Answer / wareagle

Go the the site below

http://www.google.com/search?
sourceid=navclient&aq=hts&oq=&ie=UTF-
8&rlz=1T4GZAZ_enUS396US396&q=how+capacitor+control+the+power
+factor

Answer / rakesh viswanadhan

bascically power factor=real power/apparent power
=R/Z
r is unaffected by capacitor but z changes with the
introduction of a capacitor.
Z=(r^2+(2*pi*f*c)*2)^1/2
thus if capacitor increases then z increases and gradually
power factor decreases.
but when C decreases beyond some value R becomes prominent
thus power factor doesnot increase indefinitely

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