Three Phase Induction Motors The starting torque of an induction motor is maximum when rotor resistance per phase is _____ rotor reactance / phase. Four times Two times Equal to None of the listed here Four times Two times Equal to None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors An induction motor is preferred to a dc motor because it _______ Provides high starting torque Has simple and rugged construction None of the listed here Provides fine speed control Provides high starting torque Has simple and rugged construction None of the listed here Provides fine speed control ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The cogging of an induction motor can be avoided by Auto transformer starter Using DOL starter Having number of rotor slots more or less than the number of stator slots Proper ventilation Auto transformer starter Using DOL starter Having number of rotor slots more or less than the number of stator slots Proper ventilation ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The magnetising current drawn by a 3 phase induction motor is about _______ of full load stator current. 30 to 50% 5% 15 to 20 % 10 to 15% 30 to 50% 5% 15 to 20 % 10 to 15% ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors In an induction motor, the ratio of rotor cu loss and rotor input is given by S S/1-S 1/S 1-S S S/1-S 1/S 1-S ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors In a double squirrel cage induction motor, the outer cage winding has _______ High resistance High inductance None of the listed here Low resistance High resistance High inductance None of the listed here Low resistance ANSWER DOWNLOAD EXAMIANS APP
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