Three Phase Induction Motors If a 4 pole induction motor has a synchronous speed of 1500 rpm, then supply frequency is _____ None of the listed here 60 Hz 50 Hz 25 Hz None of the listed here 60 Hz 50 Hz 25 Hz ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors A high starting torque can be obtained in a 3phase induction motor by _______ Decreasing rotor resistance Increasing rotor reactance None of the listed here Increasing rotor resistance Decreasing rotor resistance Increasing rotor reactance None of the listed here Increasing rotor resistance ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The rotor of an induction motor runs at Above synchronous speed Below synchronous speed Synchronous speed Any of the above Above synchronous speed Below synchronous speed Synchronous speed Any of the above ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The no load speed of an induction motor depends on The supply frequency The maximum flux/poles The number of its poles Both supply frequency and number of poles The supply frequency The maximum flux/poles The number of its poles Both supply frequency and number of poles ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors If the rotor slots are made deeper, rotor resistance is ______ None of the listed here Decreased at starting Increased at starting Increased under running conditions None of the listed here Decreased at starting Increased at starting Increased under running conditions 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 1-S S S/1-S 1/S 1-S S S/1-S ANSWER DOWNLOAD EXAMIANS APP
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