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. - G1A05

Which of the following frequencies is in the General Class portion of the 40-meter band?

Select	Answer
A	7.500 MHz
B	7.250 MHz
C	40.500 MHz
D	40.200 MHz

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 apparatus normally used in an amateur station and such activity is not done on a regular basis
B	Only when there is no other means of communications readily available
C	Never
D	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

3. - G1C07

What is the maximum symbol rate permitted for RTTY or data emission transmission on the 20-meter band?

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

4. - G1D01

Who may receive credit for the elements represented by an expired amateur radio license?

Select	Answer
A	Only persons who once held an FCC issued Novice, Technician, or Technician Plus license
B	Any person who can demonstrate that they once held an FCC issued General, Advanced, or Amateur Extra class license that was not revoked by the FCC
C	Anyone who held an FCC issued amateur radio license that has been expired for not less than 5 years and not more than 15 years
D	Any person who previously held an amateur license issued by another country, but only if that country has a current reciprocal licensing agreement with the FCC

5. - G1E02

When may a 10-meter repeater retransmit the 2-meter signal from a station having a Technician Class control operator?

Select	Answer
A	Only if the 10-meter repeater control operator holds at least a General Class license
B	Only if the station on 10-meters is operating under a Special Temporary Authorization allowing such retransmission
C	Only during an FCC declared general state of communications emergency
D	Under no circumstances

6. - G2A05

Which mode of voice communication is most commonly used on the HF amateur bands?

Select	Answer
A	Double sideband
B	Frequency modulation
C	Single sideband
D	Phase modulation

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	Identify your station by transmitting your call sign at least 3 times
C	Follow the voluntary band plan for the operating mode you intend to use
D	All of these choices are correct

8. - G2C03

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

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

9. - G2D10

What is QRP operation?

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

10. - G2E08

In what segment of the 20-meter band are most PSK31 operations commonly found?

Select	Answer
A	At the bottom of the slow-scan TV segment, near 14.230 MHz
B	In the middle of the CW segment, near 14.100 MHz
C	Below the RTTY segment, near 14.070 MHz
D	At the top of the SSB phone segment, near 14.325 MHz

11. - G3A10

What causes HF propagation conditions to vary periodically in a 28 day cycle?

Select	Answer
A	The position of the Moon in its orbit
B	The Sun's rotation on its axis
C	Cyclic variation in the Earth's radiation belts
D	Long term oscillations in the upper atmosphere

12. - G3B08

What does MUF stand for?

Select	Answer
A	The Minimum Usable Frequency during a 24 hour period
B	The Maximum Usable Frequency for communications between two points
C	The Minimum Usable Frequency for communications between two points
D	The Maximum Usable Frequency during a 24 hour period

13. - G3C01

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

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

14. - G4A02

What is one advantage of selecting the opposite or "reverse" sideband when receiving CW signals on a typical HF transceiver?

Select	Answer
A	More stations can be accommodated within a given signal passband
B	Interference from impulse noise will be eliminated
C	Accidental out of band operation can be prevented
D	It may be possible to reduce or eliminate interference from other signals

15. - G4B09

Which of the following can be determined with a field strength meter?

Select	Answer
A	The radiation pattern of an antenna
B	The presence and amount of amplitude distortion of a transmitter
C	The radiation resistance of an antenna
D	The presence and amount of phase distortion of a transmitter

16. - G4C09

How can a ground loop be avoided?

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

17. - G4D04

What does an S meter measure?

Select	Answer
A	Transmitter power output
B	Conductance
C	Impedance
D	Received signal strength

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 narrow the operating bandwidth of the antenna
C	To reduce the chance of damage if the antenna should strike an object
D	To increase the "Q" of the antenna

19. - G5A06

How does a capacitor react to AC?

Select	Answer
A	As the amplitude of the applied AC increases, the reactance decreases
B	As the frequency of the applied AC increases, the reactance decreases
C	As the frequency of the applied AC increases, the reactance increases
D	As the amplitude of the applied AC increases, the reactance increases

20. - G5B12

What would be the RMS voltage across a 50 ohm dummy load dissipating 1200 watts?

Select	Answer
A	245 volts
B	346 volts
C	173 volts
D	692 volts

21. - G5C16

Why is the conductor of the primary winding of many voltage step up transformers larger in diameter than the conductor of the secondary winding?

Select	Answer
A	To prevent parasitic oscillations due to resistive losses in the primary
B	To insure that the volume of the primary winding is equal to the volume of the secondary winding
C	To accommodate the higher current of the primary
D	To improve the coupling between the primary and secondary

22. - G6A04

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

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

23. - G6B16

Which of the following describes a type N connector?

Select	Answer
A	A moisture-resistant RF connector useful to 10 GHz
B	A threaded connector used for hydraulic systems
C	An audio connector used in surround-sound installations
D	A small bayonet connector used for data circuits

24. - G7A10

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

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

25. - G7B10

Which of the following is a characteristic of a Class A amplifier?

Select	Answer
A	No need for bias
B	Low standby power
C	High Efficiency
D	Low distortion

26. - G7C05

Which of the following is an advantage of a transceiver controlled by a direct digital synthesizer (DDS)?

Select	Answer
A	Variable frequency with the stability of a crystal oscillator
B	Relatively low power consumption
C	Wide tuning range and no need for band switching
D	Relatively high power output

27. - G8A01

How is an FSK signal generated?

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

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	BFO
B	Discriminator
C	Mixer
D	VFO

29. - G8C03

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

Select	Answer
A	Header
B	Directory
C	Preamble
D	Footer

30. - G9A15

What is the effect of transmission line loss on SWR measured at the input to the line?

Select	Answer
A	Transmission line loss does not affect the SWR measurement
B	The higher the transmission line loss, the more the SWR will read artificially high
C	The higher the transmission line loss, the more accurate the SWR measurement will be
D	The higher the transmission line loss, the more the SWR will read artificially low

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. - G9C01

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

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

33. - G9D01

What does the term NVIS mean as related to antennas?

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

34. - G0A07

What effect does transmitter duty cycle have when evaluating RF exposure?

Select	Answer
A	A lower transmitter duty cycle permits greater short-term exposure levels
B	Low duty cycle transmitters are exempt from RF exposure evaluation requirements
C	High duty cycle transmitters are exempt from RF exposure requirements
D	A higher transmitter duty cycle permits greater short-term exposure levels

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 should be located in a well-ventilated area
C	The generator must be insulated from ground
D	Fuel should be stored near the generator for rapid refueling in case of an emergency

Figure G7-1