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? 730 rpm 2880 rpm 1440 rpm 1000 rpm 730 rpm 2880 rpm 1440 rpm 1000 rpm ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The no load speed of an induction motor depends on The maximum flux/poles The supply frequency Both supply frequency and number of poles The number of its poles The maximum flux/poles The supply frequency Both supply frequency and number of poles The number of its poles ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors If a 4 pole induction motor has a synchronous speed of 1500 rpm, then supply frequency is _____ 25 Hz 60 Hz None of the listed here 50 Hz 25 Hz 60 Hz None of the listed here 50 Hz ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors In an induction motor, the ratio of rotor cu loss and rotor input is given by 1/S S S/1-S 1-S 1/S S S/1-S 1-S ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors DOL starting of induction motors is usually restricted to Variable speed motors Low horsepower motors High horsepower motors High speed motors Variable speed motors Low horsepower motors High horsepower motors High speed motors ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors An induction motor is so called because its operation depends on Hysteresis Eddy currents Mutual induction Self induction Hysteresis Eddy currents Mutual induction Self induction ANSWER DOWNLOAD EXAMIANS APP
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