Find the number of resistance sections and the resistance of each section of a starter for a 3.7 kW, 230 V, dC series motor from the following data:- Starting current varies from 1 to 1.5 times full load current Full load efficiency = 85% Motor circuit resistance 1.4 ohm Assume flux increases by 10% as the current rises from 1 to 1.5 times the rated full load current.

Find the number of resistance sections and the resistance of each section of a starter for a 3.7 kW, 230 V, dC series motor from the following data:- Starting current varies from 1 to 1.5 times full load current Full load efficiency = 85% Motor circuit resistance 1.4 ohm Assume flux increases by 10% as the current rises from 1 to 1.5 times the rated full load current.

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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Motor circuit resistance 1.4 ohm

Assume flux increases by 10% as the current rises from 1 to 1.5 times the rated full load current.

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