In an electric machine F2 (rotor mmf) = 920 AT. F1 (stator emf) = 400 AT, alpha = 125° and the resultant air gap flux per pole is 0.107 Wb. Find out permeance per pole.
Note: AT (Ampere Turn) is a unit.1
1.408 × 10-4 Wb/AT
2
8.408 × 10-4 Wb/AT
3
2.480 × 10-4 Wb/AT
4
2.408 × 10-4 Wb/AT