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Q.

An oscillator is producing FM waves of frequency 2 kHz with a variation of 10 kHz. What is the modulating index?

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a

0.67

b

5.0

c

1.5

d

0.20

answer is B.

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Detailed Solution

The formula for modulating index is given by

mf=δvm=Frequency variation Modulating frequency=10×1032×103=5

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