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. - G1A07

Which of the following frequencies is within the General Class portion of the 20-meter phone band?

Select	Answer
A	14005 kHz
B	14305 kHz
C	14105 kHz
D	14405 kHz

2. - G1B05

When may music be transmitted by an amateur station?

Select	Answer
A	When it is an incidental part of a manned space craft retransmission
B	When it is unintentionally transmitted from the background at the transmitter
C	When it is transmitted on frequencies above 1215 MHz
D	At any time, as long as it produces no spurious emissions

3. - G1C09

What is the maximum symbol rate permitted for RTTY or data emission transmitted on the 1.25-meter and 70-centimeter bands?

Select	Answer
A	19.6 kilobaud
B	56 kilobaud
C	1200 baud
D	300 baud

4. - G1D05

Which of the following must a person have before they can be an administering VE for a Technician Class license examination?

Select	Answer
A	Receipt of a CSCE for General Class
B	Notification to the FCC that you want to give an examination
C	An FCC General Class or higher license and VEC accreditation
D	Possession of a properly obtained telegraphy license

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

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?

Select	Answer
A	Less bandwidth used and greater power efficiency
B	Less subject to interference from atmospheric static crashes
C	Very high fidelity voice modulation
D	Ease of tuning on receive and immunity to impulse noise

7. - G2B01

Which of the following is true concerning access to frequencies in non-emergency situations?

Select	Answer
A	QSOs in progress always have priority
B	Except during FCC declared emergencies, no one has priority access to frequencies
C	Nets always have priority
D	Contest operations must always yield to non-contest use of frequencies

8. - G2C08

What prosign is sent to indicate the end of a formal message when using CW?

Select	Answer
A	AR
B	SK
C	BK
D	KN

9. - G2D07

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

Select	Answer
A	If you are using other than a dipole antenna, you must keep a record of the gain of your antenna
B	You must keep a record of all third party traffic
C	You must keep a record of the manufacturer of your equipment and the antenna used
D	You must keep a record of the date, time, frequency, power level and stations worked

10. - G2E07

What segment of the 80-meter band is most commonly used for digital transmissions?

Select	Answer
A	3500 - 3525 kHz
B	3700 - 3750 kHz
C	3775 - 3825 kHz
D	3570 - 3600 kHz

11. - G3A16

What is a possible benefit to radio communications resulting from periods of high geomagnetic activity?

Select	Answer
A	Reduced long delayed echoes
B	Auroras that can reflect VHF signals
C	Improved HF long path propagation
D	Higher signal strength for HF signals passing through the polar regions

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	The signal might be cancelled causing severe attenuation
C	A well-defined echo might be heard
D	Periodic fading approximately every 10 seconds

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 F 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 E layer is unstable during daylight hours

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	A pronounced dip
C	No change will be observed
D	A pronounced peak

15. - G4B12

What problem can occur when making measurements on an antenna system with an antenna analyzer?

Select	Answer
A	Strong signals from nearby transmitters can affect the accuracy of measurements
B	Connecting the analyzer to an antenna can cause it to absorb harmonics
C	The analyzer can be damaged if measurements outside the ham bands are attempted
D	Permanent damage to the analyzer may occur if it is operated into a high SWR

16. - G4C13

Which of the following can perform automatic notching of interfering carriers?

Select	Answer
A	Balanced mixing
B	Bandpass tuning
C	A noise limiter
D	A Digital Signal Processor (DSP) filter

17. - G4D01

What is the purpose of a speech processor as used in a modern transceiver?

Select	Answer
A	Increase the intelligibility of transmitted phone signals during poor conditions
B	Increase transmitter bass response for more natural sounding SSB signals
C	Prevent distortion of voice signals
D	Decrease high-frequency voice output to prevent out of band operation

18. - G4E08

What is the name of the process by which sunlight is changed directly into electricity?

Select	Answer
A	Photon decomposition
B	Photosynthesis
C	Photon emission
D	Photovoltaic conversion

19. - G5A02

What is reactance?

Select	Answer
A	Opposition to the flow of direct current caused by resistance
B	Opposition to the flow of alternating current caused by capacitance or inductance
C	A large spark produced at switch contacts when an inductor is de-energized
D	A property of ideal resistors in AC circuits

20. - G5B03

How many watts of electrical power are used if 400 VDC is supplied to an 800 ohm load?

Select	Answer
A	200 watts
B	3200 watts
C	0.5 watts
D	400 watts

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	Mutual capacitance
B	Mutual inductance
C	Displacement current coupling
D	Capacitive coupling

22. - G6A01

What is the minimum allowable discharge voltage for maximum life of a standard 12 volt lead acid battery?

Select	Answer
A	10.5 volts
B	8.5 volts
C	6 volts
D	12 volts

23. - G6B14

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

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

24. - G7A11

Which symbol in figure G7-1 represents an NPN junction transistor?

Select	Answer
A	Symbol 11
B	Symbol 1
C	Symbol 7
D	Symbol 2

25. - G7B03

Which of the following describes the function of a two input AND gate?

Select	Answer
A	Output is high when either or both inputs are low
B	Output is low when either or both inputs are high
C	Output is low only when both inputs are high
D	Output is high only when both inputs are high

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	IF amplifier
B	Balanced modulator
C	Detector
D	Discriminator

27. - G8A09

What control is typically adjusted for proper ALC setting on an amateur single sideband transceiver?

Select	Answer
A	Antenna inductance or capacitance
B	The RF clipping level
C	Transmit audio or microphone gain
D	Attenuator level

28. - G8B03

What is another term for the mixing of two RF signals?

Select	Answer
A	Synthesizing
B	Phase inverting
C	Heterodyning
D	Cancellation

29. - G8C06

What action results from a failure to exchange information due to excessive transmission attempts when using PACTOR or WINMOR?

Select	Answer
A	Packets will be routed incorrectly
B	Encoding reverts to the default character set
C	The checksum overflows
D	The connection is dropped

30. - G9A12

What standing wave ratio will result when connecting a 50 ohm feed line to a non-reactive load having 25 ohm impedance?

Select	Answer
A	2.5:1
B	You cannot determine SWR from impedance values
C	1.25:1
D	2:1

31. - G9B05

How does antenna height affect the horizontal (azimuthal) radiation pattern of a horizontal dipole HF antenna?

Select	Answer
A	Antenna height has no effect on the pattern
B	If the antenna is too high, the pattern becomes unpredictable
C	If the antenna is less than 1/2 wavelength high, the azimuthal pattern is almost omnidirectional
D	If the antenna is less than 1/2 wavelength high, radiation off the ends of the wire is eliminated

32. - G9C16

How does the gain of a two-element delta-loop beam compare to the gain of a two-element quad antenna?

Select	Answer
A	3 dB lower
B	About the same
C	2.54 dB higher
D	3 dB higher

33. - G9D07

Which of the following describes a log periodic antenna?

Select	Answer
A	SWR varies periodically as a function of boom length
B	Impedance varies periodically as a function of frequency
C	Gain varies logarithmically as a function of frequency
D	Length and spacing of the elements increase logarithmically from one end of the boom to the other

34. - G0A02

Which of the following properties is important in estimating whether an RF signal exceeds the maximum permissible exposure (MPE)?

Select	Answer
A	Its frequency
B	Its power density
C	Its duty cycle
D	All of these choices are correct

35. - G0B04

Which of the following is a primary reason for not placing a gasoline-fueled generator inside an occupied area?

Select	Answer
A	Danger of engine over torque
B	Lack of nitrogen for adequate combustion
C	Danger of carbon monoxide poisoning
D	Lack of oxygen for adequate combustion

Figure G7-1