Three Phase Induction Motors If the air gap between the rotor and stator of a 3-phase induction motor is increased, then_______ None of the listed here Leakage reactances are increased Leakage reactances are decreased No load current is decreased None of the listed here Leakage reactances are increased Leakage reactances are decreased No load current is decreased ANSWER DOWNLOAD EXAMIANS APP
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? 2880 rpm 1000 rpm 1440 rpm 730 rpm 2880 rpm 1000 rpm 1440 rpm 730 rpm ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors DOL starting of induction motors is usually restricted to Low horsepower motors Variable speed motors High horsepower motors High speed motors Low horsepower motors Variable speed motors High horsepower motors High speed motors ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors In a squirrel cage induction motor, the number of stator slots is _______ rotor slots. Either more or less than the number of Always eqaul to the number of Always greater than the number of Always less than the number of Either more or less than the number of Always eqaul to the number of Always greater than the number of Always less than the number of 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 Changing winding resistance Changing supply frequency Reducing supply voltage Changing number of poles Changing winding resistance Changing supply frequency Reducing supply voltage Changing number of poles ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The cogging of an induction motor can be avoided by Using DOL starter Having number of rotor slots more or less than the number of stator slots Proper ventilation Auto transformer starter Using DOL starter Having number of rotor slots more or less than the number of stator slots Proper ventilation Auto transformer starter ANSWER DOWNLOAD EXAMIANS APP
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