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US Amateur Radio - General (Element 3, 2015-2019) Practice Test

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1. - G1A10

Which of the following frequencies is available to a control operator holding a General Class license?

SelectAnswer
A28.550 MHz
BAll of these choices are correct
C28.020 MHz
D28.350 MHz

2. - G1B08

When choosing a transmitting frequency, what should you do to comply with good amateur practice?

SelectAnswer
AMonitor the frequency before transmitting
BAll of these choices are correct
CInsure that the frequency and mode selected are within your license class privileges
DFollow generally accepted band plans agreed to by the Amateur Radio community

3. - G1C10

What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 10-meter band?

SelectAnswer
A1200 baud
B56 kilobaud
C19.6 kilobaud
D300 baud

4. - G1D11

If a person has an expired FCC issued amateur radio license of General Class or higher, what is required before they can receive a new license?

SelectAnswer
AThe applicant must pass the current element 2 exam
BThey must have a letter from the FCC showing they once held an amateur or commercial license
CThere are no requirements other than being able to show a copy of the expired license
DThe applicant must be able to produce a copy of a page from a call book published in the USA showing his or her name and address

5. - G1E02

When may a 10-meter repeater retransmit the 2-meter signal from a station having a Technician Class control operator?

SelectAnswer
AOnly if the 10-meter repeater control operator holds at least a General Class license
BUnder no circumstances
COnly during an FCC declared general state of communications emergency
DOnly if the station on 10-meters is operating under a Special Temporary Authorization allowing such retransmission

6. - G2A06

Which of the following is an advantage when using single sideband as compared to other analog voice modes on the HF amateur bands?

SelectAnswer
AEase of tuning on receive and immunity to impulse noise
BVery high fidelity voice modulation
CLess bandwidth used and greater power efficiency
DLess subject to interference from atmospheric static crashes

7. - G2B09

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

SelectAnswer
AOnly a person holding an FCC issued amateur operator license
BAny control operator when normal communication systems are operational
CA person holding an FCC issued amateur operator license or an appropriate government official
DOnly a RACES net control operator

8. - G2C10

What does the Q signal "QRN" mean?

SelectAnswer
ASend more slowly
BZero beat my signal
CI am troubled by static
DStop sending

9. - G2D07

Which of the following is required by the FCC rules when operating in the 60-meter band?

SelectAnswer
AYou must keep a record of the date, time, frequency, power level and stations worked
BYou must keep a record of the manufacturer of your equipment and the antenna used
CYou must keep a record of all third party traffic
DIf you are using other than a dipole antenna, you must keep a record of the gain of your antenna

10. - G2E12

Which of the following describes a waterfall display?

SelectAnswer
AFrequency is vertical, signal strength is intensity, time is horizontal
BFrequency is horizontal, signal strength is intensity, time is vertical
CFrequency is horizontal, signal strength is vertical, time is intensity
DFrequency is vertical, signal strength is horizontal, time is intensity

11. - G3A02

What effect does a Sudden Ionospheric Disturbance have on the daytime ionospheric propagation of HF radio waves?

SelectAnswer
ANone, because only areas on the night side of the Earth are affected
BIt enhances propagation on all HF frequencies
CIt disrupts signals on lower frequencies more than those on higher frequencies
DIt disrupts communications via satellite more than direct communications

12. - G3B08

What does MUF stand for?

SelectAnswer
AThe Minimum Usable Frequency for communications between two points
BThe Maximum Usable Frequency during a 24 hour period
CThe Minimum Usable Frequency during a 24 hour period
DThe Maximum Usable Frequency for communications between two points

13. - G3C13

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

SelectAnswer
ALong path HF propagation at sunrise and sunset
BPropagation near the MUF
CShort distance MF or HF propagation using high elevation angles
DDouble hop propagation near the LUF

14. - G4A11

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

SelectAnswer
ATo change frequency rapidly
BTo permit listening on a different frequency from that on which you are transmitting
CTo tune in stations that are slightly off frequency without changing your transmit frequency
DTo avoid interference from stations very close to the receive frequency

15. - G4B02

Which of the following is an advantage of an oscilloscope versus a digital voltmeter?

SelectAnswer
AInput impedance is much lower
BComplex waveforms can be measured
CComplex impedances can be easily measured
DAn oscilloscope uses less power

16. - G4C10

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

SelectAnswer
AYou receive reports of harmonic interference from your station
BAn item of station equipment starts to draw excessive amounts of current
CThe SWR reading for one or more antennas is suddenly very high
DYou receive reports of "hum" on your station's transmitted signal

17. - G4D08

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

SelectAnswer
A7.1765 to 7.1795 MHz
B7.178 to 7.181 MHz
C7.175 to 7.178 MHz
D7.178 to 7.184 MHz

18. - G4E10

What is the reason that a series diode is connected between a solar panel and a storage battery that is being charged by the panel?

SelectAnswer
AThe diode greatly increases the efficiency during times of high illumination
BThe diode serves to regulate the charging voltage to prevent overcharge
CThe diode limits the current flowing from the panel to a safe value
DThe diode prevents self-discharge of the battery though the panel during times of low or no illumination

19. - G5A09

What unit is used to measure reactance?

SelectAnswer
AFarad
BOhm
CAmpere
DSiemens

20. - G5B12

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

SelectAnswer
A173 volts
B245 volts
C346 volts
D692 volts

21. - G5C11

What is the inductance of a 20 millihenry inductor connected in series with a 50 millihenry inductor?

SelectAnswer
A70 millihenrys
B1000 millihenrys
C14.3 millihenrys
D0.07 millihenrys

22. - G6A12

What is the primary purpose of a screen grid in a vacuum tube?

SelectAnswer
ATo increase efficiency
BTo reduce grid-to-plate capacitance
CTo decrease plate resistance
DTo increase the control grid resistance

23. - G6B03

Which of the following is an advantage of CMOS integrated circuits compared to TTL integrated circuits?

SelectAnswer
ABetter suited for power supply regulation
BHigh power handling capability
CBetter suited for RF amplification
DLow power consumption

24. - G7A06

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

SelectAnswer
A360 degrees
B90 degrees
C270 degrees
D180 degrees

25. - G7B14

Which of the following describes a linear amplifier?

SelectAnswer
AAny RF power amplifier used in conjunction with an amateur transceiver
BAn amplifier in which the output preserves the input waveform
CA Class C high efficiency amplifier
DAn amplifier used as a frequency multiplier

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?

SelectAnswer
ADetector
BIF amplifier
CDiscriminator
DBalanced modulator

27. - G8A02

What is the name of the process that changes the phase angle of an RF wave to convey information?

SelectAnswer
APhase convolution
BRadian inversion
CPhase modulation
DAngle convolution

28. - G8B08

Why is it important to know the duty cycle of the mode you are using when transmitting?

SelectAnswer
AAll of these choices are correct
BSome modes have high duty cycles which could exceed the transmitter's average power rating.
CTo allow time for the other station to break in during a transmission
DTo aid in tuning your transmitter

29. - G8C03

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

SelectAnswer
AFooter
BPreamble
CHeader
DDirectory

30. - G9A13

What standing wave ratio will result when connecting a 50 ohm feed line to an antenna that has a purely resistive 300 ohm feed point impedance?

SelectAnswer
A3:1
BYou cannot determine SWR from impedance values
C6:1
D1.5:1

31. - G9B01

What is one disadvantage of a directly fed random-wire HF antenna?

SelectAnswer
AIt is more effective on the lower HF bands than on the higher bands
BYou may experience RF burns when touching metal objects in your station
CIt produces only vertically polarized radiation
DIt must be longer than 1 wavelength

32. - G9C01

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

SelectAnswer
ALarger diameter elements
BTapered-diameter elements
CCloser element spacing
DLoading coils in series with the element

33. - G9D05

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

SelectAnswer
AIt allows quick selection of vertical or horizontal polarization
BIt allows simultaneous vertical and horizontal polarization
CIt narrows the main lobe in azimuth
DIt narrows the main lobe in elevation

34. - G0A05

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

SelectAnswer
AFile an Environmental Impact Statement (EIS-97) with the FCC
BAll of these choices are correct
CTake action to prevent human exposure to the excessive RF fields
DSecure written permission from your neighbors to operate above the controlled MPE limits

35. - G0B11

Which of the following is good practice for lightning protection grounds?

SelectAnswer
ABends in ground wires must be made as close as possible to a right angle
BThey must be bonded to all buried water and gas lines
CLightning grounds must be connected to all ungrounded wiring
DThey must be bonded together with all other grounds