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	14305 kHz
B	14405 kHz
C	14005 kHz
D	14105 kHz

2. - G1B04

Which of the following must be true before amateur stations may provide communications to broadcasters for dissemination to the public?

Select	Answer
A	All of these choices are correct
B	The FCC must have declared a state of emergency
C	The communications must directly relate to the immediate safety of human life or protection of property and there must be no other means of communication reasonably available before or at the time of the event
D	The communications must be approved by a local emergency preparedness official and conducted on officially designated frequencies

3. - G1C10

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

Select	Answer
A	19.6 kilobaud
B	1200 baud
C	56 kilobaud
D	300 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 using General Class frequency privileges
B	Whenever you operate using Technician 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 operating within one mile of an FCC Monitoring Station
B	When using a band where the Amateur Service is secondary
C	All of these choices are correct
D	When a station is transmitting spread spectrum emissions

6. - G2A04

Which mode is most commonly used for voice communications on the 17-meter and 12-meter bands?

Select	Answer
A	Double sideband
B	Vestigial sideband
C	Upper sideband
D	Lower 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	Immediately cease all transmissions
C	Acknowledge the station in distress and determine what assistance may be needed
D	Change to a different frequency

8. - G2C11

What does the Q signal "QRV" mean?

Select	Answer
A	I am ready to receive messages
B	There is interference on the frequency
C	I am quitting for the day
D	You are sending too fast

9. - G2D04

Which of the following describes an azimuthal projection map?

Select	Answer
A	A map that shows accurate land masses
B	A map that shows true bearings and distances from a particular location
C	A map that shows the number of degrees longitude that an amateur satellite appears to move westward at the equator with each orbit
D	A map that shows the angle at which an amateur satellite crosses the equator

10. - G2E05

What is the standard sideband used to generate a JT65 or JT9 digital signal when using AFSK in any amateur band?

Select	Answer
A	DSB
B	LSB
C	USB
D	SSB

11. - G3A02

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

Select	Answer
A	It disrupts communications via satellite more than direct communications
B	None, because only areas on the night side of the Earth are affected
C	It disrupts signals on lower frequencies more than those on higher frequencies
D	It enhances propagation on all HF frequencies

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

13. - G3C07

What makes HF scatter signals often sound distorted?

Select	Answer
A	The E-region is not present
B	Energy is scattered into the skip zone through several different radio wave paths
C	The ionospheric layer involved is unstable
D	Ground waves are absorbing much of the signal

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	A pronounced peak
D	No change will be observed

15. - G4B01

What item of test equipment contains horizontal and vertical channel amplifiers?

Select	Answer
A	An oscilloscope
B	A signal generator
C	An ammeter
D	An ohmmeter

16. - G4C07

What is one good way to avoid unwanted effects of stray RF energy in an amateur station?

Select	Answer
A	Install an RF filter in series with the ground wire
B	Use a ground loop for best conductivity
C	Install a few ferrite beads on the ground wire where it connects to your station
D	Connect all equipment grounds together

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 7.181 MHz
D	7.178 to 7.184 MHz

18. - G4E03

Which of the following direct, fused power connections would be the best for a 100 watt HF mobile installation?

Select	Answer
A	To the battery using resistor wire
B	To the alternator or generator using resistor wire
C	To the alternator or generator using heavy gauge wire
D	To the battery using heavy gauge wire

19. - G5A05

How does an inductor react to AC?

Select	Answer
A	As the amplitude of the applied AC increases, the reactance decreases
B	As the amplitude of the applied AC increases, the reactance increases
C	As the frequency of the applied AC increases, the reactance decreases
D	As the frequency of the applied AC increases, the reactance increases

20. - G5B07

What value of an AC signal produces the same power dissipation in a resistor as a DC voltage of the same value?

Select	Answer
A	The peak value
B	The reciprocal of the RMS value
C	The peak-to-peak value
D	The RMS value

21. - G5C05

If three equal value resistors in series produce 450 ohms, what is the value of each resistor?

Select	Answer
A	1500 ohms
B	175 ohms
C	150 ohms
D	90 ohms

22. - G6A18

What is an advantage of using a ferrite core toroidal inductor?

Select	Answer
A	Large values of inductance may be obtained
B	Most of the magnetic field is contained in the core
C	The magnetic properties of the core may be optimized for a specific range of frequencies
D	All of these choices are correct

23. - G6B08

How is an LED biased when emitting light?

Select	Answer
A	Beyond cutoff
B	Forward Biased
C	Reverse Biased
D	At the Zener voltage

24. - G7A09

Which symbol in figure G7-1 represents a field effect transistor?

Select	Answer
A	Symbol 2
B	Symbol 1
C	Symbol 5
D	Symbol 4

25. - G7B05

How many states does a 3-bit binary counter have?

Select	Answer
A	3
B	8
C	6
D	16

26. - G7C08

What type of circuit is used in many FM receivers to convert signals coming from the IF amplifier to audio?

Select	Answer
A	Phase inverter
B	Discriminator
C	Product detector
D	Mixer

27. - G8A06

What is one advantage of carrier suppression in a single sideband phone transmission versus full carrier amplitude modulation?

Select	Answer
A	Audio fidelity is improved
B	Greater modulation percentage is obtainable with lower distortion
C	Available transmitter power can be used more effectively
D	Simpler receiving equipment can be used

28. - G8B10

What is the relationship between transmitted symbol rate and bandwidth?

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

29. - G8C03

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

Select	Answer
A	Header
B	Directory
C	Footer
D	Preamble

30. - G9A02

What are the typical characteristic impedances of coaxial cables used for antenna feed lines at amateur stations?

Select	Answer
A	500 and 750 ohms
B	50 and 75 ohms
C	25 and 30 ohms
D	80 and 100 ohms

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

32. - G9C04

Which statement about a three-element, single-band Yagi antenna is true?

Select	Answer
A	The reflector is normally the shortest element
B	The director is normally the longest element
C	The reflector is normally the longest element
D	All of the elements must be the same length

33. - G9D11

Which of the following is a disadvantage of multiband antennas?

Select	Answer
A	They must be used with an antenna tuner
B	They must be fed with open wire line
C	They present low impedance on all design frequencies
D	They have poor harmonic rejection

34. - G0A06

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

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

35. - G0B10

Which of the following is a danger from lead-tin solder?

Select	Answer
A	RF energy can convert the lead into a poisonous gas
B	Tin in the solder can "cold flow" causing shorts in the circuit
C	Lead can contaminate food if hands are not washed carefully after handling the solder
D	High voltages can cause lead-tin solder to disintegrate suddenly

Figure G7-1