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
Three Phase Induction Motors The direction of rotation of field in a 3 phase induction motor depends upon _____ Phase sequence of supply voltage Number of poles Magnitude of supply voltage Supply frequency Phase sequence of supply voltage Number of poles Magnitude of supply voltage Supply frequency ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The induction motor has lagging power factor during Both starting and operation Starting only None of the listed here Operation only Both starting and operation Starting only None of the listed here Operation only 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. 30 to 50% 10 to 15% 15 to 20 % 5% 30 to 50% 10 to 15% 15 to 20 % 5% ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors 3-phase wound rotor morors are also called _____ motors. Commutator Series Slip ring Synchronous Commutator Series Slip ring Synchronous ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors A 3 phase induction motor is running at 2% slip. If the input to rotor is 1000 W, then mechanical power developed by the motor is _______ 500 W 200 W 20 W 980 W 500 W 200 W 20 W 980 W ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS