Electrical Machines
If Ke is eddy current constant, Kf is form factor, f is supply frequency, Bm maximum flux density in core of transformer, the expression of eddy current loss in transformer, is given by

 KefKf2Bm2.
 Kef2KfBm2.
  Kef2Kf2Bm2.
 Kef2Kf2Bm.

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Electrical Machines
In a step down transformer which one of the following statements is true?

 Number of secondary turns is more than that of primary.
 Secondary power is less than primary power.
 Secondary current is less than primary current.
  Number of secondary turns is less than primary turns.

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