A shunt motor supplied at 250 V, runs at 900 rpm and the armature curr – McqOptions

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1.	A shunt motor supplied at 250 V, runs at 900 rpm and the armature current drawn is 30 A. The resistance of the armature circuit is 0.4 Ω. The resistance required in series with the armature to reduce the speed to 600 rpm when the armature current is 20 A will be
A.	3.17 Ω
B.	2.17 Ω
C.	5.17 Ω
D.	4.17 Ω
Answer» E.

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