A load of 300 kW is driven by a 3-phase motor of 0.9 efficiency. The motor has a power factor of 0.7 lagging and is supplied from a 415 V, 3-phase 50 Hz supply,through a cable with copper conductors. A
star-connected capacitor bank is used to correct this power factor to 0.95 lagging. star-connected capacitor bank to correct this power factor to 0.95 lagging. What effect does the capacitor bank have on the efficiency of the motor?