1.

If the speed of rotation for a four pole, 220V dc machine is 1 m/s, flux density as 2T having length of bore as 0.1m and radius of 0.5m. The emf induced under pole faces will be ________

A. 0.2 V
B. 0.1 V
C. 0.2*pi V
D. 220 V
Answer» B. 0.1 V


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