Three parallel three-phase loads are supplied from a 207.85-V rms, 60-Hz three-phase supply. The loads are as follows: Load 1: A 15 HP motor operating at full-load, and 0.6 lagging power factor. Load 2: A balanced resistive load that draws a total of 6 kW. Load 3: A Y-connected capacitor bank with a total rating of 16 kvar. (a) What is the total system kW, kvar, power factor, and the supply current per phase? (b) What is the system power factor and the supply current per phase when the resistive load and induction motor are operating but the capacitor bank is switched off?

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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.