Electrical Machines
The armature of DC motor is laminated

 to reduce the hysteresis loss.
 to reduce the inductor.
 to reduce the mass.
 to reduce the eddy current loss.

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Electrical Machines
In a loaded DC generator, if the brushes are given a shift from the interpolar axis in the direction of rotation, then the commutation will

 deteriorate with rise in terminal voltage.
 deteriorate with fall of terminal voltage.
 improve with rise in terminal voltage.
 improve with fall of terminal voltage.

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