Question { L&T, 4250 }

difference between the earthing,grounding and neutral

Answer

earthing and grounding both are same,two type of grounding
is there,1)system grounding-it is used to protect the
system.Eg.CT,2)body grounding-it is used to protect the
unwanted shock form body.neutral is return path form the load,

Question { APGenco, 18140 }

ohms law aplicable

Answer

Well Anusha,i have expected that constant resistance,mostly
forgot this indirect word.resistance is proposition's
constant not only in temp.

Question { 4995 }

how is working the APFC when varying the load?

Answer

When varying the load,The reactive power also will vary.so
the load current(reactive power current) will change.The
automatic condition, the Pf relay seance the current and
switch on the capacitor with respect to that reactive power
current variation.