Induction machine: stator MMF and resultant rotor MMF rotate together at ns

stator MMF ℱs (at ns)
rotor MMF ℱr (also at ns)
rotor bars (nm, slip exaggerated)
30
0.20
1.00
1.00
50

      
Per-phase IEEE equivalent circuit — rotor referred to the stator Rc dropped: core + friction losses are carried as a constant rotational loss