A 74.6-kW, three-phase, 440-V (line to line), four-pole, 60-Hz induction motor has the following (per-phase) parameters referred to the stator circuit (see Figure 19.36):
RS = 0.06 ? XS = 0.3 ? Xm = 5 ?
RR = 0.08 ? XR = 0.3 ?
The no-load power input is 3,240 W at a current of 45 A. Determine the line current, input power, developed torque, shaft torque, and efficiency at s = 0.02.
Analysis:
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