2 A Triac control of a three-phase, 30 kW, 400 V, 50 Hz, six-pole, star- connected squirrel-cage induction motor such that it operates at a full load efficiency of 0.85 p.u. and power factor 0.8 lagging. Calculate the average and rms current rating and maximum voltage rating required of the triacs.

2 A Triac control of a three-phase, 30 kW, 400 V, 50 Hz, six-pole, star- connected squirrel-cage induction motor such that it operates at a full load efficiency of 0.85 p.u. and power factor 0.8 lagging. Calculate the average and rms current rating and maximum voltage rating required of the triacs.

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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Question

i need the answer quickly

2 A Triac control of a three-phase, 30 kW, 400 V, 50 Hz, six-pole, star-
connected squirrel-cage induction motor such that it operates at a full load
efficiency of 0.85 p.u. and power factor 0.8 lagging. Calculate the average
and rms current rating and maximum voltage rating required of the triacs.
[Ans : 32 A, 45 A, 326 V]

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