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	160 meters
B	12 meters
C	17 meters
D	30 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	All of these choices are correct
C	In conformance with Amateur Radio custom
D	In conformance with the rules of the IARU

3. - G1C08

What is the maximum symbol rate permitted for RTTY or data emission transmitted at frequencies below 28 MHz?

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

4. - G1D07

Volunteer Examiners are accredited by what organization?

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

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	The control operator of the interrogating station must hold an Extra Class license
C	The station initiating the contact must be under local or remote control
D	No third party traffic maybe be transmitted

6. - G2A11

What does the expression "CQ DX" usually indicate?

Select	Answer
A	The caller is looking for any station outside their own country
B	The caller is listening for a station in Germany
C	A general call for any station
D	A distress call

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	Immediately cease all transmissions
D	Continue your communication because you were on the frequency first

8. - G2C10

What does the Q signal "QRN" mean?

Select	Answer
A	Zero beat my signal
B	I am troubled by static
C	Stop sending
D	Send more slowly

9. - G2D01

What is the Amateur Auxiliary to the FCC?

Select	Answer
A	Amateur volunteers who conduct frequency coordination for amateur VHF repeaters
B	Amateur volunteers who are formally enlisted to monitor the airwaves for rules violations
C	Amateur volunteers who use their station equipment to help civil defense organizations in times of emergency
D	Amateur volunteers who conduct amateur licensing examinations

10. - G2E14

What could be wrong if you cannot decode an RTTY or other FSK signal even though it is apparently tuned in properly?

Select	Answer
A	All of these choices are correct
B	You may be listening on the wrong sideband
C	The mark and space frequencies may be reversed
D	You may have selected the wrong baud rate

11. - G3A02

What effect does a Sudden Ionospheric Disturbance have on the daytime ionospheric propagation of HF radio waves?

Select	Answer
A	It disrupts signals on lower frequencies more than those on higher frequencies
B	It enhances propagation on all HF frequencies
C	It disrupts communications via satellite more than direct communications
D	None, because only areas on the night side of the Earth are affected

12. - G3B11

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

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

13. - G3C01

Which ionospheric layer is closest to the surface of the Earth?

Select	Answer
A	The F2 layer
B	The E layer
C	The D layer
D	The F1 layer

14. - G4A05

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

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

15. - G4B12

What problem can occur when making measurements on an antenna system with an antenna analyzer?

Select	Answer
A	Connecting the analyzer to an antenna can cause it to absorb harmonics
B	Permanent damage to the analyzer may occur if it is operated into a high SWR
C	Strong signals from nearby transmitters can affect the accuracy of measurements
D	The analyzer can be damaged if measurements outside the ham bands are attempted

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

17. - G4D09

What frequency range is occupied by a 3 kHz USB signal with the displayed carrier frequency set to 14.347 MHz?

Select	Answer
A	14.344 to 14.347 MHz
B	14.347 to 14.647 MHz
C	14.3455 to 14.3485 MHz
D	14.347 to 14.350 MHz

18. - G4E10

What is the reason that a series diode is connected between a solar panel and a storage battery that is being charged by the panel?

Select	Answer
A	The diode serves to regulate the charging voltage to prevent overcharge
B	The diode limits the current flowing from the panel to a safe value
C	The diode greatly increases the efficiency during times of high illumination
D	The diode prevents self-discharge of the battery though the panel during times of low or no illumination

19. - G5A01

What is impedance?

Select	Answer
A	The inverse of resistance
B	The force of repulsion between two similar electric fields
C	The opposition to the flow of current in an AC circuit
D	The electric charge stored by a capacitor

20. - G5B09

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

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

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. - G6A05

What is the approximate junction threshold voltage of a conventional silicon diode?

Select	Answer
A	0.7 volts
B	0.1 volt
C	1.0 volts
D	0.3 volts

23. - G6B12

Which of the following connectors would be a good choice for a serial data port?

Select	Answer
A	Type SMA
B	PL-259
C	DE-9
D	Type N

24. - G7A03

What is the peak-inverse-voltage across the rectifiers in a full-wave bridge power supply?

Select	Answer
A	One-quarter the normal output voltage of the power supply
B	Equal to the normal peak output voltage of the power supply
C	Double the normal peak output voltage of the power supply
D	Half the normal output voltage of the power supply

25. - G7B09

What determines the frequency of an LC oscillator?

Select	Answer
A	The inductance and capacitance in the tank circuit
B	The number of stages in the counter
C	The time delay of the lag circuit
D	The number of stages in the divider

26. - G7C09

Which of the following is needed for a Digital Signal Processor IF filter?

Select	Answer
A	An analog to digital converter
B	A digital to analog converter
C	A digital processor chip
D	All of the these choices are correct

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	Available transmitter power can be used more effectively
C	Audio fidelity is improved
D	Simpler receiving equipment can be used

28. - G8B01

What receiver stage combines a 14.250 MHz input signal with a 13.795 MHz oscillator signal to produce a 455 kHz intermediate frequency (IF) signal?

Select	Answer
A	Mixer
B	VFO
C	Discriminator
D	BFO

29. - G8C07

How does the receiving station respond to an ARQ data mode packet containing errors?

Select	Answer
A	It requests the packet be retransmitted
B	It terminates the contact
C	It requests a change in transmitting protocol
D	It sends the packet back to the transmitting station

30. - G9A14

What is the interaction between high standing wave ratio (SWR) and transmission line loss?

Select	Answer
A	If a transmission line is lossy, high SWR will increase the loss
B	High SWR reduces the relative effect of transmission line loss
C	High SWR makes it difficult to measure transmission line loss
D	There is no interaction between transmission line loss and SWR

31. - G9B12

What is the approximate length for a 1/4 wave vertical antenna cut for 28.5 MHz?

Select	Answer
A	21 feet
B	16 feet
C	8 feet
D	11 feet

32. - G9C15

Approximately how long is each side of the reflector element of a quad antenna?

Select	Answer
A	Slightly less than 1/4 wavelength
B	Slightly less than 1/2 wavelength
C	Slightly more than 1/4 wavelength
D	Slightly more than 1/2 wavelength

33. - G9D05

What is an advantage of vertical stacking of horizontally polarized Yagi antennas?

Select	Answer
A	It narrows the main lobe in elevation
B	It narrows the main lobe in azimuth
C	It allows simultaneous vertical and horizontal polarization
D	It allows quick selection of vertical or horizontal polarization

34. - G0A12

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

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

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