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. - G1A14

In what ITU region is operation in the 7.175 to 7.300 MHz band permitted for a control operator holding an FCC issued General Class license?

Select	Answer
A	Region 1
B	All three regions
C	Region 3
D	Region 2

2. - G1B10

What is the power limit for beacon stations?

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

3. - G1C05

Which of the following is a limitation on transmitter power on the 28 MHz band for a General Class control operator?

Select	Answer
A	100 watts PEP output
B	1500 watts PEP output
C	2000 watts PEP output
D	1000 watts PEP output

4. - G1D10

What is the minimum age that one must be to qualify as an accredited Volunteer Examiner?

Select	Answer
A	12 years
B	18 years
C	21 years
D	There is no age limit

5. - G1E07

With which foreign countries is third party traffic prohibited, except for messages directly involving emergencies or disaster relief communications?

Select	Answer
A	Countries in ITU Region 2
B	Countries in ITU Region 1
C	Any country which is not a member of the International Amateur Radio Union (IARU)
D	Every foreign country, unless there is a third party agreement in effect with that country

6. - G2A07

Which of the following statements is true of the single sideband voice mode?

Select	Answer
A	Only one sideband and the carrier are transmitted; the other sideband is suppressed
B	Only one sideband is transmitted; the other sideband and carrier are suppressed
C	SSB is the only voice mode that is authorized on the 20-meter, 15-meter, and 10-meter amateur bands
D	SSB is the only voice mode that is authorized on the 160-meter, 75-meter and 40-meter amateur bands

7. - G2B10

When may the FCC restrict normal frequency operations of amateur stations participating in RACES?

Select	Answer
A	When they seize your equipment for use in disaster communications
B	Only when all amateur stations are instructed to stop transmitting
C	When the President's War Emergency Powers have been invoked
D	When they declare a temporary state of communication emergency

8. - G2C11

What does the Q signal "QRV" mean?

Select	Answer
A	I am quitting for the day
B	I am ready to receive messages
C	You are sending too fast
D	There is interference on the frequency

9. - G2D10

What is QRP operation?

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

10. - G2E11

What is indicated on a waterfall display by one or more vertical lines adjacent to a PSK31 signal?

Select	Answer
A	Long Path propagation
B	Overmodulation
C	Backscatter propagation
D	Insufficient modulation

11. - G3A01

What is the significance of the sunspot number with regard to HF propagation?

Select	Answer
A	All of these choices are correct.
B	Higher sunspot numbers generally indicate a greater probability of good propagation at higher frequencies
C	A zero sunspot number indicate radio propagation is not possible on any band
D	Lower sunspot numbers generally indicate greater probability of sporadic E propagation

12. - G3B07

What does LUF stand for?

Select	Answer
A	The Longest Universal Function for communications between two points
B	The Lowest Usable Frequency during a 24 hour period
C	The Lowest Usable Frequency for communications between two points
D	The Longest Universal Function during a 24 hour period

13. - G3C06

What is a characteristic of HF scatter signals?

Select	Answer
A	All of these choices are correct
B	They have a wavering sound
C	They have high intelligibility
D	They have very large swings in signal strength

14. - G4A04

What reading on the plate current meter of a vacuum tube RF power amplifier indicates correct adjustment of the plate tuning control?

Select	Answer
A	A slow, rhythmic oscillation
B	No change will be observed
C	A pronounced peak
D	A pronounced dip

15. - G4B07

What signals are used to conduct a two-tone test?

Select	Answer
A	Two non-harmonically related audio signals
B	Two audio signals of the same frequency shifted 90 degrees
C	Two audio frequency range square wave signals of equal amplitude
D	Two swept frequency tones

16. - G4C07

What is one good way to avoid unwanted effects of stray RF energy in an amateur station?

Select	Answer
A	Use a ground loop for best conductivity
B	Install a few ferrite beads on the ground wire where it connects to your station
C	Connect all equipment grounds together
D	Install an RF filter in series with the ground wire

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

18. - G4E09

What is the approximate open-circuit voltage from a fully illuminated silicon photovoltaic cell?

Select	Answer
A	0.5 VDC
B	0.2 VDC
C	0.02 VDC
D	1.38 VDC

19. - G5A11

Which of the following describes one method of impedance matching between two AC circuits?

Select	Answer
A	Reduce the power output of the first circuit
B	Insert an LC network between the two circuits
C	Insert a circulator between the two circuits
D	Increase the power output of the first circuit

20. - G5B12

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

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

21. - G5C18

What is the value in microfarads of a 4700 nanofarad (nF) capacitor?

Select	Answer
A	4.7 microfarads
B	0.47 microfarads
C	47,000 microfarads
D	47 microfarads

22. - G6A08

Why must the cases of some large power transistors be insulated from ground?

Select	Answer
A	To improve the power dissipation capability
B	To avoid shorting the collector or drain voltage to ground
C	To increase the beta of the transistor
D	To reduce stray capacitance

23. - G6B14

Which of these connector types is commonly used for audio signals in Amateur Radio stations?

Select	Answer
A	RCA Phono
B	Type N
C	BNC
D	PL-259

24. - G7A02

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

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

25. - G7B10

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

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

26. - G7C09

Which of the following is needed for a Digital Signal Processor IF filter?

Select	Answer
A	An analog to digital converter
B	All of the these choices are correct
C	A digital processor chip
D	A digital to analog converter

27. - G8A05

What type of modulation varies the instantaneous power level of the RF signal?

Select	Answer
A	Frequency modulation
B	Amplitude modulation
C	Phase modulation
D	Frequency shift keying

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	VFO
B	BFO
C	Mixer
D	Discriminator

29. - G8C02

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

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

30. - G9A09

What standing wave ratio will result when connecting a 50 ohm feed line to a non-reactive load having 200 ohm impedance?

Select	Answer
A	2:1
B	4:1
C	1:2
D	1:4

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

32. - G9C17

Approximately how long is each leg of a symmetrical delta-loop antenna?

Select	Answer
A	2/3 wavelength
B	1/2 wavelength
C	1/4 wavelength
D	1/3 wavelength

33. - G9D11

Which of the following is a disadvantage of multiband antennas?

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

34. - G0A11

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

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

35. - G0B05

Which of the following conditions will cause a Ground Fault Circuit Interrupter (GFCI) to disconnect the 120 or 240 Volt AC line power to a device?

Select	Answer
A	Overvoltage on the voltage-carrying wires
B	Current flowing from one or more of the voltage-carrying wires directly to ground
C	All of these choices are correct
D	Current flowing from one or more of the voltage-carrying wires to the neutral wire