Three Phase Induction Motors The torque developed by a 3 phase induction motor least depends on Rotor current Shaft diameter Rotor power factor Rotor emf Rotor current Shaft diameter Rotor power factor Rotor emf ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors When the rotor of a 3-phase induction motor is blocked, the slip is _____ 0.1 0 1 0.5 0.1 0 1 0.5 ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors In an induction motor if air gap increased Windage losses will be more The power factor will be low Bearing friction will reduce Copper loss will reduce Windage losses will be more The power factor will be low Bearing friction will reduce Copper loss will reduce ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The 3- phase induction motor is so designed that the rotor should have ______ under running conditions. High reactance Low resistance Large slip high resistance High reactance Low resistance Large slip high resistance ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors A wound rotor motor is mainly used in applications where ______ High starting torque is required Less costly motor is not required Speed control is required High rotor resistance is required during running High starting torque is required Less costly motor is not required Speed control is required High rotor resistance is required during running ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The cogging of an induction motor can be avoided by Having number of rotor slots more or less than the number of stator slots Auto transformer starter Using DOL starter Proper ventilation Having number of rotor slots more or less than the number of stator slots Auto transformer starter Using DOL starter Proper ventilation ANSWER DOWNLOAD EXAMIANS APP
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