Q: A. A 440 V, 3-phase, 50 Hz, 4-pole, Y-connected induction motor has a full-load speed of 1425 r.p.m. The rotor has an impedance of (0.4+ j4) 02 per phase and rotor/ stator turn beralio is 0.8. Calculate (1) full-load torque (2) rotor current and (3) full- load rotor Cu loss..

Q: A. A 440 V, 3-phase, 50 Hz, 4-pole, Y-connected induction motor has a full-load speed of 1425 r.p.m. The rotor has an impedance of (0.4+ j4) 02 per phase and rotor/ stator turn beralio is 0.8. Calculate (1) full-load torque (2) rotor current and (3) full- load rotor Cu loss..

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter32: Three-phase Motors

Section: Chapter Questions

Problem 6RQ: Name three factors that determine the torque produced by an induction motor.

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Concept explainers

Three Phase Induction Motor

The induction motor is an electric motor that runs on AC (alternating current) and it is of two type single phase motor that work on single-phase power supply and three-phase motor that work on three-phase power supply.

Question

Q: A. A 440 V, 3-phase, 50 Hz, 4-pole, Y-connected induction motor has a full-load speed
of 1425 r.p.m. The rotor has an impedance of (0.4+j 4) 02 per phase and rotor/
stator turn beralio is 0.8. Calculate (1) full-load torque (2) rotor current and (3) full-
load rotor Cu loss..

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Step 2: Find full load torque and rotor current

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Step 3: Find Full load rotor copper loss

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