Three Phase Induction Motors The injected e.m.f. in the rotor of induction motor must have 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 Zero frequency The same phase as the rotor e.m.f. The same frequency as the slip frequency ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors When the rotor of a 3-phase induction motor is blocked, the slip is _____ 0 1 0.1 0.5 0 1 0.1 0.5 ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The power factor of an induction motor under no load conditions will be closer to Unity 0.2 leading 0.5 leading 0.2 lagging Unity 0.2 leading 0.5 leading 0.2 lagging ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The shaft of induction motor is made of Stiff Hollow Any of the listed here Flexible Stiff Hollow Any of the listed here Flexible ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The advantage of wound rotor motor is that _______ None of the listed here It requires less maintenance It is inexpensive External resistance can be inserted in the rotor circuit None of the listed here It requires less maintenance It is inexpensive External resistance can be inserted in the rotor circuit ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The starting torque of a squirrel cage induction motor is Low Slightly more than full load torque Negligible Same as full load torque Low Slightly more than full load torque Negligible Same as full load torque ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS