Electrical Machines
Two mechanically coupled alternators deliver power at 50 Hz and 60 Hz respectively. Highest speed of alternator is

 3600 rpm.
  600 rpm.
 500 rpm.
 3000 rpm.

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

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

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