The series impedance matrix of a short three-phase transmission line in phase coordinates is $$\left[ {\matrix{ {{Z_s}} & {{Z_m}} & {{Z_m}} \cr {{Z_m}} & {{Z_s}} & {{Z_m}} \cr {{Z_m}} & {{Z_m}} & {{Z_s}} \cr } } \right]$$. If the positive sequence impedance is (1 + 𝑗 10) $$\Omega $$, and the zero sequence is (4 + 𝑗 31) $$\Omega $$, then the imaginary part of Z m (in $$\Omega $$) is ______(up to 2 decimal places).

GATE 2018 Electrical Engineering PYQ — Power System Analysis

GATE 20182018PYQNATanswer pendingexplanation sooneasy

Power System Analysis · Fault Analysis

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Recurring concept

Fault Analysis has appeared in GATE Electrical Engineering 39 times across 23 years (2018, 2021, 2022, 2024, 2025, ...).