To compare and show voltage of AC source in it sinusoidal form

To compare and show voltage http://mywikio.blogspot.com/of AC source in it sinusoidal form

Apparatus:

CRO& AC supply

Procedure:

1. I turned on the oscilloscope and performed the calibration by adjusting the channels.
2. Now I applied AC voltage to check what voltage is coming.
3. I adjusted the voltage screw such that a sinusoidal screw is obtained.
4. Then I calculated trough.
5. The total voltage comes out to be 50mµ.
6. I noted the reading and completed the experiment.