1. (a). what is the need for power factor correction?
(b). A 3phase synchronous. Motor is connected in parallel with a load of 500 KW, 0.8p.f lagging and its excitation is adjusted until it raises the total P.F to 0.9 lagging. If the mechanical load on the motor including loss takes 125KW, calculate the KVA input to the motor. Draw pharos diagram for condition.
2. i) What are the disadvantages of low power factor? How to avoid it?
ii) What are the measures relates to power quality?