Download Aptitude Crack
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Communication Systems - Engineering

Q1:

The antenna current of an AM transmitter is 8 A. When only the carrier is sent, but it increases to 8.93 A. when the carrier is sinusoidally modulated. The percentage modulation is nearly

A 90%

B 80%

C 75%

D 70%

ANS:D - 70%

@Jeeva.

I believe it is 8.93 = 8*(1+m^2 / 2).
where m is the modulation index.