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. - G1A13

What is the appropriate action if, when operating on either the 30-meter or 60-meter bands, a station in the primary service interferes with your contact?

Select	Answer
A	Move to a clear frequency or stop transmitting
B	Notify the FCCs regional Engineer in Charge of the interference
C	Attempt to contact the station and request that it stop the interference
D	Increase your transmitter's power to overcome the interference

2. - G1B05

When may music be transmitted by an amateur station?

Select	Answer
A	When it is transmitted on frequencies above 1215 MHz
B	When it is an incidental part of a manned space craft retransmission
C	When it is unintentionally transmitted from the background at the transmitter
D	At any time, as long as it produces no spurious emissions

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	300 baud
B	56 kilobaud
C	19.6 kilobaud
D	1200 baud

4. - G1D07

Volunteer Examiners are accredited by what organization?

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

5. - G1E01

Which of the following would disqualify a third party from participating in stating a message over an amateur station?

Select	Answer
A	The third party is a licensed amateur
B	The third party is not a U.S. citizen
C	The third party is speaking in a language other than English
D	The third party's amateur license has been revoked and not reinstated

6. - G2A10

Which of the following statements is true of voice VOX operation versus PTT operation?

Select	Answer
A	It provides more power output
B	The received signal is more natural sounding
C	It allows "hands free" operation
D	It occupies less bandwidth

7. - G2B12

When is an amateur station allowed to use any means at its disposal to assist another station in distress?

Select	Answer
A	At any time when transmitting in an organized net
B	At any time during an actual emergency
C	Only on authorized HF frequencies
D	Only when transmitting in RACES

8. - G2C01

Which of the following describes full break-in telegraphy (QSK)?

Select	Answer
A	An operator must activate a manual send/receive switch before and after every transmission
B	Transmitting stations can receive between code characters and elements
C	Automatic keyers are used to send Morse code instead of hand keys
D	Breaking stations send the Morse code prosign BK

9. - G2D07

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

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

10. - G2E12

Which of the following describes a waterfall display?

Select	Answer
A	Frequency is horizontal, signal strength is vertical, time is intensity
B	Frequency is vertical, signal strength is horizontal, time is intensity
C	Frequency is vertical, signal strength is intensity, time is horizontal
D	Frequency is horizontal, signal strength is intensity, time is vertical

11. - G3A12

What does the K-index indicate?

Select	Answer
A	The short term stability of the Earth's magnetic field
B	The solar radio flux at Boulder, Colorado
C	The relative position of sunspots on the surface of the Sun
D	The stability of the Sun's magnetic field

12. - G3B06

What usually happens to radio waves with frequencies below the LUF?

Select	Answer
A	They are bent back to the Earth
B	They pass through the ionosphere
C	They are bent and trapped in the ionosphere to circle the Earth
D	They are completely absorbed by the ionosphere

13. - G3C03

Why is the F2 region mainly responsible for the longest distance radio wave propagation?

Select	Answer
A	Because it is the highest ionospheric region
B	Because it does not absorb radio waves as much as other ionospheric regions
C	Because it is the densest ionospheric layer
D	All of these choices are correct

14. - G4A09

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

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

15. - G4B09

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

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

16. - G4C10

What could be a symptom of a ground loop somewhere in your station?

Select	Answer
A	An item of station equipment starts to draw excessive amounts of current
B	You receive reports of harmonic interference from your station
C	You receive reports of "hum" on your station's transmitted signal
D	The SWR reading for one or more antennas is suddenly very high

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 the chance of damage if the antenna should strike an object
B	To narrow the operating bandwidth of the antenna
C	To reduce high voltage discharge from the tip of the antenna
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 amplitude of the applied AC increases, the reactance increases
C	As the frequency of the applied AC increases, the reactance decreases
D	As the frequency 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	692 volts
B	346 volts
C	173 volts
D	245 volts

21. - G5C13

Which of the following components should be added to a capacitor to increase the capacitance?

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

22. - G6A12

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

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

23. - G6B16

Which of the following describes a type N connector?

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

24. - G7A06

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

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

25. - G7B04

Which of the following describes the function of a two input NOR 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 only when both inputs are high
D	Output is low when either or both inputs are high

26. - G7C11

What is meant by the term "software defined radio" (SDR)?

Select	Answer
A	A radio that provides computer interface for automatic logging of band and frequency
B	A radio that uses crystal filters designed using software
C	A radio in which most major signal processing functions are performed by software
D	A computer model that can simulate performance of a radio to aid in the design process

27. - G8A09

What control is typically adjusted for proper ALC setting on an amateur single sideband transceiver?

Select	Answer
A	The RF clipping level
B	Attenuator level
C	Antenna inductance or capacitance
D	Transmit audio or microphone gain

28. - G8B06

What is the total bandwidth of an FM phone transmission having 5 kHz deviation and 3 kHz modulating frequency?

Select	Answer
A	16 kHz
B	8 kHz
C	3 kHz
D	5 kHz

29. - G8C03

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

Select	Answer
A	Footer
B	Header
C	Directory
D	Preamble

30. - G9A10

What standing wave ratio will result when connecting a 50 ohm feed line to a non-reactive load having 10 ohm impedance?

Select	Answer
A	5:1
B	50:1
C	2:1
D	1:5

31. - G9B06

Where should the radial wires of a ground-mounted vertical antenna system be placed?

Select	Answer
A	As high as possible above the ground
B	Parallel to the antenna element
C	On the surface of the Earth or buried a few inches below the ground
D	At the center of the antenna

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	Loading coils in series with the element
D	Tapered-diameter elements

33. - G9D10

Which of the following describes a Beverage antenna?

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

34. - G0A11

What precaution should you take if you install an indoor transmitting antenna?

Select	Answer
A	Locate the antenna close to your operating position to minimize feed line radiation
B	Make sure the antenna is properly shielded
C	Make sure that MPE limits are not exceeded in occupied areas
D	Position the antenna along the edge of a wall to reduce parasitic radiation

35. - G0B07

Which of these choices should be observed when climbing a tower using a safety belt or harness?

Select	Answer
A	Ensure that all heavy tools are securely fastened to the belt D-ring
B	All of these choices are correct
C	Confirm that the belt is rated for the weight of the climber and that it is within its allowable service life
D	Never lean back and rely on the belt alone to support your weight