X.PROBLEM: (Show your solution) 1. A 550-volt long shunt compound motor has an armature resistance of 0.815 ohm and a series field resistance of 0.15-ohm. The full load speed is 1900 rpm when the armature current is 22-Amp. a) At what speed will the motor operate at no load if the armature current drops to 3-amp with corresponding drop in flux to 88 % of the full load value. Assume a brush drop of 5-volts at full load and 2-volt at no load b) Calculate the percent speed regulation of the motor.

X.PROBLEM: (Show your solution) 1. A 550-volt long shunt compound motor has an armature resistance of 0.815 ohm and a series field resistance of 0.15-ohm. The full load speed is 1900 rpm when the armature current is 22-Amp. a) At what speed will the motor operate at no load if the armature current drops to 3-amp with corresponding drop in flux to 88 % of the full load value. Assume a brush drop of 5-volts at full load and 2-volt at no load b) Calculate the percent speed regulation of the motor.

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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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

X.PROBLEM: (Show your solution)
1. A 550-volt long shunt compound motor has an armature resistance of 0.815 ohm
and a series field resistance of 0.15-ohm. The full load speed is 1900 rpm when
the armature current is 22-Amp. a) At what speed will the motor operate at no
load if the armature current drops to 3-amp with corresponding drop in flux to
88 % of the full load value. Assume a brush drop of 5-volts at full load and 2-volt
at no load b) Calculate the percent speed regulation of the motor.
V OR SERVATION.

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