Three Phase Induction Motors The efficiency of an induction motor can be expected to be nearly 95 to 98 % 99% 60 to 90% 80 to 90% 95 to 98 % 99% 60 to 90% 80 to 90% ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The crawling in an induction motor is caused by Low voltage supply Improper design of machine Harmonics developed in the rotor High loads Low voltage supply Improper design of machine Harmonics developed in the rotor High loads ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors In an induction motor, the ratio of rotor cu loss and rotor input is given by 1/S S S/1-S 1-S 1/S S S/1-S 1-S ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors If an induction motor is running at slip S, then rotor output is ______ (1+S) × rotor input S × rotor input (S-1) × rotor input (1-S) × rotor input (1+S) × rotor input S × rotor input (S-1) × rotor input (1-S) × rotor input ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors A 3 phase 440 v, 50 Hz induction motor has 4% slip. The frequency of rotor emf will be 2 Hz 200 Hz 20 Hz 50 Hz 2 Hz 200 Hz 20 Hz 50 Hz ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The complete circle diagram of induction motor can be drawn with the help of data found from All of these Stator resistance test No-load test Blocked rotor test All of these Stator resistance test No-load test Blocked rotor test ANSWER DOWNLOAD EXAMIANS APP
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