Answer:
Proof is as follows
Proof:
Given that ,
<u>for any function f with period T, RMS is given by</u>
<u /><u />
In our case, function is
Now open the square term as follows
Rearranging terms
You can see that
- second term is square of RMS value of Vac
- Third terms is average of VdcVac and given is that average of
so
So it has been proved that given expression for root mean square (RMS) is valid