The bus impedance matrix of a 3-bus system (in pu) is $Z_{bus} = \begin{bmatrix} j0.059 & j0.061 & j0.038 \\ j0.061 & j0.093 & j0.066 \\ j0.038 & j0.066 & j0.110 \end{bmatrix}$ A symmetrical fault (through a fault impedance of j0.007 pu) occurs at bus 2. Neglecting pre-fault loading conditions, the voltage at bus 1, during the fault is ________ pu (round off to three decimal places).

GATE 2025 Electrical Engineering Q33 — Electrical Engineering

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Electrical Engineering · Power Systems - Fault Analysis

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Power Systems - Fault Analysis has appeared in GATE Electrical Engineering 5 times across 3 years (2018, 2023, 2025).

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bus impedance matrixsymmetrical faultfault impedancevoltage