Rotation Of Hysteresis Motor Multiple Choice Questions and Answers

46. In a hysteresis motor, the rotor

   A.Has high hysteresis loss

   B.Has high retentivity

   C.Is made of chrome steel

   D.Should have all of the above features

47. The direction of rotation of a hysteresis motor is determined by the

   A.Retentivity of the rotor material

   B.Amount of hysteresis loss

   C.Permeability of rotor material

   D.Position of shaded pole with respect to the main pole

48. In a split-phase motor the ratio of number of turns for starting winding to that for running winding is

   A.Less than one

   B.More than one

   C.One

   D.Two

49. The motor used for the compressors is

   A.D.C. series motor

   B.Shaded pole motor

   C.Capacitor-start capacitor-run motor

   D.Reluctance motor

50. Which of the following motors is used in a situation where load increases with speed

   A.Induction motor

   B.Three-phase series motor

   C.Schrage motor

   D.Hysteresis motor

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