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A three-phase, four-pole, 50 Hz induction motor rotates at a full-load speed of 1470 rpm. The EMF measured between the slip-ring terminals when the rotor is not rotating is 200 V. The rotor windings are star connected and has resistance and stand-still reactance per phase of 0.1 Ω and 1.0 Ω. respectively. Then the rotor current on full load is
25 A
15.43 A
22.5 A
11.2 A
22.5 A
Quick Summary: Practice and solve "A three-phase, four-pole, 50 Hz induction motor rotates at a full-load speed of 1470 rpm. The EMF me..." for Electrical - Electric Drives. The correct answer is Option C: 22.5 A. Detailed step-by-step solution, conceptual clarity, and formulas on Examoogle.
Answer:
Option **(c) **