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A wave is modulated by two sin waves having modulation indices of 0.3 and 0.5. Find the total modulation index? a) 0.1 b) 0.7 c) 0.58 d) 0.35

Answer»

c) 0.58 

Given that m1 = 0.3 and m2 = 0.5. Total modulation index will be equal to \(\sqrt{m_1^2+m_2^2}\).

By substituting values we have \((\sqrt{0.3^2+0.5^2)}\) which is equal to 0.58.



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