GATE 2026 Electrical Engineering Q54

Question

For the balanced 3-phase transmission line shown, consider the following cases:
Case-1: |V1| = 1.1 p. u., |V2| = 0.9 p. u., Z = 0.75∠0° p. u. and θ12 = θ1 - θ2 = 0°
Case-2: |V1| = 1.1 p. u., |V2| = 0.9 p. u., Z = 0.75∠90° p. u. and θ12 = θ1 - θ2 = 90°
Which of the following statements is/are correct about real power loss and reactive power loss in the line?

Accepted Answer

A;D

Answer

Real power loss in Case-1 is more than that in Case-2

Answer

Real power loss in Case-2 is more than that in Case-1

Answer

Reactive power loss in Case-1 is more than that in Case-2

Answer

Reactive power loss in Case-2 is more than that in Case-1