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5.26 An unloaded generator with a pre-fault voltage 1 pu has the following sequence impedance: Z = 0.15 pu, Z, = Z, = j0.25 pu The neutral is grounded with a reactance of 0.05 pu. The fault current in pu for a single-line to %3D ground fault is (a) 3.75 pu (b) 4.28 pu (c) 6 pu (d) 7.25 pu

5.26 An unloaded generator with a pre-fault voltage 1 pu has the following sequence impedance: Z = 0.15 pu, Z, = Z, = j0.25 pu The neutral is grounded with a reactance of 0.05 pu. The fault current in pu for a single-line to %3D ground fault is (a) 3.75 pu (b) 4.28 pu (c) 6 pu (d) 7.25 pu

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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5.26 An unloaded generator with a pre-fault voltage ct 1 pu has the following sequence impedance: Z, = j0. 15 pu, Z, = Z, = j0.25 pu The neutral is grounded with a reactance of 0.05 pu. The fault current in pu for a single-line to ground fault is (a) 3.75 pu (c) 6 pu (b) 4.28 pu (d) 7.25 pu
Transcribed Image Text:5.26 An unloaded generator with a pre-fault voltage ct 1 pu has the following sequence impedance: Z, = j0. 15 pu, Z, = Z, = j0.25 pu The neutral is grounded with a reactance of 0.05 pu. The fault current in pu for a single-line to ground fault is (a) 3.75 pu (c) 6 pu (b) 4.28 pu (d) 7.25 pu
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