For an amplitude modulated wave, the maximum amplitude is found to be 10 V while minimum amplitude is found to be 2 V. Determine the modulation index `mu`. What would be the value of `mu` if the minimum amplitude is zero?

Options

A.
B.
C.
D.

Explanation

`A_("max") = A_(c ) + A_(m) and A_("min") = A_(c ) - A_(m)`
`therefore " " A_( c) = (""^(A)"max"""^(+A)"min")/(2) = (10+2)/(2) = 6" "V`
`A_( m) = (""^(A)"max"""^(-A)"min")/(2) = (10-2)/(2) = 4" "V`
`therefore " " mu = (A_(m))/(A_( c)) = (4)/(6) = 0.67`
If `A_("min") = 0`, then `A_(m) = A_( c) and mu = 1.`