DC Motors
A compensating winding is an auxiliary winding embedded in slots in

None of the listed here
Partly in pole faces, partly in armature
The armature
The pole faces of main poles

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DC Motors
If a D.C. shunt motor is working at full load and if shunt field circuit suddenly opens

This will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses
Motor will come to stop
This will make armature to take heavy current, possibly burning it
Nothing will happen to motor

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