A 125-kW, 250-V, 1800-rev/min, cumulative compound DC Generator has the following winding resistances: r, = 0.0250 r = 0.0102 r, = 302 The machine is long-shunt connected. Its stray-power loss at rated voltage and 1800 rev/min is 5000 W. When operated at rated speed, load, and terminal voltage, the shunt-field current is 5A. Find the efficiency and input horsepower requirements under these conditions.

A 125-kW, 250-V, 1800-rev/min, cumulative compound DC Generator has the following winding resistances: r, = 0.0250 r = 0.0102 r, = 302 The machine is long-shunt connected. Its stray-power loss at rated voltage and 1800 rev/min is 5000 W. When operated at rated speed, load, and terminal voltage, the shunt-field current is 5A. Find the efficiency and input horsepower requirements under these conditions.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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