RMS Voltage Graphical Method

  

While the technique for count is the same for both parts of an AC waveform, for this case we will consider just the positive half cycle. The compelling or rms estimation of a waveform can be found with a sensible measure of precision by taking similarly separated prompt values along the waveform.

The positive portion of the waveform is isolated up into any number of "n" equivalent bits or mid-ordinates and the more mid-ordinates that are drawn along the waveform, the more exact will be the last outcome. The width of each mid-ordinate will in this manner be no degrees and the stature of each mid-ordinate will be equivalent to the immediate estimation of the waveform around then along the x-hub of the waveform