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A 12KVA, 1200/400 V, single-phase, 50Hz transformer has the following test results: Short Circuit test (LV side): Vsc=30 V, Open Circuit test (HV side): V1=1200V, 10=1.2A, Po=70 W Isc=22 A, Psc-80 W Find the following:

A 12KVA, 1200/400 V, single-phase, 50Hz transformer has the following test results: Short Circuit test (LV side): Vsc=30 V, Open Circuit test (HV side): V1=1200V, 10=1.2A, Po=70 W Isc=22 A, Psc-80 W Find the following:

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
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A 12KVA, 1200/400 V, single-phase, 50HZ transformer has the following test results: Short Circuit test (LV side): Vsc=30 v, Open Circuit test (HV side): V1=1200V, 10=1.2A, Po=70 W Isc=22 A, Psc=80 w Find the following: 1). Equivalent resistance of the transformer referred to as LV side.(Req2). 2) Equivalent leakage reactance (Xeq2). 3). Calculate the magnitude secondary voltage JE2| to keep the secondary terminal voltage 400 V at full load and 0.8 power factor lagging. 4). Voltage Regulation of the transformer at full load and 0.8 power factor lagging.in% 5). Efficiency of the transformer in %
Transcribed Image Text:A 12KVA, 1200/400 V, single-phase, 50HZ transformer has the following test results: Short Circuit test (LV side): Vsc=30 v, Open Circuit test (HV side): V1=1200V, 10=1.2A, Po=70 W Isc=22 A, Psc=80 w Find the following: 1). Equivalent resistance of the transformer referred to as LV side.(Req2). 2) Equivalent leakage reactance (Xeq2). 3). Calculate the magnitude secondary voltage JE2| to keep the secondary terminal voltage 400 V at full load and 0.8 power factor lagging. 4). Voltage Regulation of the transformer at full load and 0.8 power factor lagging.in% 5). Efficiency of the transformer in %
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