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	All three regions
B	Region 1
C	Region 3
D	Region 2

2. - G1B03

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

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

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	2000 watts PEP output
C	1000 watts PEP output
D	1500 watts PEP output

4. - G1D03

On which of the following band segments may you operate if you are a Technician Class operator and have a CSCE for General Class privileges?

Select	Answer
A	On any General or Technician Class band segment except 30-meters and 60-meters
B	Only on the Technician band segments until your license arrives in the mail
C	On any General or Technician Class band segment
D	Only the Technician band segments until your upgrade is posted in the FCC database

5. - G1E04

Which of the following conditions require a licensed Amateur Radio operator to take specific steps to avoid harmful interference to other users or facilities?

Select	Answer
A	When a station is transmitting spread spectrum emissions
B	When using a band where the Amateur Service is secondary
C	All of these choices are correct
D	When operating within one mile of an FCC Monitoring Station

6. - G2A09

Why do most amateur stations use lower sideband on the 160-meter, 75-meter and 40-meter bands?

Select	Answer
A	Lower sideband is more efficient than upper sideband at these frequencies
B	Lower sideband is the only sideband legal on these frequency bands
C	Because it is fully compatible with an AM detector
D	Current amateur practice is to use lower sideband on these frequency bands

7. - G2B09

Who may be the control operator of an amateur station transmitting in RACES to assist relief operations during a disaster?

Select	Answer
A	A person holding an FCC issued amateur operator license or an appropriate government official
B	Any control operator when normal communication systems are operational
C	Only a RACES net control operator
D	Only a person holding an FCC issued amateur operator license

8. - G2C06

What does the term "zero beat" mean in CW operation?

Select	Answer
A	Matching your transmit frequency to the frequency of a received signal
B	Operating split to avoid interference on frequency
C	Matching the speed of the transmitting station
D	Sending without error

9. - G2D06

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

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

10. - G2E04

What segment of the 20-meter band is most often used for digital transmissions?

Select	Answer
A	14.150 - 14.225 MHz
B	14.000 - 14.050 MHz
C	14.070 - 14.100 MHz
D	14.275 - 14.350 MHz

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 long term stability of the Earth's geomagnetic field
D	The relative position of sunspots on the surface of the Sun

12. - G3B03

Which of the following applies when selecting a frequency for lowest attenuation when transmitting on HF?

Select	Answer
A	Select a frequency just above the critical frequency
B	Select a frequency just above the LUF
C	Select a frequency just below the critical frequency
D	Select a frequency just below the MUF

13. - G3C13

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

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

14. - G4A08

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

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

15. - G4B14

What is an instance in which the use of an instrument with analog readout may be preferred over an instrument with a digital readout?

Select	Answer
A	When high precision is desired
B	When measuring the frequency of an oscillator
C	When adjusting tuned circuits
D	When testing logic circuits

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	A chirpy CW signal
B	A CW signal at a nearly pure audio frequency
C	Severely distorted audio
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	14.347 to 14.350 MHz
B	14.3455 to 14.3485 MHz
C	14.344 to 14.347 MHz
D	14.347 to 14.647 MHz

18. - G4E09

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

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

19. - G5A07

What happens when the impedance of an electrical load is equal to the output impedance of a power source, assuming both impedances are resistive?

Select	Answer
A	No current can flow through the circuit
B	The source delivers minimum power to the load
C	The source can deliver maximum power to the load
D	The electrical load is shorted

20. - G5B04

How many watts of electrical power are used by a 12 VDC light bulb that draws 0.2 amperes?

Select	Answer
A	2.4 watts
B	6 watts
C	60 watts
D	24 watts

21. - G5C15

What is the total resistance of a 10 ohm, a 20 ohm, and a 50 ohm resistor connected in parallel?

Select	Answer
A	5.9 ohms
B	10000 ohms
C	0.17 ohms
D	80 ohms

22. - G6A03

What is the approximate junction threshold voltage of a germanium diode?

Select	Answer
A	1.0 volts
B	0.3 volts
C	0.1 volt
D	0.7 volts

23. - G6B10

What two devices in an Amateur Radio station might be connected using a USB interface?

Select	Answer
A	Computer and transceiver
B	Amplifier and antenna
C	Microphone and transceiver
D	Power supply and amplifier

24. - G7A02

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

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

25. - G7B06

What is a shift register?

Select	Answer
A	A digital mixer
B	A clocked array of circuits that passes data in steps along the array
C	An analog mixer
D	An array of operational amplifiers used for tri-state arithmetic operations

26. - G7C02

Which circuit is used to combine signals from the carrier oscillator and speech amplifier then send the result to the filter in some single sideband phone transmitters?

Select	Answer
A	Discriminator
B	IF amplifier
C	Detector
D	Balanced modulator

27. - G8A03

What is the name of the process that changes the instantaneous frequency of an RF wave to convey information?

Select	Answer
A	Frequency convolution
B	Frequency modulation
C	Frequency transformation
D	Frequency conversion

28. - G8B04

What is the stage in a VHF FM transmitter that generates a harmonic of a lower frequency signal to reach the desired operating frequency?

Select	Answer
A	Pre-emphasis network
B	Mixer
C	Multiplier
D	Reactance modulator

29. - G8C11

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

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

30. - G9A05

How does the attenuation of coaxial cable change as the frequency of the signal it is carrying increases?

Select	Answer
A	Attenuation reaches a maximum at approximately 18 MHz
B	Attenuation increases
C	Attenuation is independent of frequency
D	Attenuation decreases

31. - G9B11

What is the approximate length for a 1/2 wave dipole antenna cut for 3.550 MHz?

Select	Answer
A	42 feet
B	263 feet
C	84 feet
D	131 feet

32. - G9C09

How does the gain of two 3-element horizontally polarized Yagi antennas spaced vertically 1/2 wavelength apart typically compare to the gain of a single 3-element Yagi?

Select	Answer
A	Approximately 6 dB higher
B	Approximately 9 dB higher
C	Approximately 3 dB higher
D	Approximately 1.5 dB higher

33. - G9D04

What is the primary purpose of antenna traps?

Select	Answer
A	To permit multiband operation
B	To prevent out of band operation
C	To provide balanced feed point impedance
D	To notch spurious frequencies

34. - G0A05

What must you do if an evaluation of your station shows RF energy radiated from your station exceeds permissible limits?

Select	Answer
A	Take action to prevent human exposure to the excessive RF fields
B	Secure written permission from your neighbors to operate above the controlled MPE limits
C	File an Environmental Impact Statement (EIS-97) with the FCC
D	All of these choices are correct

35. - G0B15

Which of the following is true of an emergency generator installation?

Select	Answer
A	Fuel should be stored near the generator for rapid refueling in case of an emergency
B	The generator must be insulated from ground
C	The generator should be located in a well-ventilated area
D	All of these choices are correct