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Communication Systems - Engineering

Q1:

Some possible functions of AGC in a TV receiver are
  1. To increase gain for weak signals
  2. To decrease gain for strong signals
  3. To change the contrast when we switch from one channel to other
  4. To reduce flutter
Which of the above are correct?

A 1, 2, 3, 4

B 1, 2, 4

C 1, 2, 3

D 2, 3, 4

ANS:B - 1, 2, 4

No answer description is available.