Communication Systems - Engineering

Q1:

A 200 Hz sound wave is to be transmitted by a 1000 kHz radio wave using frequency modulation. The instantaneous frequency variation will be

A 100 times a second

B 200 times a second

C 400 times a second

D 1000 times a second

ANS:B - 200 times a second

The instantaneous frequency variation is equal to frequency of audio signal.