A 130 V, DC shunt motor drives a constant-torque load at 1100 rpm speed. The armature andfield resistances are 0.9 N and 145 N, respectively. The motor draws a line current of 10.7 A atthe given load. Answer the following questions.1- Calculate the resistance that should beadded Rodd 2 to the armature circuit to reducethe speed by 85%.RaddRaddΩ2- Calculate the efficiency of the motor withoutthe added Radd N if the rotational losses isM1Vtequal to 139.1 W.Ea3- Calculate the efficiency of the motor with theadded Radd Nif the rotational losses is equal to139.1 W.%4- Calculate the resistance that must be added to the armature circuit to operate the motor atthe holding condition.RaddU

A 130 V, DC shunt motor drives a constant-torque load at 1100 rpm speed. The armature and field resistances are 0.9 N and 145 N, respectively. The motor draws a line current of 10.7 A at the given load. Answer the following questions. 1- Calculate the resistance that should be added Radd to the armature circuit to reduce the speed by 85%. Radd Radd 2- Calculate the efficiency of the motor without M1 the added Radd N if the rotational losses is Vt equal to 139.1 W. 3- Calculate the efficiency of the motor with the added Radd Nif the rotational losses is equal to 139.1 W.

A 130 V, DC shunt motor drives a constant-torque load at 1100 rpm speed. The armature and field resistances are 0.9 N and 145 N, respectively. The motor draws a line current of 10.7 A at the given load. Answer the following questions. 1- Calculate the resistance that should be added Radd to the armature circuit to reduce the speed by 85%. Radd Radd 2- Calculate the efficiency of the motor without M1 the added Radd N if the rotational losses is Vt equal to 139.1 W. 3- Calculate the efficiency of the motor with the added Radd Nif the rotational losses is equal to 139.1 W.

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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