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

2. - G1B09

When may an amateur station transmit communications in which the licensee or control operator has a pecuniary (monetary) interest?

Select	Answer
A	When other amateurs are being notified of the sale of any item with a monetary value less than $200 and such activity is not done on a regular basis
B	When other amateurs are being notified of the sale of apparatus normally used in an amateur station and such activity is not done on a regular basis
C	Never
D	Only when there is no other means of communications readily available

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	1200 baud
B	19.6 kilobaud
C	56 kilobaud
D	300 baud

4. - G1D03

On which of the following band segments may you operate if you are a Technician Class operator and have a CSCE for General Class privileges?

Select	Answer
A	On any General or Technician Class band segment except 30-meters and 60-meters
B	On any General or Technician Class band segment
C	Only the Technician band segments until your upgrade is posted in the FCC database
D	Only on the Technician band segments until your license arrives in the mail

5. - G1E13

On what bands may automatically controlled stations transmitting RTTY or data emissions communicate with other automatically controlled digital stations?

Select	Answer
A	Anywhere in the 1.25-meter or shorter wavelength bands, and in specified segments of the 80-meter through 2-meter bands
B	Anywhere in the non-phone segments of the 10-meter or shorter wavelength bands
C	On any band segment where digital operation is permitted
D	Only in the non-phone Extra Class segments of the bands

6. - G2A07

Which of the following statements is true of the single sideband voice mode?

Select	Answer
A	SSB is the only voice mode that is authorized on the 20-meter, 15-meter, and 10-meter amateur bands
B	Only one sideband and the carrier are transmitted; the other sideband is suppressed
C	SSB is the only voice mode that is authorized on the 160-meter, 75-meter and 40-meter amateur bands
D	Only one sideband is transmitted; the other sideband and carrier are suppressed

7. - G2B01

Which of the following is true concerning access to frequencies in non-emergency situations?

Select	Answer
A	QSOs in progress always have priority
B	Nets always have priority
C	Except during FCC declared emergencies, no one has priority access to frequencies
D	Contest operations must always yield to non-contest use of frequencies

8. - G2C03

What does it mean when a CW operator sends "KN" at the end of a transmission?

Select	Answer
A	Operating full break-in
B	Listening only for a specific station or stations
C	Closing station now
D	Listening for novice stations

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. - G2E04

What segment of the 20-meter band is most often used for digital transmissions?

Select	Answer
A	14.275 - 14.350 MHz
B	14.150 - 14.225 MHz
C	14.000 - 14.050 MHz
D	14.070 - 14.100 MHz

11. - G3A06

What is a geomagnetic storm?

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

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	HF communications over the path are enhanced
C	Propagation over the path on all HF frequencies is enhanced
D	Double hop propagation along the path is more common

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. - G4A09

Why is a time delay sometimes included in a transmitter keying circuit?

Select	Answer
A	To allow time for transmit-receive changeover operations to complete properly before RF output is allowed
B	To prevent stations from interfering with one another
C	To allow the transmitter power regulators to charge properly
D	To allow time for a warning signal to be sent to other stations

15. - G4B04

What signal source is connected to the vertical input of an oscilloscope when checking the RF envelope pattern of a transmitted signal?

Select	Answer
A	An external RF oscillator
B	The attenuated RF output of the transmitter
C	The local oscillator of the transmitter
D	The transmitter balanced mixer output

16. - G4C09

How can a ground loop be avoided?

Select	Answer
A	Avoid using lock washers and star washers when making ground connections
B	Connect all ground conductors in series
C	Connect the AC neutral conductor to the ground wire
D	Connect all ground conductors to a single point

17. - G4D01

What is the purpose of a speech processor as used in a modern transceiver?

Select	Answer
A	Decrease high-frequency voice output to prevent out of band operation
B	Increase the intelligibility of transmitted phone signals during poor conditions
C	Increase transmitter bass response for more natural sounding SSB signals
D	Prevent distortion of voice signals

18. - G4E11

Which of the following is a disadvantage of using wind as the primary source of power for an emergency station?

Select	Answer
A	The voltage and current ratings of such systems are not compatible with amateur equipment
B	All of these choices are correct
C	The conversion efficiency from mechanical energy to electrical energy is less than 2 percent
D	A large energy storage system is needed to supply power when the wind is not blowing

19. - G5A12

What is one reason to use an impedance matching transformer?

Select	Answer
A	To minimize radiation resistance
B	To reduce power supply ripple
C	To minimize transmitter power output
D	To maximize the transfer of power

20. - G5B05

How many watts are dissipated when a current of 7.0 milliamperes flows through 1.25 kilohms resistance?

Select	Answer
A	Approximately 11 watts
B	Approximately 61 milliwatts
C	Approximately 61 watts
D	Approximately 11 milliwatts

21. - G5C14

Which of the following components should be added to an inductor to increase the inductance?

Select	Answer
A	An inductor in parallel
B	An inductor in series
C	A capacitor in series
D	A resistor in parallel

22. - G6A12

What is the primary purpose of a screen grid in a vacuum tube?

Select	Answer
A	To decrease plate resistance
B	To reduce grid-to-plate capacitance
C	To increase the control grid resistance
D	To increase efficiency

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. - G7A09

Which symbol in figure G7-1 represents a field effect transistor?

Select	Answer
A	Symbol 1
B	Symbol 5
C	Symbol 4
D	Symbol 2

25. - G7B11

For which of the following modes is a Class C power stage appropriate for amplifying a modulated signal?

Select	Answer
A	CW
B	SSB
C	All of these choices are correct
D	AM

26. - G7C04

What circuit is used to combine signals from the IF amplifier and BFO and send the result to the AF amplifier in some single sideband receivers?

Select	Answer
A	RF oscillator
B	Balanced modulator
C	IF filter
D	Product detector

27. - G8A01

How is an FSK signal generated?

Select	Answer
A	By keying an FM transmitter with a sub-audible tone
B	By reconfiguring the CW keying input to act as a tone generator
C	By using a transceiver's computer data interface protocol to change frequencies
D	By changing an oscillator's frequency directly with a digital control signal

28. - G8B05

What is the approximate bandwidth of a PACTOR3 signal at maximum data rate?

Select	Answer
A	31.5 Hz
B	2300 Hz
C	500 Hz
D	1800 Hz

29. - G8C03

What part of a data packet contains the routing and handling information?

Select	Answer
A	Preamble
B	Directory
C	Footer
D	Header

30. - G9A01

Which of the following factors determine the characteristic impedance of a parallel conductor antenna feed line?

Select	Answer
A	The distance between the centers of the conductors and the length of the line
B	The radius of the conductors and the frequency of the signal
C	The frequency of the signal and the length of the line
D	The distance between the centers of the conductors and the radius of the conductors

31. - G9B11

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

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

32. - G9C01

Which of the following would increase the bandwidth of a Yagi antenna?

Select	Answer
A	Closer element spacing
B	Loading coils in series with the element
C	Larger diameter elements
D	Tapered-diameter elements

33. - G9D01

What does the term NVIS mean as related to antennas?

Select	Answer
A	Near Vertical Incidence sky-wave
B	Non-Varying Impedance Smoothing
C	Non-Varying Indicated SWR
D	Nearly Vertical Inductance System

34. - G0A09

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

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

35. - G0B15

Which of the following is true of an emergency generator installation?

Select	Answer
A	All of these choices are correct
B	The generator must be insulated from ground
C	The generator should be located in a well-ventilated area
D	Fuel should be stored near the generator for rapid refueling in case of an emergency

Figure G7-1