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Communication Systems - Engineering

Q1:

The percentage saving in power when the carrier and one of the sidebands are suppressed in an AM wave modulated to a depth of 100% will be nearly

A 50%

B 66%

C 75%

D 83%

ANS:D - 83%

Pt= pc(1+m^2/2) so pt = 1.5pc.
Psb= pc m^2/4 so 0.25pc,
Now;
(Pt-psb/pt)*100 that is equal to 83%.