	All of these choices are correct
D	A Pi-network

20. - G5B09

What is the RMS voltage of a sine wave with a value of 17 volts peak?

Select	Answer
A	34 volts
B	12 volts
C	24 volts
D	8.5 volts

21. - G5C03

Which of the following components should be added to an existing resistor to increase the resistance?

Select	Answer
A	A resistor in parallel
B	A capacitor in series
C	A resistor in series
D	A capacitor in parallel

22. - G6A01

What is the minimum allowable discharge voltage for maximum life of a standard 12 volt lead acid battery?

Select	Answer
A	10.5 volts
B	6 volts
C	8.5 volts
D	12 volts

23. - G6B07

Which of the following is an advantage of an LED indicator compared to an incandescent indicator?

Select	Answer
A	Longer life
B	Lower power consumption
C	Faster response time
D	All of these choices are correct

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

25. - G7B06

What is a shift register?

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

26. - G7C10

How is Digital Signal Processor filtering accomplished?

Select	Answer
A	By converting the signal from analog to digital and using digital processing
B	By differential spurious phasing
C	By using direct signal phasing
D	By converting the signal from digital to analog and taking the difference of mixing products

27. - G8A11

What is the modulation envelope of an AM signal?

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

28. - G8B08

Why is it important to know the duty cycle of the mode you are using when transmitting?

Select	Answer
A	Some modes have high duty cycles which could exceed the transmitter's average power rating.
B	To allow time for the other station to break in during a transmission
C	To aid in tuning your transmitter
D	All of these choices are correct

29. - G8C02

How many data bits are sent in a single PSK31 character?

Select	Answer
A	The number varies
B	5
C	7
D	8

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	5 to 1
C	1 to 1
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 increases
B	It stays the same
C	It reaches a maximum at an angle of 45 degrees
D	It decreases

32. - G9C11

What is the purpose of a gamma match used with Yagi antennas?

Select	Answer
A	To match the relatively low feed point impedance to 50 ohms
B	To increase the main lobe gain
C	To match the relatively high feed point impedance to 50 ohms
D	To increase the front-to-back ratio

33. - G9D03

At what height above ground is an NVIS antenna typically installed?

Select	Answer
A	Height is not critical as long as it is significantly more than 1/2 wavelength
B	As close to one wavelength as possible
C	As close to 1/2 wavelength as possible
D	Between 1/10 and 1/4 wavelength

34. - G0A08

Which of the following steps must an amateur operator take to ensure compliance with RF safety regulations when transmitter power exceeds levels specified in FCC Part 97.13?

Select	Answer
A	Post a copy of FCC Part 97.13 in the station
B	All of these choices are correct
C	Post a copy of OET Bulletin 65 in the station
D	Perform a routine RF exposure evaluation

35. - G0B13

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

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