Three Phase Induction Motors If the air gap between the rotor and stator of a 3-phase induction motor is increased, then_______ None of the listed here Leakage reactances are decreased No load current is decreased Leakage reactances are increased None of the listed here Leakage reactances are decreased No load current is decreased Leakage reactances are increased 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 (1+S) × rotor input (S-1) × rotor input S × rotor input (1-S) × rotor input (1+S) × rotor input (S-1) × rotor input S × rotor input 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/1-S 1-S S 1/S S/1-S 1-S S ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors 5 H.P., 50Hz, 3-phase, 440 V, induction motors are available for the following r.p.m. Which motor will be the costliest? 730 rpm 1000 rpm 2880 rpm 1440 rpm 730 rpm 1000 rpm 2880 rpm 1440 rpm ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors In medium sized induction motor, the slip is generally around 0.04 % 0.4 % 4 % 14% 0.04 % 0.4 % 4 % 14% ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The low power factor of induction motor is due to Rotor leakage reactance The reactive lagging magnetizing current necessary to generate the magnetic flux Stator reactance All of these Rotor leakage reactance The reactive lagging magnetizing current necessary to generate the magnetic flux Stator reactance All of these ANSWER DOWNLOAD EXAMIANS APP
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