Electrical Machines
In a DC generator the actual flux distribution depends upon

  clearance between tips of the adjacent pole shoes.
  all of above.
 size of air gap.
  shape of the pole shoe.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Cogging of induction motor occurs at

 high voltage and when stator and rotor poles are equal.
 low voltage and when stator and rotor poles are not equal.
 low voltage and when stator and rotor poles are equal.
 high voltage and when stator and rotor poles are not equal.

ANSWER DOWNLOAD EXAMIANS APP