A3-phase, y-connected 460-v (line-to-line), 20-kw, 60-hz, 6-pole induction motor has the following parameter values in ω/phase referred to the stator:
r1 = 0.271 ω; x1 = 1.12 ω; xm = 23.10 ω; r2 ‘ = 0.188 ω; x2 ‘ = 1.91 ω.
the total friction, windage, and core losses may be assumed to be constant at 320 w, independent of load. the slip s = 1.6 percent (s = 0.016).
(a) draw the single-phase equivalent circuit.
(b) determine the stator current i1.
(c) determine the output power pout.
(d) determine the output torque tout