A 230 Vd c. shunt motor has an armature resistance of 0.5 and field resistance of 115 2. At no load, the speed is 1200 rp m and the armature current 25 AOn application of rated load, the speed drops to 1120 p.m. Determine the line current and input power when the motor delivers rated lead IL O'M

A 230 Vd c. shunt motor has an armature resistance of 0.5 and field resistance of 115 2. At no load, the speed is 1200 rp m and the armature current 25 AOn application of rated load, the speed drops to 1120 p.m. Determine the line current and input power when the motor delivers rated lead IL O'M

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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Concept explainers

Winding and Constructions

Alternating Current (AC) winding is generally of the 3-phase type due to the inherent advantages of the 3-phase machine. Armature coils must be connected to the yield balance (equivalent in magnitude and 2/3 of the series phase difference of the rod) 3-phase electromotive forces (emf). The armature should be divided into step-bands to start with slots around the perimeter.In the construction of AC machines, the frame is used as an external protective shield to protect it from environmental conditions. The frame also serves as the outer perimeter, allowing the interior to be easily placed. The static state section of the devices is the stator winding attached stator.

Question

A 230 V de shunt motor has an armature resistance of 0.5 and field resistance of 115
22. At no load, the speed is 1200 rpm and the armature current 2,5 A On application
of rated load, the speed drops to 1120 p.m. Determine the line current and input power
when the motor delivers rated load
IL
ain

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