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Communication Systems - Engineering

Q1:

An FM signal with a deviation is passes through the mixer, and has its frequency reduced five fold. The deviation in the output of the mixer is

A Δ

B 5Δ

C Δ/5

D indeterminant

E

ANS:A - Δ

Δf (frequency deviation) is independent of fm , Δf depends only upon amplitude of message signal. Δf = kf.Am .