GATE EE 2017 Set 2 — Question 51

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NAT+2 / -0MediumTransmission Line ParametersGeneration & TransmissionPower Systems

Power Systems → Generation & Transmission → Transmission Line Parameters

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Consider an overhead transmission line with 3-phase, 50 Hz50\text{ Hz} balanced system with conductors located at the vertices of an equilateral triangle of length Dab=Dbc=Dca=1mD_{ab} = D_{bc} = D_{ca} = 1\text{m} as shown in figure below. The resistances of the conductors are neglected. The geometric mean radius (GMR) of each conductor is 0.01 m0.01\text{ m}. Neglecting the effect of ground, the magnitude of positive sequence reactance in Ω/km\Omega/\text{km} (rounded off to three decimal places) is __________.

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