Three Phase Induction Motors When a 3-phase induction motor is at no load, the slip is ______ Practically zero 0.2 0.5 1 Practically zero 0.2 0.5 1 ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The injected e.m.f. in the rotor of induction motor must have The same frequency as the slip frequency High value for the satisfactory speed control The same phase as the rotor e.m.f. Zero frequency The same frequency as the slip frequency High value for the satisfactory speed control The same phase as the rotor e.m.f. Zero frequency ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The approximate efficiency of a 3-phase , 50 Hz, 4 pole induction motor running at 1350 rpm is ______ None of the listed here 90% 40% 65% None of the listed here 90% 40% 65% ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors Less maintenance troubles are experienced in terms of Squirrel cage induction motor Slip ring induction motor None of the listed here Both squirrel cage and slip ring Squirrel cage induction motor Slip ring induction motor None of the listed here Both squirrel cage and slip ring ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The stator of a three phase induction motor produces _______ magnetic field. Rotating Alternating Steady None of the listed here Rotating Alternating Steady None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors In a squirrel cage induction motor, the number of rotor bars is generally ________ Prime number Even number Equal to stator poles None of the listed here Prime number Even number Equal to stator poles None of the listed here ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS