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. - G1A02

On which of the following bands is phone operation prohibited?

Select	Answer
A	17 meters
B	30 meters
C	12 meters
D	160 meters

2. - G1B01

What is the maximum height above ground to which an antenna structure may be erected without requiring notification to the FAA and registration with the FCC, provided it is not at or near a public use airport?

Select	Answer
A	300 feet
B	50 feet
C	100 feet
D	200 feet

3. - G1C10

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

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

4. - G1D02

What license examinations may you administer when you are an accredited VE holding a General Class operator license?

Select	Answer
A	Extra, General and Technician
B	General only
C	General and Technician
D	Technician only

5. - G1E09

What language must be used when identifying your station if you are using a language other than English in making a contact using phone emission?

Select	Answer
A	English only
B	English, Spanish, French, or German
C	Any language recognized by the United Nations
D	The language being used for the contact

6. - G2A05

Which mode of voice communication is most commonly used on the HF amateur bands?

Select	Answer
A	Single sideband
B	Phase modulation
C	Double sideband
D	Frequency modulation

7. - G2B10

When may the FCC restrict normal frequency operations of amateur stations participating in RACES?

Select	Answer
A	When they declare a temporary state of communication emergency
B	When they seize your equipment for use in disaster communications
C	When the President's War Emergency Powers have been invoked
D	Only when all amateur stations are instructed to stop transmitting

8. - G2C04

What does the Q signal "QRL?" mean?

Select	Answer
A	"Will you keep the frequency clear?"
B	"Are you busy?", or "Is this frequency in use?"
C	"Are you listening only for a specific station?"
D	"Are you operating full break-in" or "Can you operate full break-in?"

9. - G2D01

What is the Amateur Auxiliary to the FCC?

Select	Answer
A	Amateur volunteers who are formally enlisted to monitor the airwaves for rules violations
B	Amateur volunteers who use their station equipment to help civil defense organizations in times of emergency
C	Amateur volunteers who conduct amateur licensing examinations
D	Amateur volunteers who conduct frequency coordination for amateur VHF repeaters

10. - G2E14

What could be wrong if you cannot decode an RTTY or other FSK signal even though it is apparently tuned in properly?

Select	Answer
A	You may have selected the wrong baud rate
B	The mark and space frequencies may be reversed
C	You may be listening on the wrong sideband
D	All of these choices are correct

11. - G3A15

How long does it take charged particles from coronal mass ejections to affect radio propagation on the Earth?

Select	Answer
A	20 to 40 hours
B	4 to 8 minutes
C	28 days
D	14 days

12. - G3B12

What factor or factors affect the MUF?

Select	Answer
A	Time of day and season
B	Path distance and location
C	All of these choices are correct
D	Solar radiation and ionospheric disturbances

13. - G3C02

Where on the Earth do ionospheric layers reach their maximum height?

Select	Answer
A	Where the Sun has just set
B	Where the Sun is on the opposite side of the Earth
C	Where the Sun is rising
D	Where the Sun is overhead

14. - G4A09

Why is a time delay sometimes included in a transmitter keying circuit?

Select	Answer
A	To allow time for transmit-receive changeover operations to complete properly before RF output is allowed
B	To prevent stations from interfering with one another
C	To allow the transmitter power regulators to charge properly
D	To allow time for a warning signal to be sent to other stations

15. - G4B10

Which of the following can be determined with a directional wattmeter?

Select	Answer
A	Antenna front-to-back ratio
B	Radio wave propagation
C	Standing wave ratio
D	RF interference

16. - G4C13

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

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

17. - G4D04

What does an S meter measure?

Select	Answer
A	Impedance
B	Received signal strength
C	Conductance
D	Transmitter power output

18. - G4E02

What is the purpose of a corona ball on a HF mobile antenna?

Select	Answer
A	To reduce the chance of damage if the antenna should strike an object
B	To narrow the operating bandwidth of the antenna
C	To increase the "Q" of the antenna
D	To reduce high voltage discharge from the tip of the antenna

19. - G5A13

Which of the following devices can be used for impedance matching at radio frequencies?

Select	Answer
A	A transformer
B	A length of transmission line
C	A Pi-network
D	All of these choices are correct

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	625 watts
B	2500 watts
C	5000 watts
D	8.75 watts

21. - G5C14

Which of the following components should be added to an inductor to increase the inductance?

Select	Answer
A	An inductor in parallel
B	A resistor in parallel
C	An inductor in series
D	A capacitor in series

22. - G6A18

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

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

23. - G6B15

What is the main reason to use keyed connectors instead of non-keyed types?

Select	Answer
A	All of these choices are correct
B	Higher current carrying capacity
C	Prevention of use by unauthorized persons
D	Reduced chance of incorrect mating

24. - G7A04

What is the peak-inverse-voltage across the rectifier in a half-wave power supply?

Select	Answer
A	Two times the normal peak output voltage of the power supply
B	Equal to the normal output voltage of the power supply
C	One-half the normal peak output voltage of the power supply
D	One-half the normal output voltage of the power supply

25. - G7B14

Which of the following describes a linear amplifier?

Select	Answer
A	An amplifier in which the output preserves the input waveform
B	A Class C high efficiency amplifier
C	Any RF power amplifier used in conjunction with an amateur transceiver
D	An amplifier used as a frequency multiplier

26. - G7C07

What is the simplest combination of stages that implement a superheterodyne receiver?

Select	Answer
A	HF oscillator, mixer, detector
B	RF amplifier, detector, audio amplifier
C	RF amplifier, mixer, IF discriminator
D	HF oscillator, prescaler, audio amplifier

27. - G8A05

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

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

28. - G8B03

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

Select	Answer
A	Cancellation
B	Phase inverting
C	Synthesizing
D	Heterodyning

29. - G8C08

Which of the following statements is true about PSK31?

Select	Answer
A	Higher power is needed as compared to RTTY for similar error rates
B	Varicode Error Correction is used to ensure accurate message reception
C	Upper case letters make the signal stronger
D	Upper case letters use longer Varicode signals and thus slow down transmission

30. - G9A07

What must be done to prevent standing waves on an antenna feed line?

Select	Answer
A	The feed line must be cut to a length equal to an even number of physical half wavelengths
B	The antenna feed point impedance must be matched to the characteristic impedance of the feed line
C	The antenna feed point must be at DC ground potential
D	The feed line must be cut to a length equal to an odd number of electrical quarter wavelengths

31. - G9B06

Where should the radial wires of a ground-mounted vertical antenna system be placed?

Select	Answer
A	On the surface of the Earth or buried a few inches below the ground
B	As high as possible above the ground
C	At the center of the antenna
D	Parallel to the antenna element

32. - G9C18

What happens when the feed point of a quad antenna of any shape is moved from the midpoint of the top or bottom to the midpoint of either side?

Select	Answer
A	The radiated signal becomes circularly polarized
B	The polarization of the radiated signal changes from horizontal to vertical
C	The polarization of the radiated signal changes from vertical to horizontal
D	There is no change in polarization

33. - G9D03

At what height above ground is an NVIS antenna typically installed?

Select	Answer
A	As close to 1/2 wavelength as possible
B	Height is not critical as long as it is significantly more than 1/2 wavelength
C	As close to one wavelength as possible
D	Between 1/10 and 1/4 wavelength

34. - G0A06

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

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

35. - G0B08

What should be done by any person preparing to climb a tower that supports electrically powered devices?

Select	Answer
A	All of these choices are correct
B	Notify the electric company that a person will be working on the tower
C	Unground the base of the tower
D	Make sure all circuits that supply power to the tower are locked out and tagged