[Solved] In variable speed motor

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Q.	In variable speed motor
A.	a stronger commutating field is needed at low speed than at high speed
B.	a weaker commutating field is needed at low speed than at high speed
C.	same commutating field is needed at low speed than at high speed
D.	none of the above is correct
Answer» B. a weaker commutating field is needed at low speed than at high speed

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