A 440-V, 3-φ 50-Hz, 4 poles, 37.3 kW, Y-connected induction
motor has the following parameters:
R1= 0.1 Ω, X1 = 0.4 Ω , R2′ = 0.15 Ω , X2′ = 0.44 Ω
Motor has stator core loss of 1250 W and rotational loss of
1000 W. It draws a no-load line current of 20 A at a p.f. of 0.09
(lag). When motor operates at a slip of 3%, calculate
a. input line current and p.f. [57.4@29°A, 0.875 lag]
b....