Increase in length of air gap in an induction motor causes
All of the above
Increase in length of air gap in an induction motor causes Decrease in power factor, Decrease in pulsation losses and Increase the ampere turns required to produce same flux density in the air gap.
The starting torque of a 3-phase slip ring induction motor can be increased by connecting an external resistance in the
An induction motor can run at synchronous speed when