Q1. A balanced 3 phase Y-Y connected circuit with positive sequence is as shown in the figure. 06Ω jΩ 1.20 jóN 68 Ω 46Ω 200 20° | 200 2-120° 0.6 N j2 N 1.2N j6N 68 N ¡46N N | 200 2120° 0.6 2 j20 1.20 jóN 68 N j46 N a) Construct a single-phase equivalent circuit of the 3-phase system. b) Calculate the line currents: laa, Ibe and Icc. c) Calculate the phase voltages at the load terminals: Van, VBN and VCN. d) Calculate the line voltages at the load terminals: VAB, VBc and VCa.

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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.