Problem 4 An electric saw, a wood shaper, and a motor load of a workshop establish a 18 kVA power demand at 0.5 power factor lagging on a 208 V, 60 Hz supply. a) Establish the power triangle for the load. b) Determine the power-factor capacitor that must be place in parallel with the load to raise the power factor to 0.9 lagging. c) Determine the change in supply current from the uncompensated to the compensated system. d) Determine the power-factor capacitor that must be placed in parallel with the load to raise the power factor to unity