GATE Electrical Engineering (EE) 2018 Solved Paper

The positive, negative and zero sequence impedances of a 125 MVA, three-phase, $15.5$ $\mathit{k}\mathit{V}$, star-grounded, $50\mathit{H}\mathit{z}$ generator are $\mathit{j}0.1\mathit{p}\mathit{u},\mathit{j}0.05\mathit{p}\mathit{u}$ and $\mathit{j}0.01\mathit{p}\mathit{u}$ respectively on the machine rating base. The machine is unloaded and working at the rated terminal voltage. If the grounding impedance of the generator is $\mathit{j}0.01$ pu then the magnitude of fault current for a b-phase to ground fault (in $\mathit{k}\mathit{A}$ ) is (upto 2 decimal places).