Wv Investigation 4 Question Preview (ID: 47580)
Fiber Optics.
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How do fiber optics move light to pass along a message?
a) Total internal refraction.
b) Total internal reflection.
c) Light motion
d) Total internal motion..
Which type of information transmitter is the best for sending messages?
a) Optical fibers.
b) Electrical wires.
c) Telephone wires.
d) Television cable.
To listen to a radio station you turn the dial to the
a) optic fiber.
b) carrier wave frequency.
c) amplitude modulator.
d) frequency modulator.
AM means
a) amplitude modulation.
b) angry modulation.
c) any modulation.
d) amplitude and frequency modulation.
FM means
a) for anyone modulation.
b) amplitude and frequency modulation.
c) amplitude modulation.
d) frequency modulation.
Computers can send messages using the _____ system.
a) A-E
b) gate
c) binary
d) letters and numbers
When you send a text message, your words and images get converted into _____ before being sent.
a) electromagnetic
b) binary
c) waves
d) fiber optics
Which type of signal is better?
a) Analog signal
b) Digital signal
c)
d)
Binary is a message-transfer language that uses
a) zeroes and ones
b) A's and B's
c) zeroes, ones and twos
d) gates and ones
Why do FM stations sound better than AM stations?
a) They are more affected by electrical noise.
b) They change sound so it's better.
c) They are less affected by electrical noise.
d) They have frequency modulation.
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