A 220V, 20kW, PF=0,8 (leading) delta connected 50 Hz synchronous motor has a synchronous reactance value of 2,75 S. Core (magnetic) losses are 1kW, electrical losses on armature circuit is 2 kW and the rest of the losses on this machine (mechanical friction and ventilation losses) are 1,5 kW. Find the Is and Ea values of this motor under ful load (nominal load) (20 kW) condition.

A 220V, 20kW, PF=0,8 (leading) delta connected 50 Hz synchronous motor has a synchronous reactance value of 2,75 S. Core (magnetic) losses are 1kW, electrical losses on armature circuit is 2 kW and the rest of the losses on this machine (mechanical friction and ventilation losses) are 1,5 kW. Find the Is and Ea values of this motor under ful load (nominal load) (20 kW) condition.

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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