52) The efficiency and power factor of a SCIM increases in proportion to its

53) If the stator voltage and frequency of an induction motor are reduced proportionality, its

54) An induction motor has a shaft circuit current 7 times the full load current and a full load slip of 4 percent. Its line starting is _____ times the full load torque.

55) If stator voltage of a SCIM is reduced to 50 percent of its rated value, torque developed is reduced by _____ percent of its full load value.

56) A SCIM with 36-slot stator has two separate windings: one with 3 coil groups per phase per pole and the other with 2 coil groups per phase per pole. The obtainable two motor speeds would be in the ratio of