Electrical Machines
During hunting of a synchronous motor

  damper bar develops torque.
  harmonic are developed in the armature circuit.
  negative phase sequence currents are generated.
  field excitation increases.

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

 Secondary power is less than primary power.
 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.

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