SSC JE Electrical Engineering 22 Jan 2018 Morning Paper

Question : 179 of 200

Marks: +1, -0

What will happen if field winding is disconnected accidentally from rotating dc shunt motor?

Solution:

As we know that flux is inversely proportional to number of turns
ie

ϕ ∝1/N

Hence if field winding is disconnected from rotating dc shunt motor, speed will increase drastically

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