M

Mr. Dubey • 52.30K Points
Coach 

Q. A 220V DC series motor is taking a current of 40A. Resistance of armature is 0.5Ω and series field is 0.25Ω. What is the back emf?

(A) 190v
(B) 210v
(C) 170v
(D) none of the above
Correct : Option (A)

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