40) The effect of increasing the length of air gap in an induction motor will be to increase the

41) In a 3 phase induction motor, the relative speed of stator flux with respect to _____ is zero.

42) A 3-phase, 4-pole, 50 Hz induction motor runs at a speed of 1440 R.P.M. The rotating field produced by the rotor rotates at a speed of _____ R.P.M. with respect to the rotor.

43) in a 3-phase induction motor, the rotor field rotates at synchronous speed with respect to

44) Irrespective of the supply frequency, the torque developed by a SCIM is the same when ever _____ is the same.