Which of the following dc motors has the least reduction in speed from no load to rated load?

Q. Which of the following dc motors has the least reduction in speed from no load to rated load?

A.            Shunt motor with commutating poles

B.            Series motor with commutating poles

C.            Series motor without commutating poles

D.            Compound motor without commutating poles

Answer: Shunt motor with commutating poles

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