Three Phase Induction Motors The crawling in an induction motor is caused by High loads 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 ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The air gap between stator and rotor of 3-phase induction motor ranges from ______ 1 cm to 2 cm 4 cm to 6 cm 0.4 mm to 4 mm 2 cm to 4 cm 1 cm to 2 cm 4 cm to 6 cm 0.4 mm to 4 mm 2 cm to 4 cm ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors In an induction motor if air gap increased Windage losses will be more Bearing friction will reduce Copper loss will reduce The power factor will be low Windage losses will be more Bearing friction will reduce Copper loss will reduce The power factor will be low ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The 3- phase induction motor is so designed that the rotor should have ______ under running conditions. high resistance Low resistance Large slip High reactance high resistance Low resistance Large slip High reactance ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The low power factor of induction motor is due to All of these The reactive lagging magnetizing current necessary to generate the magnetic flux Stator reactance Rotor leakage reactance All of these The reactive lagging magnetizing current necessary to generate the magnetic flux Stator reactance Rotor leakage reactance ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors If a 3 phase induction motor is running at a slip S, then approximate efficiency of the motor is ______ 1+S 1-S S-1 None of the listed here 1+S 1-S S-1 None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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