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. - G1A08

Which of the following frequencies is within the General Class portion of the 80-meter band?

Select	Answer
A	3650 kHz
B	3560 kHz
C	2560 kHz
D	1855 kHz

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

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	56 kilobaud
B	1200 baud
C	19.6 kilobaud
D	300 baud

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	180 days
C	365 days
D	30 days

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	No third party traffic maybe be transmitted
B	The interrogating transmission must be made by another automatically controlled station
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. - G2A03

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

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

7. - G2B02

What is the first thing you should do if you are communicating with another amateur station and hear a station in distress break in?

Select	Answer
A	Acknowledge the station in distress and determine what assistance may be needed
B	Change to a different frequency
C	Continue your communication because you were on the frequency first
D	Immediately cease all transmissions

8. - G2C11

What does the Q signal "QRV" mean?

Select	Answer
A	I am ready to receive messages
B	There is interference on the frequency
C	I am quitting for the day
D	You are sending too fast

9. - G2D07

Which of the following is required by the FCC rules when operating in the 60-meter band?

Select	Answer
A	If you are using other than a dipole antenna, you must keep a record of the gain of your antenna
B	You must keep a record of the date, time, frequency, power level and stations worked
C	You must keep a record of the manufacturer of your equipment and the antenna used
D	You must keep a record of all third party traffic

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. - G3A15

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

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

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

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

14. - G4A05

What is a reason to use Automatic Level Control (ALC) with an RF power amplifier?

Select	Answer
A	To reduce harmonic radiation
B	To increase overall efficiency
C	To balance the transmitter audio frequency response
D	To reduce distortion due to excessive drive

15. - G4B11

Which of the following must be connected to an antenna analyzer when it is being used for SWR measurements?

Select	Answer
A	Receiver
B	Antenna and feed line
C	All of these choices are correct
D	Transmitter

16. - G4C02

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

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

17. - G4D02

Which of the following describes how a speech processor affects a transmitted single sideband phone signal?

Select	Answer
A	It increases average power
B	It reduces harmonic distortion
C	It reduces intermodulation distortion
D	It increases peak power

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. - G5A09

What unit is used to measure reactance?

Select	Answer
A	Ampere
B	Ohm
C	Farad
D	Siemens

20. - G5B03

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

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

21. - G5C15

What is the total resistance of a 10 ohm, a 20 ohm, and a 50 ohm resistor connected in parallel?

Select	Answer
A	10000 ohms
B	0.17 ohms
C	80 ohms
D	5.9 ohms

22. - G6A18

What is an advantage of using a ferrite core toroidal inductor?

Select	Answer
A	Most of the magnetic field is contained in the core
B	Large values of inductance may be obtained
C	The magnetic properties of the core may be optimized for a specific range of frequencies
D	All of these choices are correct

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	Microphone and transceiver
C	Amplifier and antenna
D	Computer and transceiver

24. - G7A06

What portion of the AC cycle is converted to DC by a full-wave rectifier?

Select	Answer
A	90 degrees
B	270 degrees
C	360 degrees
D	180 degrees

25. - G7B03

Which of the following describes the function of a two input AND gate?

Select	Answer
A	Output is low when either or both inputs are high
B	Output is high only when both inputs are high
C	Output is high when either or both inputs are low
D	Output is low only when both inputs are high

26. - G7C03

What circuit is used to process signals from the RF amplifier and local oscillator then send the result to the IF filter in a superheterodyne receiver?

Select	Answer
A	Balanced modulator
B	IF amplifier
C	Detector
D	Mixer

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 conversion
C	Frequency convolution
D	Frequency modulation

28. - G8B10

What is the relationship between transmitted symbol rate and bandwidth?

Select	Answer
A	Symbol rate and bandwidth are not related
B	Lower symbol rates require wider bandwidth
C	Bandwidth is always half the symbol rate
D	Higher symbol rates require wider bandwidth

29. - G8C10

How does forward error correction (FEC) allow the receiver to correct errors in received data packets?

Select	Answer
A	By using the varicode character set
B	By controlling transmitter output power for optimum signal strength
C	By using a parity bit with each character
D	By transmitting redundant information with the data

30. - G9A05

How does the attenuation of coaxial cable change as the frequency of the signal it is carrying increases?

Select	Answer
A	Attenuation reaches a maximum at approximately 18 MHz
B	Attenuation increases
C	Attenuation is independent of frequency
D	Attenuation decreases

31. - G9B07

How does the feed point impedance of a 1/2 wave dipole antenna change as the antenna is lowered below 1/4 wave above ground?

Select	Answer
A	It steadily increases
B	It is unaffected by the height above ground
C	It steadily decreases
D	It peaks at about 1/8 wavelength above ground

32. - G9C18

What happens when the feed point of a quad antenna of any shape is moved from the midpoint of the top or bottom to the midpoint of either side?

Select	Answer
A	There is no change in polarization
B	The polarization of the radiated signal changes from horizontal to vertical
C	The polarization of the radiated signal changes from vertical to horizontal
D	The radiated signal becomes circularly polarized

33. - G9D10

Which of the following describes a Beverage antenna?

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

34. - G0A10

What is one thing that can be done if evaluation shows that a neighbor might receive more than the allowable limit of RF exposure from the main lobe of a directional antenna?

Select	Answer
A	Post a warning sign that is clearly visible to the neighbor
B	Change to a non-polarized antenna with higher gain
C	Take precautions to ensure that the antenna cannot be pointed in their direction
D	Use an antenna with a higher front-to-back ratio

35. - G0B04

Which of the following is a primary reason for not placing a gasoline-fueled generator inside an occupied area?

Select	Answer
A	Danger of engine over torque
B	Lack of nitrogen for adequate combustion
C	Danger of carbon monoxide poisoning
D	Lack of oxygen for adequate combustion