A separately excited DC motor has an armature resistance is R= 0.2 0. Mechanical losses =400 watt. Full load input current=25 A. The field resistance is adjustable and the field voltage is 200 V. The magnetization curve of the motor at n=1500 rpm, is given in the following table : I (A) :0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 E. (V): 0 60 120 180 200 225 240 252 256 (a) the no load speed of the motor when the field resistance is set to 142.8 n while the terminal voltage is set to 200 V (b) the full load speed of the motor when Rf is set to 142.8 2 while the terminal voltage is 200 V (c) the efficiency of the motor at full load at condition (b) (d) the load torque and the load torque at condition (b) (e) if the supply voltage (VT) the motor is set to 250V. what will be the value of the field racistance to make this motor ns at 2 000 rnm at fulI1 load

A separately excited DC motor has an armature resistance is R= 0.2 0. Mechanical losses =400 watt. Full load input current=25 A. The field resistance is adjustable and the field voltage is 200 V. The magnetization curve of the motor at n=1500 rpm, is given in the following table : I (A) :0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 E. (V): 0 60 120 180 200 225 240 252 256 (a) the no load speed of the motor when the field resistance is set to 142.8 n while the terminal voltage is set to 200 V (b) the full load speed of the motor when Rf is set to 142.8 2 while the terminal voltage is 200 V (c) the efficiency of the motor at full load at condition (b) (d) the load torque and the load torque at condition (b) (e) if the supply voltage (VT) the motor is set to 250V. what will be the value of the field racistance to make this motor ns at 2 000 rnm at fulI1 load

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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