Three Phase Induction Motors If the frequency of 3-phase supply to the stator of a 3-phase induction motor is increased, then synchronous speed ______ Is decreased None of the listed here Is increased Remains unchanged Is decreased None of the listed here Is increased Remains unchanged ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors Less maintenance troubles are experienced in terms of None of the listed here Slip ring induction motor Squirrel cage induction motor Both squirrel cage and slip ring None of the listed here Slip ring induction motor Squirrel cage induction motor Both squirrel cage and slip ring ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The condition of induction motor at no load resemble those of a transformer whose secondady is _______ Supplying a variable resistive load Open circuited Short-circuited None of the listed here Supplying a variable resistive load Open circuited Short-circuited None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors A 3 phase 440 v, 50 Hz induction motor has 4% slip. The frequency of rotor emf will be 200 Hz 20 Hz 2 Hz 50 Hz 200 Hz 20 Hz 2 Hz 50 Hz ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The injected e.m.f. in the rotor of induction motor must have Zero frequency High value for the satisfactory speed control The same frequency as the slip frequency The same phase as the rotor e.m.f. Zero frequency High value for the satisfactory speed control The same frequency as the slip frequency The same phase as the rotor e.m.f. ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors A high starting torque can be obtained in a 3phase induction motor by _______ Increasing rotor resistance Increasing rotor reactance None of the listed here Decreasing rotor resistance Increasing rotor resistance Increasing rotor reactance None of the listed here Decreasing rotor resistance ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS