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

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

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Electrical Machines
A belt-driven cumulatively-compound dc generator is delivering power to the dc mains. If the Belt snaps then the machine will run as a

 cumulative compounded motor in the same direction
 differentially compounded motor in the same direction
 cumulative compounded motor in opposite direction
 differentially compounded motor in the opposite direction

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