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A carrier sim...

Question

A carrier simultaneously modulated by two sine waves having modulation indices of 0.3 and 0.4.The total modulation index will be:

A

0.1

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B

0.5

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C

0.7

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D

0.35

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Solution

The correct option is B $0.5$
$m_{1}$ =0.3, $m_{2}$ =0.4
Resultant modulation Index= $\sqrt{{m_{1}}^{2} + {m_{2}}^{2}}$
= $\sqrt{{(0.3)}^{2} + {(0..4)}^{2}}$
$= 0.5$

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