A series motor runs at 1000rpm taking 90A with 110V. What resistance would be connected in parallel with the field circuit to get 1500rpm speed for delivering same load torque? Armature resistance is 0.0892 and series field resistance is 0.069. Assume magnetic circuit is unsaturated. ANS R=0.0449

A series motor runs at 1000rpm taking 90A with 110V. What resistance would be connected in parallel with the field circuit to get 1500rpm speed for delivering same load torque? Armature resistance is 0.0892 and series field resistance is 0.069. Assume magnetic circuit is unsaturated. ANS R=0.0449

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.

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Kindly please solve what is ask with complete handwritten solution and circuit diagram so that I can clearly understand. Final answer must be in 3-4 decimal places. Thank you very much!!!!

A series motor runs at 1000rpm taking 90A with 110V. What resistance would be
connected in parallel with the field circuit to get 1500rpm speed for delivering same load torque?
Armature resistance is 0.0892 and series field resistance is 0.0692. Assume magnetic circuit is
unsaturated. ANS R=0.04492

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