US Amateur Radio - General (Element 3, 2015-2019) Practice Test

Anonymous User

US Amateur Radio - General (Element 3, 2015-2019) Practice Test

Logging in (or registering) will help the system to select questions that you need to focus on.

1. - G1A04

Which of the following amateur bands is restricted to communication on only specific channels, rather than frequency ranges?

Select	Answer
A	30 meters
B	60 meters
C	11 meters
D	12 meters

2. - G1B01

What is the maximum height above ground to which an antenna structure may be erected without requiring notification to the FAA and registration with the FCC, provided it is not at or near a public use airport?

Select	Answer
A	300 feet
B	200 feet
C	100 feet
D	50 feet

3. - G1C10

What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 10-meter band?

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

4. - G1D09

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

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

5. - G1E05

What types of messages for a third party in another country may be transmitted by an amateur station?

Select	Answer
A	Any messages, as long as the text of the message is recorded in the station log
B	Any message, as long as the amateur operator is not paid
C	Only messages for other licensed amateurs
D	Only messages relating to Amateur Radio or remarks of a personal character, or messages relating to emergencies or disaster relief

6. - G2A08

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

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

7. - G2B10

When may the FCC restrict normal frequency operations of amateur stations participating in RACES?

Select	Answer
A	When they seize your equipment for use in disaster communications
B	Only when all amateur stations are instructed to stop transmitting
C	When the President's War Emergency Powers have been invoked
D	When they declare a temporary state of communication emergency

8. - G2C07

When sending CW, what does a "C" mean when added to the RST report?

Select	Answer
A	100 percent copy
B	Chirpy or unstable signal
C	Key clicks
D	Report was read from an S meter rather than estimated

9. - G2D01

What is the Amateur Auxiliary to the FCC?

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

10. - G2E02

How can a PACTOR modem or controller be used to determine if the channel is in use by other PACTOR stations?

Select	Answer
A	Unplug the data connector temporarily and see if the channel-busy indication is turned off
B	Transmit UI packets several times and wait to see if there is a response from another PACTOR station
C	Put the modem or controller in a mode which allows monitoring communications without a connection
D	Send the message: "Is this frequency in use?"

11. - G3A06

What is a geomagnetic storm?

Select	Answer
A	A sudden drop in the solar flux index
B	A temporary disturbance in the Earth's magnetosphere
C	Ripples in the ionosphere
D	A thunderstorm which affects radio propagation

12. - G3B02

Which of the following is a good indicator of the possibility of sky-wave propagation on the 6-meter band?

Select	Answer
A	Long skip sky-wave propagation on the 10-meter band
B	Severe attenuation of signals on the 10-meter band
C	Short skip sky-wave propagation on the 10-meter band
D	Long delayed echoes on the 10-meter band

13. - G3C05

Why is long distance communication on the 40-meter, 60-meter, 80-meter and 160-meter bands more difficult during the day?

Select	Answer
A	The F layer is unstable during daylight hours
B	The E layer is unstable during daylight hours
C	The F layer absorbs signals at these frequencies during daylight hours
D	The D layer absorbs signals at these frequencies during daylight hours

14. - G4A12

Which of the following is a common use for the dual VFO feature on a transceiver?

Select	Answer
A	To permit monitoring of two different frequencies
B	To permit full duplex operation, that is transmitting and receiving at the same time
C	To facilitate computer interface
D	To allow transmitting on two frequencies at once

15. - G4B03

Which of the following is the best instrument to use when checking the keying waveform of a CW transmitter?

Select	Answer
A	A field strength meter
B	An oscilloscope
C	A wavemeter
D	A sidetone monitor

16. - G4C04

What is the effect on an audio device or telephone system if there is interference from a nearby CW transmitter?

Select	Answer
A	A CW signal at a nearly pure audio frequency
B	Severely distorted audio
C	On-and-off humming or clicking
D	A chirpy CW signal

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

18. - G4E03

Which of the following direct, fused power connections would be the best for a 100 watt HF mobile installation?

Select	Answer
A	To the battery using heavy gauge wire
B	To the battery using resistor wire
C	To the alternator or generator using heavy gauge wire
D	To the alternator or generator using resistor wire

19. - G5A04

Which of the following causes opposition to the flow of alternating current in a capacitor?

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

21. - G5C09

What is the capacitance of three 100 microfarad capacitors connected in series?

Select	Answer
A	300 microfarads
B	33.3 microfarads
C	0.30 microfarads
D	0.33 microfarads

22. - G6A06

Which of the following is an advantage of using a Schottky diode in an RF switching circuit rather than a standard silicon diode?

Select	Answer
A	Lower inductance
B	Longer switching times
C	Lower capacitance
D	Higher breakdown voltage

23. - G6B03

Which of the following is an advantage of CMOS integrated circuits compared to TTL integrated circuits?

Select	Answer
A	Low power consumption
B	Better suited for RF amplification
C	High power handling capability
D	Better suited for power supply regulation

24. - G7A03

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

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

25. - G7B03

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

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

26. - G7C10

How is Digital Signal Processor filtering accomplished?

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

27. - G8A08

Which of the following is an effect of overmodulation?

Select	Answer
A	Insufficient audio
B	Excessive bandwidth
C	Frequency drift
D	Insufficient bandwidth

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	Quadrature noise
B	Image response
C	Mixer interference
D	Intermediate interference

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. - G9A14

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

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

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

32. - G9C07

What does "front-to-back ratio" mean in reference to a Yagi antenna?

Select	Answer
A	The number of directors versus the number of reflectors
B	The relative position of the driven element with respect to the reflectors and directors
C	The power radiated in the major radiation lobe compared to the power radiated in exactly the opposite direction
D	The ratio of forward gain to dipole gain

33. - G9D04

What is the primary purpose of antenna traps?

Select	Answer
A	To notch spurious frequencies
B	To prevent out of band operation
C	To provide balanced feed point impedance
D	To permit multiband operation

34. - G0A03

How can you determine that your station complies with FCC RF exposure regulations?

Select	Answer
A	All of these choices are correct
B	By measurement of field strength using calibrated equipment
C	By calculation based on computer modeling
D	By calculation based on FCC OET Bulletin 65

35. - G0B06

Why must the metal enclosure of every item of station equipment be grounded?

Select	Answer
A	It ensures that hazardous voltages cannot appear on the chassis
B	It ensures that the neutral wire is grounded
C	It prevents a blown fuse in the event of an internal short circuit
D	It prevents signal overload