Answer Posted / naresh

The accurate defination is it is the angle between
Fundamental voltage & Fundamental current. we can calculate
the fundamental components from fourier transform.

in case of linear load(resistor,capacitor,inductor)
we can improve it
1.by connecting capacitor loads
2.using Synchronopus condensor(overexcited synchronous motor
under noload condition)
3.by using Power Factor Correction Unit
in case of non linear load(containing
converters,inverters,rectyifiers)

1.by adjusting the delay angle,extinction angle

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