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 25 Hz 50 Hz None of the listed here 60 Hz 25 Hz 50 Hz ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors Very large 3-phase induction motors (greater than 25 HP) are started _____ None of the listed here Direct on line By auto transformer starting Star-delta starting None of the listed here Direct on line By auto transformer starting Star-delta starting ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors In an induction motor if air gap increased 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 Windage losses will be more Bearing friction will reduce Copper loss will reduce ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The rotor of an induction motor runs at Below synchronous speed Above synchronous speed Any of the above Synchronous speed Below synchronous speed Above synchronous speed Any of the above Synchronous speed ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors An induction motor is so called because its operation depends on Hysteresis Mutual induction Self induction Eddy currents Hysteresis Mutual induction Self induction Eddy currents ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The number of slip rings on a squirrel cage induction motor is usually None One Two Three None One Two Three ANSWER DOWNLOAD EXAMIANS APP
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