4.27 A 10-kVA, 4160/240-V, single-phase transformer has a per-unit resistance of 0.01 and a per-unit reactance of 0.05. It has a core loss at rated voltage of 150 W. The transformer supplies 7.5 kVA at 240 V and 0.6 power factor lagging to a load connected to its secondary terminals. a. Determine the equivalent impedance in ohms referred to the primary side. b. Find the input voltage. c. Determine the efficiency of the transformer.

4.27 A 10-kVA, 4160/240-V, single-phase transformer has a per-unit resistance of 0.01 and a per-unit reactance of 0.05. It has a core loss at rated voltage of 150 W. The transformer supplies 7.5 kVA at 240 V and 0.6 power factor lagging to a load connected to its secondary terminals. a. Determine the equivalent impedance in ohms referred to the primary side. b. Find the input voltage. c. Determine the efficiency of the transformer.

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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