Three Phase Induction Motors A 3 phase induction motor is ________ Very costly Not easily maintainable A variable speed motor Essentially a constant speed motor Very costly Not easily maintainable A variable speed motor Essentially a constant speed motor ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors Size of a high speed motor as compared to low speed motor for the same HP will be Smaller Bigger Any of the listed here Same Smaller Bigger Any of the listed here Same ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors In a 3 phase induction motor, the rotor speed is _____ the synchronous speed. Equal to Greater than Smaller than None of the listed here Equal to Greater than Smaller than None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The approximate efficiency of a 3-phase , 50 Hz, 4 pole induction motor running at 1350 rpm is ______ 65% 90% None of the listed here 40% 65% 90% None of the listed here 40% 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 winding resistance Changing number of poles Changing supply frequency Reducing supply voltage Changing winding resistance Changing number of poles Changing supply frequency ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The full load slip of a 3-phase induction motor ranges from None of the listed here 20 to 30 % 10 to 20 % 2 to 5 % None of the listed here 20 to 30 % 10 to 20 % 2 to 5 % ANSWER DOWNLOAD EXAMIANS APP
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