Electrical Machines
No load primary current in a transformer

 lags behind applied voltage by exactly 90Â&am
 leads the applied voltage somewhat less than 90Ã&
 lags behind applied voltage somewhat less than 90Ã
 leads the applied voltage by exactly 90Â&

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The damper windings also called the squirrel cage windings or damper grids

  are provided in a synchronous motor to make it self starting.
  are provided on the stator for improving power factor.
  both (A) and (B).
  consists of short-circuited copper bars embedded in the field pole faces.

ANSWER DOWNLOAD EXAMIANS APP