Answer Posted / abhishek kesarwani

Akshay see the conductor always rotates and its position
varies continuously. we know very well if it stops at any
point then emf will not be produced, so if you simply pay
attention on the square wave then you can find that the
angle is stationary and only amplitude increases and after
the maximum amplitude the amplitude stops varying and angle
increases and the same funda goes on. And the same shall be
aplicable for any other wave forms.
Unlike if you see the sine wave at every point its amplitude
and angle changes like the position of conductor changes.
Hence the output we get is sinusoidal...

Hope it is clear now....

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