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1. Consider a single-phase transformer with the following specifications. 20 kVA, 1200 V/120 V, 60 Hz Series impedance: 0.02+j0.04 pu Core loss: 0.01 pu; Magnetization current: 0.05 pu

1. Consider a single-phase transformer with the following specifications. 20 kVA, 1200 V/120 V, 60 Hz Series impedance: 0.02+j0.04 pu Core loss: 0.01 pu; Magnetization current: 0.05 pu

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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1. Consider a single-phase transformer with the following specifications. 20 kVA, 1200 V/120 V, 60 Hz Series impedance: 0.02+j0.04 pu Core loss: 0.01 pu; Magnetization current: 0.05 pu (1-a) Determine its efficiency at rated 0.8 PF lagging operation. (1-b) Determine the voltage regulation at rated 0.8 PF lagging operation. (1-c) Determine the rated magnetization current on HV side in amperes. (1-d) Determine the amount of series impedance on LV side in ohms. (1-e) Determine the rated copper loss and core loss in watts. (1-f) Determine the amount of magnetization inductance (in H) on LV side. (1-g) Determine the percentage flux leakage. (1-h) Determine the rated peak flux linkage of primary wining if secondary is open-circuit. Find it without and with considering the leakage. (1-i) Determine the rated excitation current on HV side in amperes. (1-j) Determnine the rated currents on both sides in amperes. (Note: All the ac variables are rms values unless specified otherwise.)
Transcribed Image Text:1. Consider a single-phase transformer with the following specifications. 20 kVA, 1200 V/120 V, 60 Hz Series impedance: 0.02+j0.04 pu Core loss: 0.01 pu; Magnetization current: 0.05 pu (1-a) Determine its efficiency at rated 0.8 PF lagging operation. (1-b) Determine the voltage regulation at rated 0.8 PF lagging operation. (1-c) Determine the rated magnetization current on HV side in amperes. (1-d) Determine the amount of series impedance on LV side in ohms. (1-e) Determine the rated copper loss and core loss in watts. (1-f) Determine the amount of magnetization inductance (in H) on LV side. (1-g) Determine the percentage flux leakage. (1-h) Determine the rated peak flux linkage of primary wining if secondary is open-circuit. Find it without and with considering the leakage. (1-i) Determine the rated excitation current on HV side in amperes. (1-j) Determnine the rated currents on both sides in amperes. (Note: All the ac variables are rms values unless specified otherwise.)
1. Consider a single-phase transformer with the following specifications. 20 kVA, 1200 V/120 V, 60 Hz Series impedance: 0.02+j0.04 pu Core loss: 0.01 pu; Magnetization current: 0.05 pu (1-a) Determine its efficiency at rated 0.8 PF lagging operation. (1-b) Determine the voltage regulation at rated 0.8 PF lagging operation. (1-c) Determine the rated magnetization current on HV side in amperes. (1-d) Determine the amount of series impedance on LV side in ohms. (1-e) Determine the rated copper loss and core loss in watts. (1-f) Determine the amount of magnetization inductance (in H) on LV side. (1-g) Determine the percentage flux leakage. (1-h) Determine the rated peak flux linkage of primary wining if secondary is open-circuit. Find it without and with considering the leakage. (1-i) Determine the rated excitation current on HV side in amperes. (1-j) Determnine the rated currents on both sides in amperes. (Note: All the ac variables are rms values unless specified otherwise.)
Transcribed Image Text:1. Consider a single-phase transformer with the following specifications. 20 kVA, 1200 V/120 V, 60 Hz Series impedance: 0.02+j0.04 pu Core loss: 0.01 pu; Magnetization current: 0.05 pu (1-a) Determine its efficiency at rated 0.8 PF lagging operation. (1-b) Determine the voltage regulation at rated 0.8 PF lagging operation. (1-c) Determine the rated magnetization current on HV side in amperes. (1-d) Determine the amount of series impedance on LV side in ohms. (1-e) Determine the rated copper loss and core loss in watts. (1-f) Determine the amount of magnetization inductance (in H) on LV side. (1-g) Determine the percentage flux leakage. (1-h) Determine the rated peak flux linkage of primary wining if secondary is open-circuit. Find it without and with considering the leakage. (1-i) Determine the rated excitation current on HV side in amperes. (1-j) Determnine the rated currents on both sides in amperes. (Note: All the ac variables are rms values unless specified otherwise.)
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