Question

1. A single phase circuit has a load of 500kVa at a power factor of 0.707...

1. A single phase circuit has a load of 500kVa at a power factor of 0.707 lagging. Calculate the kVA of the capacitors needed to improve the power factor to unity

3. When connected to a 120-v(rms), 60Hz power line, a load absorbes 4 kw at a lagging power factor of 0.8. Find the capacitance necessary to raise the pf to 0.9

4. A three phase motor draws 20kva at 0.707 power factor lagging from a 208V source. Determine the kVa rating of the capacitors to make the combined power factor 0.9 lagging and determine the line current before and after the capacitors are added.

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