In no-load mode a single phase two windings power transformer draws apparent power S10=100VA at power factor of cos@10=0.4. At a certain load, this machine absorbs apparent power of S,-350VA at power factor coso,-0.8. In this mode, transformer operates with total amount of its copper power losses of 4pcur+4pcuz=30W. Find: a) The amount of the iron power losses at this load - 4pIr =? b) Transformer efficiency at this load -n=?

In no-load mode a single phase two windings power transformer draws apparent power S10=100VA at power factor of cos@10=0.4. At a certain load, this machine absorbs apparent power of S,-350VA at power factor coso,-0.8. In this mode, transformer operates with total amount of its copper power losses of 4pcur+4pcuz=30W. Find: a) The amount of the iron power losses at this load - 4pIr =? b) Transformer efficiency at this load -n=?

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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