Electrical Machines
The armature core of the rotor bars of dc motors are laminated

  to provide better flux linkage.
  to reduce hysteresis loss.
  to reduce mechanical losses.
  to reduce eddy current loss.

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Electrical Machines
No load primary current in a transformer

 leads the applied voltage by exactly 90Â&
 lags behind applied voltage somewhat less than 90Ã
 leads the applied voltage somewhat less than 90Ã&
 lags behind applied voltage by exactly 90Â&am

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