GATE EE 2019 Set 1 — Question 32

NAT+1 / -0MediumFault Current CalculationFault AnalysisPower SystemsSymmetrical Faults

Power Systems → Fault Analysis → Fault Current Calculation

Last updated 5 September 2026

Question

Five alternators each rated 5 MVA, 13.2 kV with 25% of reactance on its own base are connected in parallel to a busbar. The short-circuit level in MVA at the busbar is________.

S_{sc1} = \frac{S_{base}}{X_{pu}} = \frac{5 \text{ MVA}}{0.25} = 20 \text{ MVA}

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S_{sc1} = \frac{S_{base}}{X_{pu}} = \frac{5 \text{ MVA}}{0.25} = 20 \text{ MVA}

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