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

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

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

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

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