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. - G1A11

When General Class licensees are not permitted to use the entire voice portion of a particular band, which portion of the voice segment is generally available to them?

Select	Answer
A	The lower frequency end on frequencies below 7.3 MHz and the upper end on frequencies above 14.150 MHz
B	The upper frequency end
C	The lower frequency end
D	The upper frequency end on frequencies below 7.3 MHz and the lower end on frequencies above 14.150 MHz

2. - G1B09

When may an amateur station transmit communications in which the licensee or control operator has a pecuniary (monetary) interest?

Select	Answer
A	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
B	Only when there is no other means of communications readily available
C	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
D	Never

3. - G1C01

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

Select	Answer
A	200 watts PEP output
B	1500 watts PEP output
C	1000 watts PEP output
D	2000 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	A special identifier is not required as long as your General Class license application has been filed with the FCC
B	Whenever you operate using General Class frequency privileges
C	Whenever you operate using Technician frequency privileges
D	Whenever you operate on any amateur frequency

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

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	Lower sideband
C	Upper sideband
D	Double sideband

7. - G2B04

When selecting a CW transmitting frequency, what minimum separation should be used to minimize interference to stations on adjacent frequencies?

Select	Answer
A	3 to 6 kHz
B	150 to 500 Hz
C	1 to 3 kHz
D	5 to 50 Hz

8. - G2C07

When sending CW, what does a "C" mean when added to the RST report?

Select	Answer
A	100 percent copy
B	Report was read from an S meter rather than estimated
C	Chirpy or unstable signal
D	Key clicks

9. - G2D05

When is it permissible to communicate with amateur stations in countries outside the areas administered by the Federal Communications Commission?

Select	Answer
A	When the contact is with amateurs in any country as long as the communication is conducted in English
B	Only when the foreign country is a member of the International Amateur Radio Union
C	Only when the foreign country has a formal third party agreement filed with the FCC
D	When the contact is with amateurs in any country except those whose administrations have notified the ITU that they object to such communications

10. - G2E03

What symptoms may result from other signals interfering with a PACTOR or WINMOR transmission?

Select	Answer
A	Failure to establish a connection between stations
B	All of these choices are correct
C	Long pauses in message transmission
D	Frequent retries or timeouts

11. - G3A04

Which of the following are least reliable for long distance communications during periods of low solar activity?

Select	Answer
A	15 meters, 12 meters and 10 meters
B	30 meters and 20 meters
C	80 meters and 160 meters
D	60 meters and 40 meters

12. - G3B01

How might a sky-wave signal sound if it arrives at your receiver by both short path and long path propagation?

Select	Answer
A	Signal strength increased by 3 dB
B	Periodic fading approximately every 10 seconds
C	A well-defined echo might be heard
D	The signal might be cancelled causing severe attenuation

13. - G3C06

What is a characteristic of HF scatter signals?

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

14. - G4A11

Which of the following is a use for the IF shift control on a receiver?

Select	Answer
A	To permit listening on a different frequency from that on which you are transmitting
B	To avoid interference from stations very close to the receive frequency
C	To change frequency rapidly
D	To tune in stations that are slightly off frequency without changing your transmit frequency

15. - G4B03

Which of the following is the best instrument to use when checking the keying waveform of a CW transmitter?

Select	Answer
A	A wavemeter
B	A sidetone monitor
C	A field strength meter
D	An oscilloscope

16. - G4C05

What might be the problem if you receive an RF burn when touching your equipment while transmitting on an HF band, assuming the equipment is connected to a ground rod?

Select	Answer
A	Insulated wire has been used for the ground wire
B	The ground rod is resonant
C	The ground wire has high impedance on that frequency
D	Flat braid rather than round wire has been used for the ground wire

17. - G4D03

Which of the following can be the result of an incorrectly adjusted speech processor?

Select	Answer
A	Splatter
B	All of these choices are correct
C	Excessive background pickup
D	Distorted speech

18. - G4E11

Which of the following is a disadvantage of using wind as the primary source of power for an emergency station?

Select	Answer
A	All of these choices are correct
B	A large energy storage system is needed to supply power when the wind is not blowing
C	The voltage and current ratings of such systems are not compatible with amateur equipment
D	The conversion efficiency from mechanical energy to electrical energy is less than 2 percent

19. - G5A04

Which of the following causes opposition to the flow of alternating current in a capacitor?

Select	Answer
A	Reluctance
B	Conductance
C	Admittance
D	Reactance

20. - G5B09

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

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

21. - G5C01

What causes a voltage to appear across the secondary winding of a transformer when an AC voltage source is connected across its primary winding?

Select	Answer
A	Capacitive coupling
B	Displacement current coupling
C	Mutual capacitance
D	Mutual inductance

22. - G6A19

How should the winding axes of two solenoid inductors be oriented to minimize their mutual inductance?

Select	Answer
A	In line
B	Interleaved
C	Parallel to each other
D	At right angles to each other

23. - G6B11

What is a microprocessor?

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

24. - G7A05

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

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

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 array of operational amplifiers used for tri-state arithmetic operations
D	An analog mixer

26. - G7C01

Which of the following is used to process signals from the balanced modulator then send them to the mixer in some single sideband phone transmitters?

Select	Answer
A	RF amplifier
B	Filter
C	Carrier oscillator
D	IF amplifier

27. - G8A05

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

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

28. - G8B06

What is the total bandwidth of an FM phone transmission having 5 kHz deviation and 3 kHz modulating frequency?

Select	Answer
A	5 kHz
B	16 kHz
C	3 kHz
D	8 kHz

29. - G8C10

How does forward error correction (FEC) allow the receiver to correct errors in received data packets?

Select	Answer
A	By using a parity bit with each character
B	By using the varicode character set
C	By transmitting redundant information with the data
D	By controlling transmitter output power for optimum signal strength

30. - G9A06

In what units is RF feed line loss usually expressed?

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

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

32. - G9C01

Which of the following would increase the bandwidth of a Yagi antenna?

Select	Answer
A	Larger diameter elements
B	Tapered-diameter elements
C	Loading coils in series with the element
D	Closer element spacing

33. - G9D05

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

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

34. - G0A06

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

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

35. - G0B01

Which wire or wires in a four-conductor connection should be attached to fuses or circuit breakers in a device operated from a 240 VAC single phase source?

Select	Answer
A	Only the two wires carrying voltage
B	All wires
C	Only the ground wire
D	Only the neutral wire