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	30 meters
C	11 meters
D	12 meters

2. - G1B11

How does the FCC require an amateur station to be operated in all respects not specifically covered by the Part 97 rules?

Select	Answer
A	In conformance with good engineering and good amateur practice
B	In conformance with the rules of the IARU
C	All of these choices are correct
D	In conformance with Amateur Radio custom

3. - G1C01

What is the maximum transmitting power an amateur station may use on 10.140 MHz?

Select	Answer
A	2000 watts PEP output
B	1500 watts PEP output
C	200 watts PEP output
D	1000 watts PEP output

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

5. - G1E03

What is required to conduct communications with a digital station operating under automatic control outside the automatic control band segments?

Select	Answer
A	The interrogating transmission must be made by another automatically controlled station
B	No third party traffic maybe be transmitted
C	The station initiating the contact must be under local or remote control
D	The control operator of the interrogating station must hold an Extra Class license

6. - G2A04

Which mode is most commonly used for voice communications on the 17-meter and 12-meter bands?

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

7. - G2B07

Which of the following complies with good amateur practice when choosing a frequency on which to initiate a call?

Select	Answer
A	Check to see if the channel is assigned to another station
B	All of these choices are correct
C	Identify your station by transmitting your call sign at least 3 times
D	Follow the voluntary band plan for the operating mode you intend to use

8. - G2C05

What is the best speed to use when answering a CQ in Morse code?

Select	Answer
A	At the standard calling speed of 5 wpm
B	The fastest speed at which you are comfortable copying
C	A slow speed until contact is established
D	The speed at which the CQ was sent

9. - G2D10

What is QRP operation?

Select	Answer
A	Remote piloted model control
B	Traffic relay procedure net operation
C	Low power transmit operation
D	Transmission using Quick Response Protocol

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. - G3A05

What is the solar flux index?

Select	Answer
A	Another name for the American sunspot number
B	A measure of solar radiation at 10.7 centimeters wavelength
C	A count of sunspots which is adjusted for solar emissions
D	A measure of the highest frequency that is useful for ionospheric propagation between two points on the Earth

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

13. - G3C11

Which of the following antenna types will be most effective for skip communications on 40-meters during the day?

Select	Answer
A	A vertical antenna
B	A left-hand circularly polarized antenna
C	A right-hand circularly polarized antenna
D	A horizontal dipole placed between 1/8 and 1/4 wavelength above the ground

14. - G4A13

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

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

15. - G4B02

Which of the following is an advantage of an oscilloscope versus a digital voltmeter?

Select	Answer
A	An oscilloscope uses less power
B	Input impedance is much lower
C	Complex impedances can be easily measured
D	Complex waveforms can be measured

16. - G4C01

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

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

17. - G4D11

How close to the upper edge of the 20-meter General Class band should your displayed carrier frequency be when using 3 kHz wide USB?

Select	Answer
A	At least 3 kHz above the edge of the band
B	Your displayed carrier frequency may be set at the edge of the band
C	At least 3 kHz below the edge of the band
D	At least 1 kHz below the edge of the segment

18. - G4E02

What is the purpose of a corona ball on a HF mobile antenna?

Select	Answer
A	To reduce high voltage discharge from the tip of the antenna
B	To increase the "Q" of the antenna
C	To reduce the chance of damage if the antenna should strike an object
D	To narrow the operating bandwidth of the antenna

19. - G5A03

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

Select	Answer
A	Conductance
B	Admittance
C	Reactance
D	Reluctance

20. - G5B03

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

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

21. - G5C01

What causes a voltage to appear across the secondary winding of a transformer when an AC voltage source is connected across its primary winding?

Select	Answer
A	Capacitive coupling
B	Mutual capacitance
C	Mutual inductance
D	Displacement current coupling

22. - G6A04

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

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

23. - G6B09

Which of the following is a characteristic of a liquid crystal display?

Select	Answer
A	It offers a wide dynamic range
B	It has a wide viewing angle
C	All of these choices are correct
D	It requires ambient or back lighting

24. - G7A10

Which symbol in figure G7-1 represents a Zener diode?

Select	Answer
A	Symbol 4
B	Symbol 11
C	Symbol 1
D	Symbol 5

25. - G7B02

Which of the following is an advantage of using the binary system when processing digital signals?

Select	Answer
A	Binary numbers are more compatible with analog circuitry
B	The binary number system is most accurate
C	Binary "ones" and "zeros" are easy to represent by an "on" or "off" state
D	All of these choices are correct

26. - G7C11

What is meant by the term "software defined radio" (SDR)?

Select	Answer
A	A radio in which most major signal processing functions are performed by software
B	A radio that uses crystal filters designed using software
C	A radio that provides computer interface for automatic logging of band and frequency
D	A computer model that can simulate performance of a radio to aid in the design process

27. - G8A06

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

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

28. - G8B02

If a receiver mixes a 13.800 MHz VFO with a 14.255 MHz received signal to produce a 455 kHz intermediate frequency (IF) signal, what type of interference will a 13.345 MHz signal produce in the receiver?

Select	Answer
A	Image response
B	Intermediate interference
C	Mixer interference
D	Quadrature noise

29. - G8C01

Which of the following digital modes is designed to operate at extremely low signal strength on the HF bands?

Select	Answer
A	RTTY
B	Clover
C	FSK441 and Hellschreiber
D	JT9 and JT65

30. - G9A13

What standing wave ratio will result when connecting a 50 ohm feed line to an antenna that has a purely resistive 300 ohm feed point impedance?

Select	Answer
A	You cannot determine SWR from impedance values
B	1.5:1
C	6:1
D	3:1

31. - G9B11

What is the approximate length for a 1/2 wave dipole antenna cut for 3.550 MHz?

Select	Answer
A	84 feet
B	42 feet
C	131 feet
D	263 feet

32. - G9C14

How does the forward gain of a two-element quad antenna compare to the forward gain of a three-element Yagi antenna?

Select	Answer
A	About 2/3 as much
B	About twice as much
C	About the same
D	About 1.5 times as much

33. - G9D10

Which of the following describes a Beverage antenna?

Select	Answer
A	A very long and low directional receiving antenna
B	A broad-band mobile antenna
C	A vertical antenna
D	A helical antenna for space reception

34. - G0A12

What precaution should you take whenever you make adjustments or repairs to an antenna?

Select	Answer
A	All of these choices are correct
B	Ensure that you and the antenna structure are grounded
C	Wear a radiation badge
D	Turn off the transmitter and disconnect the feed line

35. - G0B07

Which of these choices should be observed when climbing a tower using a safety belt or harness?

Select	Answer
A	All of these choices are correct
B	Never lean back and rely on the belt alone to support your weight
C	Ensure that all heavy tools are securely fastened to the belt D-ring
D	Confirm that the belt is rated for the weight of the climber and that it is within its allowable service life

Figure G7-1