Three Phase Induction Motors The frame of an induction motor is usually made of Bronze Aluminium Cast iron Silicon steel Bronze Aluminium Cast iron Silicon steel ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors In an induction motor, no load the slip is generally 1.5 % 4% Less than 1% 2% 1.5 % 4% Less than 1% 2% 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 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 Auto transformer starter ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The synchronous speed of a 3-phase induction motor having 20 poles and connected to a 50 Hz source is _____ 1200 rpm 1000 rpm 300 rpm 600 rpm 1200 rpm 1000 rpm 300 rpm 600 rpm ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The good power factor of an induction motor can be achieved if the average flux density in the air gap is Small Large Absent Infinity Small Large Absent Infinity ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The efficiency of an induction motor can be expected to be nearly 80 to 90% 95 to 98 % 60 to 90% 99% 80 to 90% 95 to 98 % 60 to 90% 99% ANSWER DOWNLOAD EXAMIANS APP
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