Three Phase Induction Motors A 3 phase 440 v, 50 Hz induction motor has 4% slip. The frequency of rotor emf will be 50 Hz 20 Hz 200 Hz 2 Hz 50 Hz 20 Hz 200 Hz 2 Hz ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors Less maintenance troubles are experienced in terms of Slip ring induction motor Squirrel cage induction motor None of the listed here Both squirrel cage and slip ring Slip ring induction motor Squirrel cage induction motor None of the listed here Both squirrel cage and slip ring ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors Very large 3-phase induction motors (greater than 25 HP) are started _____ Direct on line By auto transformer starting None of the listed here Star-delta starting Direct on line By auto transformer starting None of the listed here Star-delta starting ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The rotor of an induction motor runs at Any of the above Synchronous speed Below synchronous speed Above synchronous speed Any of the above Synchronous speed Below synchronous speed Above synchronous speed ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors Insertion of resistance in the rotor of an induction motor to develop a given torque Rotor current remains same Rotor current becomes zero Increases the rotor current Decreases the rotor current Rotor current remains same Rotor current becomes zero Increases the rotor current Decreases the rotor current ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors If any two phases for an induction motor are interchanged The motor will run at reduced speed The motor will burn The motor will run in reverse direction The motor will not run The motor will run at reduced speed The motor will burn The motor will run in reverse direction The motor will not run ANSWER DOWNLOAD EXAMIANS APP