l10answer 1 2 3 1. In a power system with negligible resistance, the three-phase fault current at a point is 8 pu. The seriesreactance to be inserted at the fault point to limit theshort circuit current to 5 pu isa. 0.125 pub. 0.333 puc. 0.075 pud. 0.20 pu2. A 3-phase, 15 MVA, 10 kV alternator has internal reactanceof 6s and negligible resistance. Find the externalreactance per phase to be connected in series with thealternator so that steady current on short circuit does notexceed 6 times the full load current.a. 0.589nb. 1.6720c. 10.670d. 0.71103. A 3-phase, 13.8 kV, 50 MVA alternator has positive,negative and zero sequence of 0.20, 0.20 and 0.05 pu. Ifthe alternator is on no-load, determine the fault currentfor a three-phase fault.a. 10,460 Ab. 15,200 Ac. 12,200 Ad. 14,500 A

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1. In a power system with negligible resistance, the three- phase fault current at a point is 8 pu. The series reactance to be inserted at the fault point to limit the short circuit current to 5 pu is a. 0.125 pu b. 0.333 pu c. 0.075 pu d. 0.20 pu 2. A 3-phase, 15 MVA, 10 kV alternator has internal reactance of 6& and negr1iaiblee resistance Find the external

1. In a power system with negligible resistance, the three- phase fault current at a point is 8 pu. The series reactance to be inserted at the fault point to limit the short circuit current to 5 pu is a. 0.125 pu b. 0.333 pu c. 0.075 pu d. 0.20 pu 2. A 3-phase, 15 MVA, 10 kV alternator has internal reactance of 6& and negr1iaiblee resistance Find the external

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter7: Symmetrical Faults

Section: Chapter Questions

Problem 7.15P

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