Relevant Competitive Tests:
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 speedCorrect Answer
C. same commutating field is needed at low speed than at high speed
D. none of the above is correct
Correct Option: B. a weaker commutating field is needed at low speed than at high speed
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