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

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 transmitted on frequencies above 1215 MHz
C	When it is unintentionally transmitted from the background at the transmitter
D	At any time, as long as it produces no spurious emissions

3. - G1C11

What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 2-meter band?

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

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

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

6. - G2A01

Which sideband is most commonly used for voice communications on frequencies of 14 MHz or higher?

Select	Answer
A	Lower sideband
B	Double sideband
C	Vestigial sideband
D	Upper sideband

7. - G2B02

What is the first thing you should do if you are communicating with another amateur station and hear a station in distress break in?

Select	Answer
A	Continue your communication because you were on the frequency first
B	Change to a different frequency
C	Immediately cease all transmissions
D	Acknowledge the station in distress and determine what assistance may be needed

8. - G2C01

Which of the following describes full break-in telegraphy (QSK)?

Select	Answer
A	An operator must activate a manual send/receive switch before and after every transmission
B	Transmitting stations can receive between code characters and elements
C	Breaking stations send the Morse code prosign BK
D	Automatic keyers are used to send Morse code instead of hand keys

9. - G2D08

What is a reason why many amateurs keep a station log?

Select	Answer
A	The ITU requires a log of all international third party traffic
B	To help with a reply if the FCC requests information
C	The log provides evidence of operation needed to renew a license without retest
D	The ITU requires a log of all international contacts

10. - G2E11

What is indicated on a waterfall display by one or more vertical lines adjacent to a PSK31 signal?

Select	Answer
A	Long Path propagation
B	Backscatter propagation
C	Overmodulation
D	Insufficient modulation

11. - G3A14

How are radio communications usually affected by the charged particles that reach the Earth from solar coronal holes?

Select	Answer
A	HF communications are improved
B	VHF/UHF ducting is disturbed
C	VHF/UHF ducting is improved
D	HF communications are disturbed

12. - G3B05

What usually happens to radio waves with frequencies below the MUF and above the LUF when they are sent into the ionosphere?

Select	Answer
A	They are amplified by interaction with the ionosphere
B	They are bent and trapped in the ionosphere to circle the Earth
C	They are bent back to the Earth
D	They pass through the ionosphere

13. - G3C08

Why are HF scatter signals in the skip zone usually weak?

Select	Answer
A	Propagation is through ground waves which absorb most of the signal energy
B	Propagations is through ducts in F region which absorb most of the energy
C	Signals are scattered from the magnetosphere which is not a good reflector
D	Only a small part of the signal energy is scattered into the skip zone

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

16. - G4C12

Which of the following is an advantage of a receiver DSP IF filter as compared to an analog filter?

Select	Answer
A	A wide range of filter bandwidths and shapes can be created
B	Fewer digital components are required
C	The DSP filter is much more effective at VHF frequencies
D	Mixing products are greatly reduced

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	7.175 to 7.178 MHz
B	7.1765 to 7.1795 MHz
C	7.178 to 7.184 MHz
D	7.178 to 7.181 MHz

18. - G4E09

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

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

19. - G5A10

What unit is used to measure impedance?

Select	Answer
A	Volt
B	Ohm
C	Ampere
D	Watt

20. - G5B14

What is the output PEP from a transmitter if an oscilloscope measures 500 volts peak-to-peak across a 50 ohm resistive load connected to the transmitter output?

Select	Answer
A	2500 watts
B	8.75 watts
C	5000 watts
D	625 watts

21. - G5C16

Why is the conductor of the primary winding of many voltage step up transformers larger in diameter than the conductor of the secondary winding?

Select	Answer
A	To prevent parasitic oscillations due to resistive losses in the primary
B	To insure that the volume of the primary winding is equal to the volume of the secondary winding
C	To improve the coupling between the primary and secondary
D	To accommodate the higher current of the primary

22. - G6A15

Which of the following is an advantage of an electrolytic capacitor?

Select	Answer
A	Tight tolerance
B	Much less leakage than any other type
C	High capacitance for a given volume
D	Inexpensive RF capacitor

23. - G6B05

What is meant when memory is characterized as non-volatile?

Select	Answer
A	The stored information cannot be changed once written
B	It is resistant to radiation damage
C	The stored information is maintained even if power is removed
D	It is resistant to high temperatures

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	Capacitors and inductors
D	Diodes

25. - G7B07

What are the basic components of virtually all sine wave oscillators?

Select	Answer
A	A filter and an amplifier operating in a feedback loop
B	A circulator and a filter operating in a feed-forward loop
C	A frequency multiplier and a mixer
D	An amplifier and a divider

26. - G7C09

Which of the following is needed for a Digital Signal Processor IF filter?

Select	Answer
A	All of the these choices are correct
B	An analog to digital converter
C	A digital to analog converter
D	A digital processor chip

27. - G8A09

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

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

28. - G8B10

What is the relationship between transmitted symbol rate and bandwidth?

Select	Answer
A	Higher symbol rates require wider bandwidth
B	Lower symbol rates require wider bandwidth
C	Symbol rate and bandwidth are not related
D	Bandwidth is always half the symbol rate

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. - G9A09

What standing wave ratio will result when connecting a 50 ohm feed line to a non-reactive load having 200 ohm impedance?

Select	Answer
A	4:1
B	1:2
C	2:1
D	1:4

31. - G9B05

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

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

32. - G9C05

How does increasing boom length and adding directors affect a Yagi antenna?

Select	Answer
A	Front to side ratio decreases
B	Front to back ratio decreases
C	Gain increases
D	Beamwidth increases

33. - G9D07

Which of the following describes a log periodic antenna?

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

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

35. - G0B13

What must you do when powering your house from an emergency generator?

Select	Answer
A	Insure that the generator is not grounded
B	All of these choices are correct
C	Insure that all lightning grounds are disconnected
D	Disconnect the incoming utility power feed