Page 285 - Basic Electrical Engineering
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Therefore,
i,e.,
If we calculate the RMS value for half cycle, it can be seen that we will get
the same value by calculating as
Average value
Average value of a sinusoidally varying quantity over one cycle is zero
because for the first half cycle current flows in the positive direction and for
the second half cycle same current flows in the negative direction, i.e., in the
opposite direction.
Average value has to be calculated by considering one-half cycle as
