rms 1. A balanced three-phase, star-connected voltage source has VRN =230 Z60° N V with RYB phase sequence, and it supplies a balanced delta-connected three-phase load. The total power drawn by the load is 15 kW at 0.8 lagging power factor. Find the line currents, load and phase currents. 2. A balanced star-connected load is supplied from a symmetrical 3-phase, 440 V; 50 Hz supply. The current in phase is 20 A and lags its respective phase voltage by an angle 40°. Calculate (a) load parameters, (b) total power, and (c) readings of two wattmeters in load current to measure total power.

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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.