Three Phase Induction Motors The approximate efficiency of a 3-phase , 50 Hz, 4 pole induction motor running at 1350 rpm is ______ 40% 90% None of the listed here 65% 40% 90% None of the listed here 65% ANSWER DOWNLOAD EXAMIANS APP
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 1.5 Hz 2.5 Hz 0.05 Hz 5 Hz 1.5 Hz 2.5 Hz 0.05 Hz ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The direction of rotation of field in a 3 phase induction motor depends upon _____ Supply frequency Phase sequence of supply voltage Number of poles Magnitude of supply voltage Supply frequency Phase sequence of supply voltage Number of poles Magnitude of supply voltage ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The rotor of induction motor None of the listed here Always revolves in the direction opposite to stator flux Insufficient data Always revolves in the direction of stator flux None of the listed here Always revolves in the direction opposite to stator flux Insufficient data Always revolves in the direction of stator flux 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 A 3 phase induction motor is running at 2% slip. If the input to rotor is 1000 W, then mechanical power developed by the motor is _______ 980 W 500 W 20 W 200 W 980 W 500 W 20 W 200 W ANSWER DOWNLOAD EXAMIANS APP
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