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

stator MMF s (at ns)
rotor MMF r (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