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Problem 3 Consider a 100 kVA, 7200/240 V, 60 Hz transformer. Assume that the open-circuit and short-circuit tests were performed on the transformer and that the following data were obtained: ii. iii. Voltmeter Ammeter Wattmeter iv. V. Open-Circuit Test (on Primary) Voc=7200 V Loc=0.65 A Poc=425 W Also assume that the transformer operates at full load with a 0.90 lagging power factor. If the given power factor belongs to the load, not to the transformer, determine the following: i. The equivalent impedance, resistance, and reactance of the transformer all referred to the primary side Total losses, including the copper and core losses, at full load The efficiency of the transformer Short-Circuit Test (on Primary) Percent voltage regulation of the transformer The phasor diagram of the transformer Vc=250V Isc=13.889 A Pse=1420 W

Problem 3 Consider a 100 kVA, 7200/240 V, 60 Hz transformer. Assume that the open-circuit and short-circuit tests were performed on the transformer and that the following data were obtained: ii. iii. Voltmeter Ammeter Wattmeter iv. V. Open-Circuit Test (on Primary) Voc=7200 V Loc=0.65 A Poc=425 W Also assume that the transformer operates at full load with a 0.90 lagging power factor. If the given power factor belongs to the load, not to the transformer, determine the following: i. The equivalent impedance, resistance, and reactance of the transformer all referred to the primary side Total losses, including the copper and core losses, at full load The efficiency of the transformer Short-Circuit Test (on Primary) Percent voltage regulation of the transformer The phasor diagram of the transformer Vc=250V Isc=13.889 A Pse=1420 W

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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Problem 3 Consider a 100 kVA, 7200/240 V, 60 Hz transformer. Assume that the open-circuit and short-circuit tests were performed on the transformer and that the following data were obtained: Voltmeter Ammeter Wattmeter ii. iii. iv. V. Open-Circuit Test (on Primary) Voc=7200 V 1oc=0.65 A Poc=425 W Short-Circuit Test (on Primary) Also assume that the transformer operates at full load with a 0.90 lagging power factor. If the given power factor belongs to the load, not to the transformer, determine the following: i. The equivalent impedance, resistance, and reactance of the transformer all referred to the primary side Total losses, including the copper and core losses, at full load The efficiency of the transformer Percent voltage regulation of the transformer The phasor diagram of the transformer Vsc=250V Isc=13.889 A Psc = 1420 W
Transcribed Image Text:Problem 3 Consider a 100 kVA, 7200/240 V, 60 Hz transformer. Assume that the open-circuit and short-circuit tests were performed on the transformer and that the following data were obtained: Voltmeter Ammeter Wattmeter ii. iii. iv. V. Open-Circuit Test (on Primary) Voc=7200 V 1oc=0.65 A Poc=425 W Short-Circuit Test (on Primary) Also assume that the transformer operates at full load with a 0.90 lagging power factor. If the given power factor belongs to the load, not to the transformer, determine the following: i. The equivalent impedance, resistance, and reactance of the transformer all referred to the primary side Total losses, including the copper and core losses, at full load The efficiency of the transformer Percent voltage regulation of the transformer The phasor diagram of the transformer Vsc=250V Isc=13.889 A Psc = 1420 W
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