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, 60, 30, 17, 12, and 10 meters
B	160, 30, 17, 15, 12, and 10 meters
C	160, 80, 40, 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	Never
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	Only when there is no other means of communications readily available
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. - 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	300 baud
C	19.6 kilobaud
D	56 kilobaud

4. - G1D01

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

Select	Answer
A	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
B	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
C	Only persons who once held an FCC issued Novice, Technician, or Technician Plus license
D	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

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 relating to Amateur Radio or remarks of a personal character, or messages relating to emergencies or disaster relief
D	Only messages for other licensed amateurs

6. - G2A05

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

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

7. - G2B08

What is the "DX window" in a voluntary band plan?

Select	Answer
A	An FCC rule that allows only digital contacts in that portion of the band
B	A portion of the band that has been voluntarily set aside for digital contacts only
C	A portion of the band that should not be used for contacts between stations within the 48 contiguous United States
D	An FCC rule that prohibits contacts between stations within the United States and possessions in that portion of the band

8. - G2C04

What does the Q signal "QRL?" mean?

Select	Answer
A	"Are you busy?", or "Is this frequency in use?"
B	"Are you operating full break-in" or "Can you operate full break-in?"
C	"Are you listening only for a specific station?"
D	"Will you keep the frequency clear?"

9. - G2D10

What is QRP operation?

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

10. - G2E10

Which of the following is a way to establish contact with a digital messaging system gateway station?

Select	Answer
A	Respond when the station broadcasts its SSID
B	Transmit a connect message on the station's published frequency
C	Send an email to the system control operator
D	Send QRL in Morse code

11. - G3A13

What does the A-index indicate?

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

12. - G3B06

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

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

13. - G3C04

What does the term "critical angle" mean as used in radio wave propagation?

Select	Answer
A	The highest takeoff angle that will return a radio wave to the Earth under specific ionospheric conditions
B	The lowest takeoff angle that will return a radio wave to the Earth under specific ionospheric conditions
C	The short path azimuth of a distant station
D	The long path azimuth of a distant station

14. - G4A08

What is the correct adjustment for the load or coupling control of a vacuum tube RF power amplifier?

Select	Answer
A	Maximum power output without exceeding maximum allowable plate current
B	Highest plate voltage while minimizing grid current
C	Minimum plate current without exceeding maximum allowable grid current
D	Minimum SWR on the antenna

15. - G4B01

What item of test equipment contains horizontal and vertical channel amplifiers?

Select	Answer
A	An ohmmeter
B	A signal generator
C	An ammeter
D	An oscilloscope

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

17. - G4D09

What frequency range is occupied by a 3 kHz USB signal with the displayed carrier frequency set to 14.347 MHz?

Select	Answer
A	14.344 to 14.347 MHz
B	14.3455 to 14.3485 MHz
C	14.347 to 14.350 MHz
D	14.347 to 14.647 MHz

18. - G4E05

Which of the following most limits the effectiveness of an HF mobile transceiver operating in the 75-meter band?

Select	Answer
A	FCC rules limiting mobile output power on the 75-meter band
B	The antenna system
C	"Picket Fencing" signal variation
D	The wire gauge of the DC power line to the transceiver

19. - G5A05

How does an inductor react to AC?

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

20. - G5B09

What is the RMS voltage of a sine wave with a value of 17 volts peak?

Select	Answer
A	12 volts
B	34 volts
C	24 volts
D	8.5 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 accommodate the higher current of the primary
C	To improve the coupling between the primary and secondary
D	To insure that the volume of the primary winding is equal to the volume of the secondary winding

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

23. - G6B04

What is meant by the term ROM?

Select	Answer
A	Read Only Memory
B	Random Operational Memory
C	Resistant to Overload Memory
D	Resistor Operated Memory

24. - G7A12

Which symbol in Figure G7-1 represents a multiple-winding transformer?

Select	Answer
A	Symbol 7
B	Symbol 4
C	Symbol 6
D	Symbol 1

25. - G7B12

Which of these classes of amplifiers has the highest efficiency?

Select	Answer
A	Class A
B	Class B
C	Class AB
D	Class C

26. - G7C06

What should be the impedance of a low-pass filter as compared to the impedance of the transmission line into which it is inserted?

Select	Answer
A	Substantially higher
B	Twice the transmission line impedance
C	Substantially lower
D	About the same

27. - G8A01

How is an FSK signal generated?

Select	Answer
A	By reconfiguring the CW keying input to act as a tone generator
B	By keying an FM transmitter with a sub-audible tone
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. - G8B09

Why is it good to match receiver bandwidth to the bandwidth of the operating mode?

Select	Answer
A	It is required by FCC rules
B	It results in the best signal to noise ratio
C	It improves impedance matching of the antenna
D	It minimizes power consumption in the receiver

29. - G8C11

How are the two separate frequencies of a Frequency Shift Keyed (FSK) signal identified?

Select	Answer
A	On and Off
B	Dot and Dash
C	Mark and Space
D	High and Low

30. - G9A07

What must be done to prevent standing waves on an antenna feed line?

Select	Answer
A	The antenna feed point impedance must be matched to the characteristic impedance of the feed line
B	The feed line must be cut to a length equal to an odd number of electrical quarter wavelengths
C	The feed line must be cut to a length equal to an even number of physical half wavelengths
D	The antenna feed point must be at DC ground potential

31. - G9B09

Which of the following is an advantage of a horizontally polarized as compared to a vertically polarized HF antenna?

Select	Answer
A	Lower feed point impedance
B	Lower ground reflection losses
C	Shorter Radials
D	Lower radiation resistance

32. - G9C05

How does increasing boom length and adding directors affect a Yagi antenna?

Select	Answer
A	Beamwidth increases
B	Front to back ratio decreases
C	Front to side ratio decreases
D	Gain increases

33. - G9D09

Which of the following is an application for a Beverage antenna?

Select	Answer
A	Directional transmitting for low HF bands
B	Portable direction finding at higher HF frequencies
C	Directional receiving for low HF bands
D	Portable direction finding at lower HF frequencies

34. - G0A06

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

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

35. - G0B04

Which of the following is a primary reason for not placing a gasoline-fueled generator inside an occupied area?

Select	Answer
A	Danger of carbon monoxide poisoning
B	Lack of nitrogen for adequate combustion
C	Danger of engine over torque
D	Lack of oxygen for adequate combustion

Figure G7-1