what happens if power factor is maintained at 0.9?give me
the answer in technicall way rather than telling the
penality n all
Answer Posted / guest
See the first thing is Power factor is angle between
voltage & current. see most of our load is inductive, & in
inductive load current always lags the supply voltage. In
unity P.f.condition current & voltage always in phase with
each other.
since P=VIcos(angle between V & I )
Now for a constant power as your pf changes i.e. decreases
to keep power demand constant current has to be increase as
your voltage is constant.in this way your current
increases , it causes increase in your copper losses
(I*I*R), voltage drop(I*R). And to keep voltage constant
more reactive power has to be provide.
generally any supply company penalties for more demand of
reactive power.
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Show Details FROM:Muhammed Ikram TO:qa@allinterview.com Message flagged Saturday, June 4, 2011 10:07 PMMessage bodyHello all, i want to ask a question to all of you that what is VMM (voltage monitoring module )? how it work,s? i heard somewhere that it compare 1 phase voltage to other phase voltage. but there is also some setting on it. how to set it,s setting. please tell me briefly. Thank,s and Regard,s. Muhammed Ikram.
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