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Wv Investigation 4
Test Description: Fiber optics
Instructions: Answer all questions to get your test result.
1) How do fiber optics move light to pass along a message?
A
Total internal refraction.
B
Light motion
C
Total internal motion..
D
Total internal reflection.
2) Which type of information transmitter is the best for sending messages?
A
Television cable.
B
Telephone wires.
C
Optical fibers.
D
Electrical wires.
3) To listen to a radio station you turn the dial to the
A
optic fiber.
B
amplitude modulator.
C
frequency modulator.
D
carrier wave frequency.
4) AM means
A
any modulation.
B
amplitude modulation.
C
amplitude and frequency modulation.
D
angry modulation.
5) FM means
A
for anyone modulation.
B
frequency modulation.
C
amplitude modulation.
D
amplitude and frequency modulation.
6) Computers can send messages using the _____ system.
A
binary
B
letters and numbers
C
A-E
D
gate
7) When you send a text message, your words and images get converted into _____ before being sent.
A
binary
B
electromagnetic
C
waves
D
fiber optics
8) Which type of signal is better?
A
Digital signal
B
Analog signal
9) Binary is a message-transfer language that uses
A
zeroes, ones and twos
B
A's and B's
C
zeroes and ones
D
gates and ones
10) Why do FM stations sound better than AM stations?
A
They have frequency modulation.
B
They are less affected by electrical noise.
C
They change sound so it's better.
D
They are more affected by electrical noise.
*select an answer for all questions
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