Suppose IA, I and I are a set of unbalanced current phasors in a three-phase system. The phase-B zero sequence current Io = 0.120° p.u. If phase-A current I₁ = 1.120° p.u. and phase-C current I = (1/120° + 0.1) p.u., then Ig in p.u. is (a) 1.12240° -0.120° (b) 12240° -0.120° (c) 12-120° +0.120° (d) 1.12-120° + 0.120°

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Single Phase AC Circuit

Alternating Current (AC) is a type of electric power in which the electric current changes, both in magnitude and direction, at regular intervals. This AC Circuits can deliver power in either a Single Phase system or a Three Phase system.