In three-phase induction motors sometimes copper bars are placed deep in the rotor to___________?

Related Mcqs:

In Ns is the synchronous speed and s the slip, then actual running speed of an induction motor will be___________?

A. Ns B. s.N, C. (l-s)Ns D. (Ns-l)s...

The crawling in the induction motor is caused by____________?

A. low voltage supply B. high loads C. harmonics develped in the motor D. improper design of the machine E. none of the above...

A 3-phase induction motor stator delta connected, is carrying full load and one of its fuses blows out. Then the motor_______________?

A. will continue running burning its one phase B. will continue running burning its two phases C. will stop and carry heavy current causing permanent damage to its winding D. will continue running without any harm to the winding...

In a three-phase induction motor_______________?

A. iron losses in stator will be negligible as compared to that in rotor B. iron losses in motor will be neg¬ligible as compared to that in rotor C. iron losses in stator will be less than that in rotor D. iron losses in stator will be more than that in rotor...

In case of a double cage induction motor, the inner cage has__________?

A. high inductance arid low resistance B. low inductance and high resistance C. low inductance and low resistance D. high inductance and high resistance...