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. - G1A03

On which of the following bands is image transmission prohibited?

Select	Answer
A	30 meters
B	160 meters
C	20 meters
D	12 meters

2. - G1B10

What is the power limit for beacon stations?

Select	Answer
A	100 watts PEP output
B	20 watts PEP output
C	200 watts PEP output
D	10 watts PEP output

3. - G1C10

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

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

4. - G1D11

If a person has an expired FCC issued amateur radio license of General Class or higher, what is required before they can receive a new license?

Select	Answer
A	The applicant must pass the current element 2 exam
B	There are no requirements other than being able to show a copy of the expired license
C	The applicant must be able to produce a copy of a page from a call book published in the USA showing his or her name and address
D	They must have a letter from the FCC showing they once held an amateur or commercial license

5. - G1E11

Which of the following is the FCC term for an unattended digital station that transfers messages to and from the Internet?

Select	Answer
A	Locally controlled station
B	Automatically controlled digital station
C	Fail-safe digital station
D	Robotically controlled station

6. - G2A02

Which of the following modes is most commonly used for voice communications on the 160-meter, 75-meter, and 40-meter bands?

Select	Answer
A	Upper sideband
B	Vestigial sideband
C	Lower sideband
D	Double sideband

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	Contest operations must always yield to non-contest use of frequencies
C	Nets always have priority
D	Except during FCC declared emergencies, no one has priority access to frequencies

8. - G2C10

What does the Q signal "QRN" mean?

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

9. - G2D10

What is QRP operation?

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

10. - G2E13

Which communication system sometimes uses the Internet to transfer messages?

Select	Answer
A	ARES
B	RTTY
C	Winlink
D	Skywarn

11. - G3A04

Which of the following are least reliable for long distance communications during periods of low solar activity?

Select	Answer
A	15 meters, 12 meters and 10 meters
B	60 meters and 40 meters
C	80 meters and 160 meters
D	30 meters and 20 meters

12. - G3B12

What factor or factors affect the MUF?

Select	Answer
A	Path distance and location
B	All of these choices are correct
C	Time of day and season
D	Solar radiation and ionospheric disturbances

13. - G3C01

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

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

14. - G4A13

What is one reason to use the attenuator function that is present on many HF transceivers?

Select	Answer
A	To slow down received CW signals for better copy
B	To reduce the transmitter power when driving a linear amplifier
C	To reduce signal overload due to strong incoming signals
D	To reduce power consumption when operating from batteries

15. - G4B10

Which of the following can be determined with a directional wattmeter?

Select	Answer
A	Antenna front-to-back ratio
B	Standing wave ratio
C	Radio wave propagation
D	RF interference

16. - G4C01

Which of the following might be useful in reducing RF interference to audio frequency devices?

Select	Answer
A	Bypass inductor
B	Reverse-biased diode
C	Bypass capacitor
D	Forward-biased diode

17. - G4D10

How close to the lower edge of the 40-meter General Class phone segment should your displayed carrier frequency be when using 3 kHz wide LSB?

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

18. - G4E04

Why is it best NOT to draw the DC power for a 100 watt HF transceiver from a vehicle's auxiliary power socket?

Select	Answer
A	The socket's wiring may be inadequate for the current drawn by the transceiver
B	Drawing more than 50 watts from this socket could cause the engine to overheat
C	The DC polarity of the socket is reversed from the polarity of modern HF transceivers
D	The socket is not wired with an RF-shielded power cable

19. - G5A05

How does an inductor 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 increases
C	As the amplitude of the applied AC increases, the reactance increases
D	As the frequency of the applied AC increases, the reactance decreases

20. - G5B13

What is the output PEP of an unmodulated carrier if an average reading wattmeter connected to the transmitter output indicates 1060 watts?

Select	Answer
A	1500 watts
B	530 watts
C	1060 watts
D	2120 watts

21. - G5C03

Which of the following components should be added to an existing resistor to increase the resistance?

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

22. - G6A16

What will happen to the resistance if the temperature of a resistor is increased?

Select	Answer
A	It will change depending on the resistor's temperature coefficient
B	It will stay the same
C	It will become time dependent
D	It will change depending on the resistor's reactance coefficient

23. - G6B08

How is an LED biased when emitting light?

Select	Answer
A	At the Zener voltage
B	Reverse Biased
C	Beyond cutoff
D	Forward Biased

24. - G7A10

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

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

25. - G7B04

Which of the following describes the function of a two input NOR gate?

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

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 in which most major signal processing functions are performed by software
C	A computer model that can simulate performance of a radio to aid in the design process
D	A radio that uses crystal filters designed using software

27. - G8A09

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

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

28. - G8B10

What is the relationship between transmitted symbol rate and bandwidth?

Select	Answer
A	Higher symbol rates require wider bandwidth
B	Bandwidth is always half the symbol rate
C	Lower symbol rates require wider bandwidth
D	Symbol rate and bandwidth are not related

29. - G8C07

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

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

30. - G9A03

What is the characteristic impedance of flat ribbon TV type twinlead?

Select	Answer
A	100 ohms
B	75 ohms
C	50 ohms
D	300 ohms

31. - G9B08

How does the feed point impedance of a 1/2 wave dipole change as the feed point is moved from the center toward the ends?

Select	Answer
A	It steadily increases
B	It peaks at about 1/8 wavelength from the end
C	It is unaffected by the location of the feed point
D	It steadily decreases

32. - G9C12

Which of the following is an advantage of using a gamma match for impedance matching of a Yagi antenna to 50 ohm coax feed line?

Select	Answer
A	All of these choices are correct
B	It is useful for matching multiband antennas
C	It does not require that the elements be insulated from the boom
D	It does not require any inductors or capacitors

33. - G9D10

Which of the following describes a Beverage antenna?

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

34. - G0A06

What precaution should be taken when installing a ground-mounted antenna?

Select	Answer
A	It should not be installed in a wet area
B	It should limited to 10 feet in height
C	It should be installed such that it is protected against unauthorized access
D	It should not be installed higher than you can reach

35. - G0B12

What is the purpose of a power supply interlock?

Select	Answer
A	To shut off the power supply if too much voltage is produced
B	To prevent unauthorized changes to the circuit that would void the manufacturer's warranty
C	To ensure that dangerous voltages are removed if the cabinet is opened
D	To shut down the unit if it becomes too hot

Figure G7-1