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Q2. A short circuit test on a transformer of 20KVA 2400/240 V 50 Hz gives the following instruments readings: wattmeter reading: 277 W, voltmeter reading : 68 volts, ammeter reading :8.6 A a) Obtain the equivalent transformer parameter referred to the low-voltage side. b) The voltage regulation of the transformer for an (0.760) leading PF load. c) Draw the phasor diagram of the voltages for the transformer. d) Determine the efficiency of this transformer at full load if the core loss is 130W.

Q2. A short circuit test on a transformer of 20KVA 2400/240 V 50 Hz gives the following instruments readings: wattmeter reading: 277 W, voltmeter reading : 68 volts, ammeter reading :8.6 A a) Obtain the equivalent transformer parameter referred to the low-voltage side. b) The voltage regulation of the transformer for an (0.760) leading PF load. c) Draw the phasor diagram of the voltages for the transformer. d) Determine the efficiency of this transformer at full load if the core loss is 130W.

Introductory Circuit Analysis (13th Edition)
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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Q2. A short circuit test on a transformer of 20KVA 2400/240 V 50 Hz gives the following instruments readings: wattmeter reading: 277 W, voltmeter reading : 68 volts, ammeter reading :8.6 A a) Obtain the equivalent transformer parameter referred to the low-voltage side. b) The voltage regulation of the transformer for an (0.760) leading PF load. c) Draw the phasor diagram of the voltages for the transformer. d) Determine the efficiency of this transformer at full load if the core loss is 130W.
Transcribed Image Text:Q2. A short circuit test on a transformer of 20KVA 2400/240 V 50 Hz gives the following instruments readings: wattmeter reading: 277 W, voltmeter reading : 68 volts, ammeter reading :8.6 A a) Obtain the equivalent transformer parameter referred to the low-voltage side. b) The voltage regulation of the transformer for an (0.760) leading PF load. c) Draw the phasor diagram of the voltages for the transformer. d) Determine the efficiency of this transformer at full load if the core loss is 130W.
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