List of top Power Systems Questions on Symmetrical Components asked in GATE EE

The initial three-phase voltage phasors (\(\bar V_A\), \(\bar V_B\), and \(\bar V_C\)) at a bus of a power network are as shown in Case-1. Due to a disturbance, the bus voltage phasors changed in phase by a small angle \(\Delta\theta\), and the magnitudes remained the same as depicted in Case-2.

Which one of the following statements is correct about the zero sequence components?

Suppose \(I_A, I_B\) and \(I_C\) are a set of unbalanced current phasors in a three-phase system. The phase-B zero-sequence current is \(I_{B0} = 0.1\angle 0^\circ\) p.u. If the phase-A current \(I_A = 1.1\angle 0^\circ\) p.u and phase-C current \(I_C = (1\angle 120^\circ + 0.1)\) p.u, then \(I_B\) in p.u is