Three Phase Induction Motors If a 4 pole induction motor has a synchronous speed of 1500 rpm, then supply frequency is _____ 25 Hz None of the listed here 60 Hz 50 Hz 25 Hz None of the listed here 60 Hz 50 Hz ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The power factor of an induction motor under no load conditions will be closer to 0.5 leading Unity 0.2 leading 0.2 lagging 0.5 leading Unity 0.2 leading 0.2 lagging ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors DOL starting of induction motors is usually restricted to High horsepower motors Low horsepower motors High speed motors Variable speed motors High horsepower motors Low horsepower motors High speed motors Variable speed motors ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors When a 3-phase induction motor is at no load, the slip is ______ 0.2 0.5 Practically zero 1 0.2 0.5 Practically zero 1 ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The condition of induction motor at no load resemble those of a transformer whose secondady is _______ Short-circuited Supplying a variable resistive load Open circuited None of the listed here Short-circuited Supplying a variable resistive load Open circuited None of the listed here 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. 15 to 20 % 5% 10 to 15% 30 to 50% 15 to 20 % 5% 10 to 15% 30 to 50% ANSWER DOWNLOAD EXAMIANS APP
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