Three Phase Induction Motors The injected e.m.f. in the rotor of induction motor must have 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 Zero frequency ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors Less maintenance troubles are experienced in case of None of these Slip ring induction motor Squirrel cage induction motor Both (A) and (B) None of these Slip ring induction motor Squirrel cage induction motor Both (A) and (B) ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors A wound rotor motor is mainly used in applications where ______ Speed control is required High rotor resistance is required during running High starting torque is required Less costly motor is not required Speed control is required High rotor resistance is required during running High starting torque is required Less costly motor is not required ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors In induction motor, percentage slip depends on None of these Supply voltage Supply frequency Copper losses in motor None of these Supply voltage Supply frequency Copper losses in motor ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors If a 4 pole induction motor has a synchronous speed of 1500 rpm, then supply frequency is _____ 60 Hz 25 Hz None of the listed here 50 Hz 60 Hz 25 Hz None of the listed here 50 Hz ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors Which of the following component is usually fabricated out of silicon steel? Stator core None of these Bearings Shaft Stator core None of these Bearings Shaft ANSWER DOWNLOAD EXAMIANS APP
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