[Solved] connected across AC supply?

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Q.	connected across AC supply?
A.	will run at normal speed
B.	will not run
C.	will run at lower speed
D.	burn due to heat produced in the field winding
Answer» D. burn due to heat produced in the field winding
Explanation: in case of parallel field connection, it won’t rotate at all and will start humming and will create vibrations, as a torque produced by positive and negative cycle will cancel out each other. dc motor will be heated up and it may burn.

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