The loading of a factory on a 1000 V, 60 Hz system includes:
20 kW heating (unity power factor)
10 kW (Pi) induction motors (0.7 lagging power factor)
5 kW lighting (0.85 lagging power factor)
a. Establish the power triangle for the total loading on the supply.
b. Determine the power-factor capacitor required to raise the power factor to unity.
c. Determine the change in supply current from the uncompensated to the compensated system.
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