Electrical Machines
What does the use the of height flux density value in transformer design lead to?

 Reduced iron loss.
 Increase in weight/KVA.
  Decrease in weight/KVA.
 Reduced copper loss.

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Electrical Machines
In a DC generator, the armature reaction results in

  magnetization of inter poles.
 magnetization of leading and demagnetization of trailing pole tip.
 demagnetization of centers of poles.
  demagnetization of leading & magnetization of trailing pole tip.

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