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  • A certain wave is amplitude modulated with two sine waves simuntaneously having modulation indices of 0.4 and 0.3 respectively .The resultant modulation index will be  <div class='qna

A certain wave is amplitude modulated with two sine waves simuntaneously having modulation indices of 0.4 and 0.3 respectively .The resultant modulation index will be  

Option: 1

0.7


Option: 2

0.5


Option: 3

0.12


Option: 4

1.2


Answers (1)

best_answer

As we have learned

Total Modulation Index -

If a carrier wave is modulated by several sine waves.

- wherein

Total Modulated Index

m_{t}= \sqrt{m_{1}^{2}+m_{2}^{2}}+...

 

 If a carrier wave is modulated with several sine wave , than the total modulation index is calculated as m = \sqrt{m _{1}^{2}+m_{2}^{2}+....+m_{n}^{2}}

Here m = \sqrt{(0.3)^2+(0.4)^2}

\sqrt{0.09+0.16}

\sqrt{0.25}= 0.5

 

Posted by

Sanket Gandhi

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