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A single-phase, 2,959 VA, 2200/220 transformer has the following open circuit and short circuit test data: Open-circuit test: 433 watts, while the test is carried out at rated voltage. Short circuit test: 434 watt, while the test is carried out at rated current. for a unity power factor, calculate the PERCENT transformer efficiency at 2% of the rated load

A single-phase, 2,959 VA, 2200/220 transformer has the following open circuit and short circuit test data: Open-circuit test: 433 watts, while the test is carried out at rated voltage. Short circuit test: 434 watt, while the test is carried out at rated current. for a unity power factor, calculate the PERCENT transformer efficiency at 2% of the rated load

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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A single-phase, 2,959 VA, 2200/220 transformer has the following open circuit and short circuit test data: Open-circuit test: 433 watts, while the test is carried out at rated voltage. Short circuit test: 434 watt, while the test is carried out at rated current. for a unity power factor, calculate the PERCENT transformer efficiency at 2% of the rated load Question 6 A 3-phase, 230 V, 30 KVA, 0.9 PF(lag) load is supplied by three 10 KVA, 1330/230 V, and 60 Hz transformers connected in YA. The transformers are supplied from a 3p source through a 3p feeder whose impedance is 3+14 2 per phase. The equivalent impedance of one transformer referred to on the low-voltage side is 0.3+j0.3 02. Determine: The supply voltage if the load voltage is 230 V. The % voltage regulation
Transcribed Image Text:A single-phase, 2,959 VA, 2200/220 transformer has the following open circuit and short circuit test data: Open-circuit test: 433 watts, while the test is carried out at rated voltage. Short circuit test: 434 watt, while the test is carried out at rated current. for a unity power factor, calculate the PERCENT transformer efficiency at 2% of the rated load Question 6 A 3-phase, 230 V, 30 KVA, 0.9 PF(lag) load is supplied by three 10 KVA, 1330/230 V, and 60 Hz transformers connected in YA. The transformers are supplied from a 3p source through a 3p feeder whose impedance is 3+14 2 per phase. The equivalent impedance of one transformer referred to on the low-voltage side is 0.3+j0.3 02. Determine: The supply voltage if the load voltage is 230 V. The % voltage regulation
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