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A separately excited DC motor delivers 10 HP at 1,000 rpm, while producing an induced armature voltage of 200 Volts. The m armature circuit is powered by a DC source V₁ = 220 V. The field windings are powered from a separate DC source VF = 100 V the total field resistance RF = 110 2. You may assume that the rotational losses of this motor are negligable. Calculate the mot overall efficiency in percent.

A separately excited DC motor delivers 10 HP at 1,000 rpm, while producing an induced armature voltage of 200 Volts. The m armature circuit is powered by a DC source V₁ = 220 V. The field windings are powered from a separate DC source VF = 100 V the total field resistance RF = 110 2. You may assume that the rotational losses of this motor are negligable. Calculate the mot overall efficiency in percent.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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A separately excited DC motor delivers 10 HP at 1,000 rpm, while producing an induced armature voltage of 200 Volts. The motor's armature circuit is powered by a DC source V₁ = 220 V. The field windings are powered from a separate DC source VF = 100 V, and the total field resistance RF = 110 Q. You may assume that the rotational losses of this motor are negligable. Calculate the motor's overall efficiency in percent.
Transcribed Image Text:A separately excited DC motor delivers 10 HP at 1,000 rpm, while producing an induced armature voltage of 200 Volts. The motor's armature circuit is powered by a DC source V₁ = 220 V. The field windings are powered from a separate DC source VF = 100 V, and the total field resistance RF = 110 Q. You may assume that the rotational losses of this motor are negligable. Calculate the motor's overall efficiency in percent.
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