ELECTRICAL MACHINES QUIZ

  Stepper motor.

  Synchronous motor.

  DC differential compound motor.

  Slip ring induction motor.

 1/3, 1/√3

 1/√3, 1/3

 1/3, 1/3

 1/√3, 1/√3

 improve the power factor

 reduce hunting

All of these

 improve starting torque

 The speed of motor will be reduced.

  The motor will attain dangerously high speed.

 The armature current will reduce.

 DC Shunt Motor

  synchronous motor.

  repulsion motor type starting.

  transformer with short-circuited secondary.

  capacitor run IM.

 compensate for the decrease in speed due to increase of load.

  neutralize voltage induced in coil due to fluctuation of l

 reduce eddy current losses by providing local short circuits.

None of these

 DC series motor.

 DC Shunt motor.

 Synchronous motor.

 DC compound motor.

 Any of the above.

 Connecting an additional resistance in stator circuit.

 Connecting an additional resistance in the field circuit.

 Connecting an additional resistance in the armature circuit.

 both A and B.

None of these

 induction process only.

 conduction process only.

  to a DC source.

 to an AC source.

 in reverse.

 to earth.