Power Systems - Power Factor Correction

Using shunt capacitors, the power factor of a 3-phase, 4 kV induction motor (drawing 390 kVA at 0.77 pf lag) is to be corrected to 0.85 pf lag. The line current of the capacitor bank, in A, is ________ (round off to one...

A load is supplied by a 230 V, 50 Hz source. The active power P and the reactive power Q consumed by the load are such that 1 kW $\le P \le$ 2 kW and 1 kVAR $\le Q \le$ 2 kVAR. A capacitor connected across the load for p...