Example 6. A 400 V 3-phase 4-wire system supplies the following loads: Phase R-40 A at p.f. 0.8 lagging, phase S-30 A at unity p.f. and phase T- 20 A at 0.8 leading. The resistance of each conductor is 0.2 ohm and of the neutral 0.4 ohm. Determine the load voltages 226.18 volts, 210.24 V, 242.32 V

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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.