A two-winding transformer is rated at 60-kVA, 240/1200-V, 60-Hz. When operated as a conventional two-winding transformer at rated load, 0.8 power factor, its efficiency is 0.96. This transformer is to be used as a 1440/1200-V step-down autotransformer in a power distribution system. (a) Calculate the primary currents I₁ and I2, and the secondary current I of the autotransformer. (b) Assuming that the transformer is ideal, find the transformer kVA rating when used as an autotransformer. (c) Find the total transformer loss and the efficiency with the kVA loading of part (a) and 08 power factor

A two-winding transformer is rated at 60-kVA, 240/1200-V, 60-Hz. When operated as a conventional two-winding transformer at rated load, 0.8 power factor, its efficiency is 0.96. This transformer is to be used as a 1440/1200-V step-down autotransformer in a power distribution system. (a) Calculate the primary currents I₁ and I2, and the secondary current I of the autotransformer. (b) Assuming that the transformer is ideal, find the transformer kVA rating when used as an autotransformer. (c) Find the total transformer loss and the efficiency with the kVA loading of part (a) and 08 power factor

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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Full calculation with any assumption needed. All sub questions please as it is all related.