With the instruments located in the high-voltage side and the low-voltage side short-circuited, the short-circuit test readings for a 50 kVA 2400/240 V transformer are, Vse = 48 V, Isc = 20.8 A, Psc = 617W. An open circuit test with the low-voltage side energized gives: Voc = 240 V, Loc=5.41 A, Poc = 186W. (a) Determine the efficiency and the voltage regulation at full load,@0.8 power factor lagging. (b) Determine the efficiency at 50% load @unity power factor.

With the instruments located in the high-voltage side and the low-voltage side short-circuited, the short-circuit test readings for a 50 kVA 2400/240 V transformer are, Vse = 48 V, Isc = 20.8 A, Psc = 617W. An open circuit test with the low-voltage side energized gives: Voc = 240 V, Loc=5.41 A, Poc = 186W. (a) Determine the efficiency and the voltage regulation at full load,@0.8 power factor lagging. (b) Determine the efficiency at 50% load @unity 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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