A DC separately excited motor drives a centrifugal pump at a speed of 1400 rpm when the terminal voltage and linecurrents are 205 V and 51 A, respectively. The armature and field resistances are 0.5 N and 1002, respectively.1- Calculate the resistance that should be added Radd N to thearmature circuit to reduce the speed to 700 rpm.RaddΩ2- Design a starting resistance for a maximum starting current of122.4 A in the armature circuit.Radd4- Calculate the resistance that must be added to the armaturecircuit to operate the motor at the holding condition.RaddΩ|3|

The working of the separately excited DC motor is similar to that of the shunt motor when the flux…

A DC separately excited motor drives a centrifugal pump at a speed of 1400 rpm when the terminal voltage and line currents are 205 V and 51 A, respectively. The armature and field resistances are 0.5 N and 100N, respectively. 1- Calculate the resistance that should be added Radd 2 to the armature circuit to reduce the speed to 700 rpm. Radd Ω 2- Design a starting resistance for a maximum starting current of 122.4 A in the armature circuit. Radd = 4- Calculate the resistance that must be added to the armature circuit to operate the motor at the holding condition. Radd =

A DC separately excited motor drives a centrifugal pump at a speed of 1400 rpm when the terminal voltage and line currents are 205 V and 51 A, respectively. The armature and field resistances are 0.5 N and 100N, respectively. 1- Calculate the resistance that should be added Radd 2 to the armature circuit to reduce the speed to 700 rpm. Radd Ω 2- Design a starting resistance for a maximum starting current of 122.4 A in the armature circuit. Radd = 4- Calculate the resistance that must be added to the armature circuit to operate the motor at the holding condition. Radd =

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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