Three Phase Induction Motors 5 H.P., 50Hz, 3-phase, 440 V, induction motors are available for the following r.p.m. Which motor will be the costliest? 1000 rpm 2880 rpm 1440 rpm 730 rpm 1000 rpm 2880 rpm 1440 rpm 730 rpm ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors DOL starting of induction motors is usually restricted to High horsepower motors Variable speed motors High speed motors Low horsepower motors High horsepower motors Variable speed motors High speed motors Low horsepower motors ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors In induction motor, percentage slip depends on Supply frequency Copper losses in motor None of these Supply voltage Supply frequency Copper losses in motor None of these Supply voltage ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The crawling in an induction motor is caused by Harmonics developed in the rotor High loads Low voltage supply Improper design of machine Harmonics developed in the rotor High loads Low voltage supply Improper design of machine ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors In a squirrel cage rotor, the bars are not placed parallel to the shaft but are skewed to have ______ Uniform torque None of the listed here Greater mechanical strength Less rotor losses Uniform torque None of the listed here Greater mechanical strength Less rotor losses ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The power factor of an induction motor under no load conditions will be closer to 0.2 leading Unity 0.2 lagging 0.5 leading 0.2 leading Unity 0.2 lagging 0.5 leading ANSWER DOWNLOAD EXAMIANS APP
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