■ Questi**: What is power factor? Whether it should be high or
low? Why?


■Answer: Power factor should be high in order to get smoothoperati** of the system. Low power factor means losses will be ****. it is the ratio of true power to apparent power. It has to be ideally 1. if it is too low then cable over heating & equipment overloading will occur. if it is greater than 1 then load will act as capacitor and starts feeding the source and will cause tripping. (If pf is poor ex: 0.17 to meet actual power load has to draw **** current(V c**stant),result in **** losses if pf is good ex: 0.95 to meet actual power load has to draw less current(V c**stant),result in less losses).