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In a DC Generator in Order to Reduce Sparking at Brushes, the Brushes

Question 22

Multiple Choice

In a D.C. generator in order to reduce sparking at brushes, the self-induced e.m.f. in the coil is neutralised by all of the following except


A) interpoles
B) dummy coils
C) compensating winding
D) shifting of axis of brushes

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