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Communication Systems

Q1:

Some possible disadvantages of high level modulation in TV transmitters are
  1. Video monitor has to supply high video voltages upto several hundred volts into highly capacitive loads drawing high current at video frequencies
  2. The grid modulated stage presents a varying load to its driver
  3. The linearity and high video driving power present design problems
Out of above which are true?

A 1 only

B 1 and 2 only

C 1, 2 and 3

D 2 and 3 only

ANS:C - 1, 2 and 3

All these are true.



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