Three Phase Induction Motor MCQ Question & Answer

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11. In an induction motor, if the air gap is increased





12. The rotor slots are slightly skewed in the squirrel cage induction motor to




13. The principle of operation of a 3-phase induction motor is almost similar to a





14. Stator flux induces emf in the rotor bar





15. The direction of rotation of a 3-phase induction motor can be reversed by





16. The rotor of an induction motor never runs at synchronous speed, because then the relative speed between the rotating flux and rotor will be





17. A three-phase 6 pole, 50 Hz, the induction motor runs at 5% slip. What is the speed of the motor?





18. In the case of an induction motor the leakage, flux is more in comparison to that of a transformer. This is due to





19. In an induction motor under running conditions, the rotor reactance per phase is _______its standstill phase reactance.?





20. In an induction motor if the flux density is reduced to one-half of its normal value then the torque will





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