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. - G1A07

Which of the following frequencies is within the General Class portion of the 20-meter phone band?

Select	Answer
A	14005 kHz
B	14305 kHz
C	14405 kHz
D	14105 kHz

2. - G1B03

Which of the following is a purpose of a beacon station as identified in the FCC rules?

Select	Answer
A	Observation of propagation and reception
B	Transmission of bulletins of general interest to Amateur Radio licensees
C	Automatic identification of repeaters
D	Identifying net frequencies

3. - G1C02

What is the maximum transmitting power an amateur station may use on the 12-meter band?

Select	Answer
A	1500 watts PEP output
B	An effective radiated power equivalent to 100 watts from a half-wave dipole
C	50 watts PEP output
D	200 watts PEP output

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	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	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
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. - G1E12

Under what circumstances are messages that are sent via digital modes exempt from Part 97 third party rules that apply to other modes of communication?

Select	Answer
A	When messages are not encrypted
B	Under no circumstances
C	When messages are encrypted
D	When under automatic control

6. - G2A04

Which mode is most commonly used for voice communications on the 17-meter and 12-meter bands?

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

7. - G2B03

If propagation changes during your contact and you notice increasing interference from other activity on the same frequency, what should you do?

Select	Answer
A	As a common courtesy, move your contact to another frequency
B	Tell the interfering stations to change frequency
C	Report the interference to your local Amateur Auxiliary Coordinator
D	Increase power to overcome interference

8. - G2C02

What should you do if a CW station sends "QRS"?

Select	Answer
A	Repeat everything twice
B	Change frequency
C	Send slower
D	Increase your power

9. - G2D06

How is a directional antenna pointed when making a "long-path" contact with another station?

Select	Answer
A	180 degrees from its short-path heading
B	Toward the north
C	Toward the rising Sun
D	Along the gray line

10. - G2E10

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

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

11. - G3A16

What is a possible benefit to radio communications resulting from periods of high geomagnetic activity?

Select	Answer
A	Higher signal strength for HF signals passing through the polar regions
B	Improved HF long path propagation
C	Reduced long delayed echoes
D	Auroras that can reflect VHF signals

12. - G3B12

What factor or factors affect the MUF?

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

13. - G3C13

What is Near Vertical Incidence Sky-wave (NVIS) propagation?

Select	Answer
A	Double hop propagation near the LUF
B	Propagation near the MUF
C	Short distance MF or HF propagation using high elevation angles
D	Long path HF propagation at sunrise and sunset

14. - G4A07

What condition can lead to permanent damage to a solid-state RF power amplifier?

Select	Answer
A	Shorting the input signal to ground
B	Insufficient drive power
C	Excessive drive power
D	Low input SWR

15. - G4B09

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

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

16. - G4C10

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

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

17. - G4D04

What does an S meter measure?

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

18. - G4E02

What is the purpose of a corona ball on a HF mobile antenna?

Select	Answer
A	To increase the "Q" 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 reduce high voltage discharge from the tip 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 increases
B	As the frequency of the applied AC increases, the reactance decreases
C	As the amplitude of the applied AC increases, the reactance decreases
D	As the frequency of the applied AC increases, the reactance increases

20. - G5B02

How does the total current relate to the individual currents in each branch of a purely resistive parallel circuit?

Select	Answer
A	It decreases as more parallel branches are added to the circuit
B	It equals the sum of the currents through each branch
C	It is the sum of the reciprocal of each individual voltage drop
D	It equals the average of each branch current

21. - G5C04

What is the total resistance of three 100 ohm resistors in parallel?

Select	Answer
A	33.3 ohms
B	0.30 ohms
C	300 ohms
D	0.33 ohms

22. - G6A07

What are the stable operating points for a bipolar transistor used as a switch in a logic circuit?

Select	Answer
A	Its active region (between the cutoff and saturation regions)
B	Its enhancement and depletion modes
C	Its peak and valley current points
D	Its saturation and cutoff regions

23. - G6B02

What is meant by the term MMIC?

Select	Answer
A	Mode Modulated Integrated Circuit
B	Military Manufactured Integrated Circuit
C	Monolithic Microwave Integrated Circuit
D	Multi Megabyte Integrated Circuit

24. - G7A02

Which of the following components are used in a power supply filter network?

Select	Answer
A	Capacitors and inductors
B	Transformers and transducers
C	Quartz crystals
D	Diodes

25. - G7B05

How many states does a 3-bit binary counter have?

Select	Answer
A	6
B	16
C	3
D	8

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	Substantially lower
C	Twice the transmission line impedance
D	About the same

27. - G8A10

What is meant by the term flat-topping when referring to a single sideband phone transmission?

Select	Answer
A	The transmitter's carrier is properly suppressed
B	Signal distortion caused by insufficient collector current
C	The transmitter's automatic level control (ALC) is properly adjusted
D	Signal distortion caused by excessive drive

28. - G8B02

If a receiver mixes a 13.800 MHz VFO with a 14.255 MHz received signal to produce a 455 kHz intermediate frequency (IF) signal, what type of interference will a 13.345 MHz signal produce in the receiver?

Select	Answer
A	Quadrature noise
B	Intermediate interference
C	Mixer interference
D	Image response

29. - G8C02

How many data bits are sent in a single PSK31 character?

Select	Answer
A	8
B	7
C	The number varies
D	5

30. - G9A06

In what units is RF feed line loss usually expressed?

Select	Answer
A	Ohms per 1000 feet
B	Decibels per 100 feet
C	Decibels per 1000 feet
D	Ohms per 100 feet

31. - G9B03

What happens to the feed point impedance of a ground plane antenna when its radials are changed from horizontal to sloping downward?

Select	Answer
A	It increases
B	It reaches a maximum at an angle of 45 degrees
C	It decreases
D	It stays the same

32. - G9C08

What is meant by the "main lobe" of a directive antenna?

Select	Answer
A	The maximum voltage standing wave point on a radiating element
B	The direction of maximum radiated field strength from the antenna
C	The point of maximum current in a radiating antenna element
D	The magnitude of the maximum vertical angle of radiation

33. - G9D11

Which of the following is a disadvantage of multiband antennas?

Select	Answer
A	They present low impedance on all design frequencies
B	They must be fed with open wire line
C	They must be used with an antenna tuner
D	They have poor harmonic rejection

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 be installed such that it is protected against unauthorized access
C	It should limited to 10 feet in height
D	It should not be installed higher than you can reach

35. - G0B02

What is the minimum wire size that may be safely used for a circuit that draws up to 20 amperes of continuous current?

Select	Answer
A	AWG number 12
B	AWG number 8
C	AWG number 20
D	AWG number 16