A 100hp, 250 V, 1200 rpm shunt DC motor with an armature resistance of 0.03 Ω and a field resistance of 41.67 Ω. The motor has compensating windings, so armature reaction can be ignored. Mechanical and core losses may be assumed to be negligible for the purposes of this problem. The motor is assumed to be driving a load with a line current of 126 A and an initial speed of 1103 rpm. To simplify the problem, assume that the amount of armature current drawn by the motor remains constant. what is the motor's speed if the field resistance is raised to 50 Ω? can you help me to find N2?

A 100hp, 250 V, 1200 rpm shunt DC motor with an armature resistance of 0.03 Ω and a field resistance of 41.67 Ω. The motor has compensating windings, so armature reaction can be ignored. Mechanical and core losses may be assumed to be negligible for the purposes of this problem. The motor is assumed to be driving a load with a line current of 126 A and an initial speed of 1103 rpm. To simplify the problem, assume that the amount of armature current drawn by the motor remains constant. what is the motor's speed if the field resistance is raised to 50 Ω? can you help me to find N2?

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter32: Two-speed, One-winding (consequent Pole) Motor Controllers

Section: Chapter Questions

Problem 6SQ: Describe the operation of Figure 325 (B) by adding jumper wire A to the original circuit.

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