1. The problem statement, all variables and given/known data In the given fig. we have to find average value of the voltage wave . So , for that we should take limits from 0 to pi/2.!! But in solution it is taken as pi/2 to 3pi/2..! I did'nt get this..why so??? 2. Relevant equations average value of voltage = 1/pi limit integral Vmcos(theta)dtheta 3. The attempt at a solution I am finding the average value by taking the limits fro 0 to pi/2..!!