A series motor having a resistance of 1 ohm between terminals drives a fan for which the torque varies as the square of the speed. At 220 Volt the set runs at 300 rpm and takes 25 Amp. The speed is to be raised to 400 rpm by increasing the voltage. Find the terminal voltage for the limiting cases when the field is unsaturated (i.e. flux directly proportional to current)

A series motor having a resistance of 1 ohm between terminals drives a fan for which the torque varies as the square of the speed. At 220 Volt the set runs at 300 rpm and takes 25 Amp. The speed is to be raised to 400 rpm by increasing the voltage. Find the terminal voltage for the limiting cases when the field is unsaturated (i.e. flux directly proportional to current)

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter29: Dc Generators

Section: Chapter Questions

Problem 1PA: You are working as an electrician in a large steel manufacturing plant, and you are in the process...

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