Three Phase Induction Motors The frequency of rotor current in a 6-pole , 50 Hz, 3-phase induction motor running at 950 rpm is 2.5 Hz 0.05 Hz 1.5 Hz 5 Hz 2.5 Hz 0.05 Hz 1.5 Hz 5 Hz ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors When a 3-phase induction motor is at no load, the slip is ______ 0.5 1 Practically zero 0.2 0.5 1 Practically zero 0.2 ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors Size of a high speed motor as compared to low speed motor for the same HP will be Bigger Any of the listed here Smaller Same Bigger Any of the listed here Smaller Same 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 None of the listed here Short-circuited Open circuited Supplying a variable resistive load None of the listed here Short-circuited Open circuited ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The injected e.m.f. in the rotor of induction motor must have Zero frequency The same phase as the rotor e.m.f. The same frequency as the slip frequency High value for the satisfactory speed control Zero frequency The same phase as the rotor e.m.f. The same frequency as the slip frequency High value for the satisfactory speed control ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The rotor of an induction motor runs at Synchronous speed Any of the above Below synchronous speed Above synchronous speed Synchronous speed Any of the above Below synchronous speed Above synchronous speed ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS