Three Phase Induction Motors The injected e.m.f. in the rotor of induction motor must have 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. Zero frequency ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The starting torque of a 3-phase induction motor is _______ supply voltage. Independent of Directly proportional to sqaure of None of the listed here Directly proportional to Independent of Directly proportional to sqaure of None of the listed here Directly proportional to ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The speed of a squirrel-cage induction motor can be controlled by all of the following except Changing winding resistance Changing supply frequency Changing number of poles Reducing supply voltage Changing winding resistance Changing supply frequency Changing number of poles Reducing supply voltage 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 Same Bigger Any of the listed here Smaller Same Bigger Any of the listed here Smaller ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors Less maintenance troubles are experienced in terms of Slip ring induction motor None of the listed here Squirrel cage induction motor Both squirrel cage and slip ring Slip ring induction motor None of the listed here Squirrel cage induction motor Both squirrel cage and slip ring ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors If the rotor slots are made deeper, rotor resistance is ______ Decreased at starting None of the listed here Increased under running conditions Increased at starting Decreased at starting None of the listed here Increased under running conditions Increased at starting ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS