Electrical Machines
Star - delta method of starting of motor is not possible in case of

  high torque motor.
  single phase induction motor.
  high speed motor.
  low horse power motor.

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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.
  are provided in a synchronous motor to make it self starting.
  both (A) and (B).

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Electrical Machines
Which of the following is done in speed control of DC motor by field flux control?

 Any of above.
 Inserting resistance to armature circuit and field circuit.
 Inserting an additional resistance in the armature circuit.
 Inserting an additional resistance in the field circuit.

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