Three Phase Induction Motors The frequency of rotor current in a 6-pole , 50 Hz, 3-phase induction motor running at 950 rpm is 5 Hz 0.05 Hz 1.5 Hz 2.5 Hz 5 Hz 0.05 Hz 1.5 Hz 2.5 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 S S/1-S 1-S 1/S S S/1-S 1-S 1/S ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The efficiency of an induction motor can be expected to be nearly 95 to 98 % 80 to 90% 60 to 90% 99% 95 to 98 % 80 to 90% 60 to 90% 99% ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The condition of induction motor at no load resemble those of a transformer whose secondady is _______ Supplying a variable resistive load Short-circuited None of the listed here Open circuited Supplying a variable resistive load Short-circuited None of the listed here Open circuited ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The low power factor of induction motor is due to The reactive lagging magnetizing current necessary to generate the magnetic flux Stator reactance Rotor leakage reactance All of these The reactive lagging magnetizing current necessary to generate the magnetic flux Stator reactance Rotor leakage reactance All of these ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors DOL starting of induction motors is usually restricted to Variable speed motors High speed motors High horsepower motors Low horsepower motors Variable speed motors High speed motors High horsepower motors Low horsepower motors ANSWER DOWNLOAD EXAMIANS APP
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