Radio broadcasting is a familiar example of space multiplexing time multiplexing

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Question
Radio broadcasting is a familiar example of
Options
A. space multiplexing
B. time multiplexing
C. frequency multiplexing
D. none of the above

Correct Answer

frequency multiplexing

Satellite Communication problems

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2. A geostationary satellite is one which
Options
A. hangs motionless in space about 36000 km about Earth
B. travels around the Earth in 24 hours
C. remains stationary above the Earth
D. appears stationary to everybody on Earth

5. Which one of the following statements regarding compandor is FALSE?
Options
A. It compresses the higher-amplitude parts of a signal before modulation and expands them back to normal again after demodulation.
B. It gives preferential treatment to the weaker parts of the signal
C. For weaker signals it gives a poor ratio of signal strength to quantizing error
D. Weaker signals, traverse more quantum steps than they would do otherwise and so quantizing error is reduced.

7. A function having frequency f is to be sampled. The sampling time T should be
Options
A.
B.
C.
D.

8. Two function g₁(t) and g₂(t) with correlation of 6 has average power of 4 and 5 respectively. The power of g₁(t) + g₂(t) is
Options
A. 9
B. 21
C. 3
D. 15

10. The signal defined by the equations f(t) = 0 for t < 0, f(t) = E for 0 ? t ? a and f(t) = 0 for t > a is
Options
A. a step function
B. a pulse function
C. a shifted step function originating at t = a
D. none of the above

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