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GATE EE 2018 Set 1 — Question 57

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NAT+2 / -0MediumUnbalanced CircuitsAC Power & Three-PhaseElectric Circuits

Electric Circuits → AC Power & Three-Phase → Unbalanced Circuits

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Question

A three-phase load is connected to a three-phase balanced supply as shown in the figure. If Van=100∠0∘V_{an} = 100 \angle 0^\circ V, Vbn=100∠−120∘V_{bn} = 100 \angle -120^\circ V and Vcn=100∠−240∘V_{cn} = 100 \angle -240^\circ V (angles are considered positive in the anti-clockwise direction), the value of R for zero current in the neutral wire is ___________ Ω\Omega (up to 2 decimal places).

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