why do we generate sinusoidal ac?can we generate some other
waveforms by alternators?

Answer Posted / prodip das

If we follow the shape of sinusoidal wave, then we can see
every times voltage is changing i.e. voltage is induced
when rate of change of flux is occured.

If it may rectangle , the some times it is required to make
costant flux. But for producing voltage constant flux is
not possible.

So it is impossible to make the shape.

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