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>>Fundamentals of Oscillations and Periodic Motion
>> $An oscillator is producing FM waves of f$

Question

An oscillator is producing FM waves of frequency 2kHz with avariation of 10kHz. The modulating index=?

A

0.20

B

5.0

C

0.67

D

1.5

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Updated on : 2022-09-05

Solution

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Correct option is B)

Modulation Index , $m_{f} = \frac{Maximum frequency deviation}{Modulating frequency}$
$\Rightarrow m_{f} = \frac{1 0 k H z}{2 k H z}$
$\Rightarrow m_{f} = 5$

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