Three Phase Induction Motors The direction of rotation of field in a 3 phase induction motor depends upon _____ Number of poles Phase sequence of supply voltage Magnitude of supply voltage Supply frequency Number of poles Phase sequence of supply voltage Magnitude of supply voltage Supply frequency ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors In an induction motor, no load the slip is generally Less than 1% 2% 4% 1.5 % Less than 1% 2% 4% 1.5 % ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors Slip rings are usually made of Carbon Aluminium Copper Phospor bronze Carbon Aluminium Copper Phospor bronze ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The efficiency of an induction motor can be expected to be nearly 60 to 90% 99% 80 to 90% 95 to 98 % 60 to 90% 99% 80 to 90% 95 to 98 % ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The number of slip rings on a squirrel cage induction motor is usually None Three Two One None Three Two One ANSWER DOWNLOAD EXAMIANS APP
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