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A 230-V shunt motor draws 5 A at a no-load speed of 2400 rpm. The shunt- field resistance is 115 0, and the armature resistance is 0.1 1. The motor takes 25 A at full load. Determine (a) the rotational loss, (b) the full-load speed, (c) the speed regulation, (d) the motor efficiency, and (e) the nominal rating of the motor.

A 230-V shunt motor draws 5 A at a no-load speed of 2400 rpm. The shunt- field resistance is 115 0, and the armature resistance is 0.1 1. The motor takes 25 A at full load. Determine (a) the rotational loss, (b) the full-load speed, (c) the speed regulation, (d) the motor efficiency, and (e) the nominal rating of the motor.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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A 230-V shunt motor draws 5 A at a no-load speed of 2400 rpm. The shunt- field resistance is 115 0, and the armature resistance is 0.1 n. The motor takes 25 A at full load. Determine (a) the rotational loss, (b) the full-load speed, (c) the speed regulation, (d) the motor efficiency, and (e) the nominal rating of the motor. Speed regulation at full load = (N no-load-N full load)/ N no-load
Transcribed Image Text:A 230-V shunt motor draws 5 A at a no-load speed of 2400 rpm. The shunt- field resistance is 115 0, and the armature resistance is 0.1 n. The motor takes 25 A at full load. Determine (a) the rotational loss, (b) the full-load speed, (c) the speed regulation, (d) the motor efficiency, and (e) the nominal rating of the motor. Speed regulation at full load = (N no-load-N full load)/ N no-load
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