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. - G1A01

On which of the following bands is a General Class license holder granted all amateur frequency privileges?

Select	Answer
A	60, 20, 17, and 12 meters
B	160, 60, 30, 17, 12, and 10 meters
C	160, 30, 17, 15, 12, and 10 meters
D	160, 80, 40, and 10 meters

2. - G1B10

What is the power limit for beacon stations?

Select	Answer
A	10 watts PEP output
B	200 watts PEP output
C	20 watts PEP output
D	100 watts PEP output

3. - G1C07

What is the maximum symbol rate permitted for RTTY or data emission transmission on the 20-meter band?

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

4. - G1D08

Which of the following criteria must be met for a non-U.S. citizen to be an accredited Volunteer Examiner?

Select	Answer
A	The person's home citizenship must be in ITU region 2
B	The person must hold an FCC granted Amateur Radio license of General Class or above
C	The person must be a resident of the U.S. for a minimum of 5 years
D	None of these choices is correct; a non-U.S. citizen cannot be a Volunteer Examiner

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

6. - G2A08

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

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

7. - G2B04

When selecting a CW transmitting frequency, what minimum separation should be used to minimize interference to stations on adjacent frequencies?

Select	Answer
A	150 to 500 Hz
B	5 to 50 Hz
C	3 to 6 kHz
D	1 to 3 kHz

8. - G2C09

What does the Q signal "QSL" mean?

Select	Answer
A	We have already confirmed by card
B	I acknowledge receipt
C	We have worked before
D	Send slower

9. - G2D08

What is a reason why many amateurs keep a station log?

Select	Answer
A	The log provides evidence of operation needed to renew a license without retest
B	To help with a reply if the FCC requests information
C	The ITU requires a log of all international contacts
D	The ITU requires a log of all international third party traffic

10. - G2E03

What symptoms may result from other signals interfering with a PACTOR or WINMOR transmission?

Select	Answer
A	Long pauses in message transmission
B	Failure to establish a connection between stations
C	Frequent retries or timeouts
D	All of these choices are correct

11. - G3A11

Approximately how long is the typical sunspot cycle?

Select	Answer
A	8 minutes
B	11 years
C	40 hours
D	28 days

12. - G3B04

What is a reliable way to determine if the MUF is high enough to support skip propagation between your station and a distant location on frequencies between 14 and 30 MHz?

Select	Answer
A	Check the strength of TV signals from Western Europe
B	Listen for signals from an international beacon in the frequency range you plan to use
C	Send a series of dots on the band and listen for echoes from your signal
D	Check the strength of signals in the MF AM broadcast band

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

14. - G4A07

What condition can lead to permanent damage to a solid-state RF power amplifier?

Select	Answer
A	Insufficient drive power
B	Shorting the input signal to ground
C	Low input SWR
D	Excessive drive power

15. - G4B14

What is an instance in which the use of an instrument with analog readout may be preferred over an instrument with a digital readout?

Select	Answer
A	When testing logic circuits
B	When measuring the frequency of an oscillator
C	When adjusting tuned circuits
D	When high precision is desired

16. - G4C05

What might be the problem if you receive an RF burn when touching your equipment while transmitting on an HF band, assuming the equipment is connected to a ground rod?

Select	Answer
A	Flat braid rather than round wire has been used for the ground wire
B	The ground wire has high impedance on that frequency
C	Insulated wire has been used for the ground wire
D	The ground rod is resonant

17. - G4D07

How much must the power output of a transmitter be raised to change the S meter reading on a distant receiver from S8 to S9?

Select	Answer
A	Approximately 4 times
B	Approximately 8 times
C	Approximately 2 times
D	Approximately 1.5 times

18. - G4E07

Which of the following may cause interference to be heard in the receiver of an HF radio installed in a recent model vehicle?

Select	Answer
A	The battery charging system
B	All of these choices are correct
C	The fuel delivery system
D	The vehicle control computer

19. - G5A03

Which of the following causes opposition to the flow of alternating current in an inductor?

Select	Answer
A	Conductance
B	Reactance
C	Reluctance
D	Admittance

20. - G5B10

What percentage of power loss would result from a transmission line loss of 1 dB?

Select	Answer
A	10.9 percent
B	12.2 percent
C	25.9 percent
D	20.5 percent

21. - G5C02

What happens if you reverse the primary and secondary windings of a 4:1 voltage step down transformer?

Select	Answer
A	The secondary voltage becomes 4 times the primary voltage
B	The transformer no longer functions as it is a unidirectional device
C	Additional resistance must be added in series with the primary to prevent overload
D	Additional resistance must be added in parallel with the secondary to prevent overload

22. - G6A04

When is it acceptable to recharge a carbon-zinc primary cell?

Select	Answer
A	When a constant current charger is used
B	When the cell is kept warm during the recharging period
C	As long as the voltage has not been allowed to drop below 1.0 volt
D	Never

23. - G6B02

What is meant by the term MMIC?

Select	Answer
A	Multi Megabyte Integrated Circuit
B	Military Manufactured Integrated Circuit
C	Mode Modulated Integrated Circuit
D	Monolithic Microwave Integrated Circuit

24. - G7A13

Which symbol in Figure G7-1 represents a tapped inductor?

Select	Answer
A	Symbol 1
B	Symbol 6
C	Symbol 7
D	Symbol 11

25. - G7B06

What is a shift register?

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

26. - G7C06

What should be the impedance of a low-pass filter as compared to the impedance of the transmission line into which it is inserted?

Select	Answer
A	Twice the transmission line impedance
B	About the same
C	Substantially lower
D	Substantially higher

27. - G8A03

What is the name of the process that changes the instantaneous frequency of an RF wave to convey information?

Select	Answer
A	Frequency transformation
B	Frequency modulation
C	Frequency conversion
D	Frequency convolution

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. - G8C12

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

Select	Answer
A	Binary
B	Varicode
C	Volumetric
D	Viterbi

30. - G9A07

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

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

31. - G9B06

Where should the radial wires of a ground-mounted vertical antenna system be placed?

Select	Answer
A	On the surface of the Earth or buried a few inches below the ground
B	As high as possible above the ground
C	At the center of the antenna
D	Parallel to the antenna element

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

33. - G9D02

Which of the following is an advantage of an NVIS antenna?

Select	Answer
A	All of these choices are correct
B	High vertical angle radiation for working stations within a radius of a few hundred kilometers
C	Low vertical angle radiation for working stations out to ranges of several thousand kilometers
D	High forward gain

34. - G0A09

What type of instrument can be used to accurately measure an RF field?

Select	Answer
A	A calibrated field strength meter with a calibrated antenna
B	A receiver with an S meter
C	An oscilloscope with a high-stability crystal marker generator
D	An SWR meter with a peak-reading function

35. - G0B13

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

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

Figure G7-1