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Communication Systems

Q1:

Assertion (A): A composite video signal has synchronising pulses. Reason (R): It is necessary to synchronise the scanning process in the transmitter and receiver.

A Both A and R are correct and R is correct explanation of A

B Both A and R are correct but R is not correct explanation of A

C A is correct but R is wrong

D A is wrong but R is correct

ANS:A - Both A and R are correct and R is correct explanation of A

Synchronisation of scanning process at transmitter and receiver is necessary for proper reproduction at TV receiver. For this purpose synchronising pulses are sent as a part of video signal.



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