Repulsion Motor Multiple Choice Questions and Answers

26. The purpose of stator winding in the compensated repulsion motor is to

   A.Provide mechanical balance

   B.Improve power factor and provide better speed regulation

   C.Prevent hunting in the motor

   D.Eliminate armature reaction

27. In repulsion motor, zero torque is developed when

   A.Brush axis is 45⁰ electrical to field axis

   B.Brush axis coincides with the field axis

   C.Brush axis is 90⁰ electrical to field axis

   D.Both (b) and (c)

28. A repulsion motor is equipped with

   A.Slip rings

   B.Commutator

   C.Both (a) and (b)

   D.None of the above

29. A repulsion-start induction-run single-phase motor runs as induction motor only when

   A.Short-circuiter is disconnected

   B.Stator winding is reversed

   C.Brushes are shifted to neutral plane

   D.Commutator segments are short-circuited

30. In a repulsion motor, brushes are connected

   A.To starting winding

   B.To the external supply

   C.To stator winding

   D.Together by a jumper wire

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