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. - G1A02

On which of the following bands is phone operation prohibited?

Select	Answer
A	30 meters
B	160 meters
C	17 meters
D	12 meters

2. - G1B03

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

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

3. - G1C01

What is the maximum transmitting power an amateur station may use on 10.140 MHz?

Select	Answer
A	1000 watts PEP output
B	2000 watts PEP output
C	1500 watts PEP output
D	200 watts PEP output

4. - G1D06

When must you add the special identifier "AG" after your call sign if you are a Technician Class licensee and have a CSCE for General Class operator privileges, but the FCC has not yet posted your upgrade on its website ?

Select	Answer
A	Whenever you operate using Technician frequency privileges
B	Whenever you operate using General Class frequency privileges
C	Whenever you operate on any amateur frequency
D	A special identifier is not required as long as your General Class license application has been filed with the FCC

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. - G2A11

What does the expression "CQ DX" usually indicate?

Select	Answer
A	A distress call
B	A general call for any station
C	The caller is listening for a station in Germany
D	The caller is looking for any station outside their own country

7. - G2B11

What frequency should be used to send a distress call?

Select	Answer
A	Only frequencies that are within your operating privileges
B	Whichever frequency has the best chance of communicating the distress message
C	Only frequencies authorized for RACES or ARES stations
D	Only frequencies used by police, fire or emergency medical services

8. - G2C04

What does the Q signal "QRL?" mean?

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

9. - G2D10

What is QRP operation?

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

10. - G2E02

How can a PACTOR modem or controller be used to determine if the channel is in use by other PACTOR stations?

Select	Answer
A	Unplug the data connector temporarily and see if the channel-busy indication is turned off
B	Send the message: "Is this frequency in use?"
C	Transmit UI packets several times and wait to see if there is a response from another PACTOR station
D	Put the modem or controller in a mode which allows monitoring communications without a connection

11. - G3A10

What causes HF propagation conditions to vary periodically in a 28 day cycle?

Select	Answer
A	The position of the Moon in its orbit
B	Cyclic variation in the Earth's radiation belts
C	The Sun's rotation on its axis
D	Long term oscillations in the upper atmosphere

12. - G3B10

What is the approximate maximum distance along the Earth's surface that is normally covered in one hop using the E region?

Select	Answer
A	180 miles
B	2,500 miles
C	12,000 miles
D	1,200 miles

13. - G3C05

Why is long distance communication on the 40-meter, 60-meter, 80-meter and 160-meter bands more difficult during the day?

Select	Answer
A	The E layer is unstable during daylight hours
B	The F layer absorbs signals at these frequencies during daylight hours
C	The D layer absorbs signals at these frequencies during daylight hours
D	The F layer is unstable during daylight hours

14. - G4A06

What type of device is often used to match transmitter output impedance to an impedance not equal to 50 ohms?

Select	Answer
A	Balanced modulator
B	Q Multiplier
C	Antenna coupler or antenna tuner
D	SWR Bridge

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

16. - G4C03

What sound is heard from an audio device or telephone if there is interference from a nearby single sideband phone transmitter?

Select	Answer
A	A steady hum whenever the transmitter is on the air
B	On-and-off humming or clicking
C	Distorted speech
D	Clearly audible speech

17. - G4D08

What frequency range is occupied by a 3 kHz LSB signal when the displayed carrier frequency is set to 7.178 MHz?

Select	Answer
A	7.1765 to 7.1795 MHz
B	7.178 to 7.184 MHz
C	7.178 to 7.181 MHz
D	7.175 to 7.178 MHz

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 reduce high voltage discharge from the tip of the antenna
C	To reduce the chance of damage if the antenna should strike an object
D	To narrow the operating bandwidth of the antenna

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 can deliver maximum power to the load
C	The electrical load is shorted
D	The source delivers minimum power to the load

20. - G5B09

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

Select	Answer
A	24 volts
B	34 volts
C	12 volts
D	8.5 volts

21. - G5C17

What is the value in nanofarads (nF) of a 22,000 pF capacitor?

Select	Answer
A	2.2 nF
B	0.22 nF
C	22 nF
D	220 nF

22. - G6A07

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

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

23. - G6B11

What is a microprocessor?

Select	Answer
A	A low voltage amplifier used in a microwave transmitter modulator stage
B	A low power analog signal processor used as a microwave detector
C	A microwave detector, amplifier, and local oscillator on a single integrated circuit
D	A computer on a single integrated circuit

24. - G7A06

What portion of the AC cycle is converted to DC by a full-wave rectifier?

Select	Answer
A	180 degrees
B	90 degrees
C	360 degrees
D	270 degrees

25. - G7B14

Which of the following describes a linear amplifier?

Select	Answer
A	Any RF power amplifier used in conjunction with an amateur transceiver
B	An amplifier in which the output preserves the input waveform
C	A Class C high efficiency amplifier
D	An amplifier used as a frequency multiplier

26. - G7C10

How is Digital Signal Processor filtering accomplished?

Select	Answer
A	By converting the signal from digital to analog and taking the difference of mixing products
B	By converting the signal from analog to digital and using digital processing
C	By using direct signal phasing
D	By differential spurious phasing

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 modulation
B	Frequency transformation
C	Frequency conversion
D	Frequency convolution

28. - G8B07

What is the frequency deviation for a 12.21 MHz reactance modulated oscillator in a 5 kHz deviation, 146.52 MHz FM phone transmitter?

Select	Answer
A	416.7 Hz
B	101.75 Hz
C	60 kHz
D	5 kHz

29. - G8C03

What part of a data packet contains the routing and handling information?

Select	Answer
A	Preamble
B	Header
C	Directory
D	Footer

30. - G9A11

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

Select	Answer
A	1:1
B	0:0
C	2:1
D	50:50

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

32. - G9C08

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

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

33. - G9D05

What is an advantage of vertical stacking of horizontally polarized Yagi antennas?

Select	Answer
A	It narrows the main lobe in elevation
B	It allows quick selection of vertical or horizontal polarization
C	It allows simultaneous vertical and horizontal polarization
D	It narrows the main lobe in azimuth

34. - G0A09

What type of instrument can be used to accurately measure an RF field?

Select	Answer
A	A calibrated field strength meter with a calibrated antenna
B	An SWR meter with a peak-reading function
C	A receiver with an S meter
D	An oscilloscope with a high-stability crystal marker generator

35. - G0B03

Which size of fuse or circuit breaker would be appropriate to use with a circuit that uses AWG number 14 wiring?

Select	Answer
A	100 amperes
B	60 amperes
C	30 amperes
D	15 amperes