when conductor rotates
in varying magnetic
field the emf will
induced in it and it is
sinusoidal in nature ...?
Why it is not in square
wave and rectangular
wave in nature?

Answer Posted / @vi

Because varying magnetic field is produced using
alternating current which is sinusoidal in nature. So when
the conductor moves through these sinusoidal magnetic flux,
sinusoidal voltage induces in it.

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