question_answer 7)

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

Answer:

i.e.                   ?(i)                 i.e.                      ?(ii) Adding (i) and (ii), we get i.e. so using (i), we get i.e. Then If theni.e. Then