Electrical Machines
If the frequency of input voltage of a transformer is increased keeping the magnitude of voltage unchanged, then

 Ph will increase but Pe will decrease
 Pe will increase but Ph will decrease
 Ph will decrease but Pe will remain same
 both hysteresis loss(Ph) and eddy current loss(Pe) will increase

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

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

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