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Communication Systems - Engineering

Q1:

Consider the following features of monochrome TV
  1. Number of lines per picture 625
  2. Interlace ratio 2 : 1
  3. Aspect ratio 4 : 3
  4. Channel bandwidth 8 MHz
As regards CCIR system B, which of the above are correct?

A 1, 2, 3, 4

B 1, 2, 3

C 1, 2, 4

D 2, 3, 4

ANS:B - 1, 2, 3

Channel bandwidth is not 8 MHz.