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A 100 hp, 1750 rpm, d.c. shunt motor has an armature inductance of 1.15 mH, a resistance of 0.0155 2 and an armature voltage constant of 1.3V.s/rad. The motor is operated from a three-phase half-wave controlled-rectifier at rated armature current of 35 A. Find the firing angle a, assuming that the supply voltage is 400 V and the motor speed is 1750 rpm. Consider the thyristors to have a forward voltage drop of 1.5 Volt and assume continuous conduction.

A 100 hp, 1750 rpm, d.c. shunt motor has an armature inductance of 1.15 mH, a resistance of 0.0155 2 and an armature voltage constant of 1.3V.s/rad. The motor is operated from a three-phase half-wave controlled-rectifier at rated armature current of 35 A. Find the firing angle a, assuming that the supply voltage is 400 V and the motor speed is 1750 rpm. Consider the thyristors to have a forward voltage drop of 1.5 Volt and assume continuous conduction.

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
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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A 100 hp, 1750 rpm, d.c. shunt motor has an armature inductance of 1.15 mH, a resistance of 0.0155 2 and an armature voltage constant of 1.3V.s/rad. The motor is operated from a three-phase half-wave controlled-rectifier at rated armature current of 35 A. Find the firing angle a, assuming that the supply voltage is 400 V and the motor speed is 1750 rpm. Consider the thyristors to have a forward voltage drop of 1.5 Volt and assume continuous conduction.
Transcribed Image Text:A 100 hp, 1750 rpm, d.c. shunt motor has an armature inductance of 1.15 mH, a resistance of 0.0155 2 and an armature voltage constant of 1.3V.s/rad. The motor is operated from a three-phase half-wave controlled-rectifier at rated armature current of 35 A. Find the firing angle a, assuming that the supply voltage is 400 V and the motor speed is 1750 rpm. Consider the thyristors to have a forward voltage drop of 1.5 Volt and assume continuous conduction.
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