Three Phase Induction Motors The induction motor has lagging power factor during Starting only None of the listed here Both starting and operation Operation only Starting only None of the listed here Both starting and operation Operation only ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors DOL starting of induction motors is usually restricted to Variable speed motors Low horsepower motors High speed motors High horsepower motors Variable speed motors Low horsepower motors High speed motors High horsepower motors ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The injected e.m.f. in the rotor of induction motor must have Zero frequency High value for the satisfactory speed control The same phase as the rotor e.m.f. The same frequency as the slip frequency Zero frequency High value for the satisfactory speed control The same phase as the rotor e.m.f. The same frequency as the slip frequency ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The shape of the torque/slip curve of induction motor is Parabola Hyperbola Straight line Rectangular parabola Parabola Hyperbola Straight line Rectangular parabola ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The magnetising current drawn by a 3 phase induction motor is about _______ of full load stator current. 10 to 15% 15 to 20 % 30 to 50% 5% 10 to 15% 15 to 20 % 30 to 50% 5% 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 _____ 50 Hz None of the listed here 60 Hz 25 Hz 50 Hz None of the listed here 60 Hz 25 Hz ANSWER DOWNLOAD EXAMIANS APP
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