Write the solution of the given problem:
A 3-phase, 50 Hz, 400 V motor develops 100 H.P. (74·6 kW), the power factor being 0·75 lagging and efficiency 93%.
A bank of capacitors is connected in delta across the supply terminals and power factor raised to 0·95 lagging.
Each of the capacitance units is built of 4 similar 100 V capacitors.
Determine the capacitance of each capacitor.