Three Phase Induction Motors The frame of an induction motor is usually made of Bronze Aluminium Silicon steel Cast iron Bronze Aluminium Silicon steel Cast iron ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The speed of a squirrel-cage induction motor can be controlled by all of the following except Reducing supply voltage Changing number of poles Changing supply frequency Changing winding resistance Reducing supply voltage Changing number of poles Changing supply frequency Changing winding resistance ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The cogging of an induction motor can be avoided by Auto transformer starter Having number of rotor slots more or less than the number of stator slots Using DOL starter Proper ventilation Auto transformer starter Having number of rotor slots more or less than the number of stator slots Using DOL starter Proper ventilation ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors DOL starting of induction motors is usually restricted to High horsepower motors Low horsepower motors Variable speed motors High speed motors High horsepower motors Low horsepower motors Variable speed motors High speed motors ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors When the rotor of a 3-phase induction motor is blocked, the slip is _____ 0.5 0.1 0 1 0.5 0.1 0 1 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. 10 to 15% 30 to 50% 5% 15 to 20 % 10 to 15% 30 to 50% 5% 15 to 20 % ANSWER DOWNLOAD EXAMIANS APP
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