Answer / aziz rehman

power factor is tghe ratio between Active power and apearant power
PF=KW(actvie power)/KVA(appearant power)

Answer / hema chandra.m

power factor is the cosine angle of the voltage and current

Answer / kalyan

Power Factor is the numerical value of the cosine of the
phase angle between the applied Voltage and the Current
drawn from the applied Voltage.

Answer / abhay

we know p=vi cos¤ where cos¤ is called
power factor


oterwise pf is also equal to =r/z

Answer / thanigai1984

power factor is the ratio between Active power and apearant
power
PF=KW(actvie power)/KVA(appearant power)
we used to improve the power factor by change the phase
shifter.... and the capacitor banks

Answer / eraks

wenever v supply power (S) to a load den it gets divided into two parts namely active/real/true power (P) and reactive power(Q) depending on the type of load.
so v can say S= P+Q vectorially &
P = S cos#
Q = S sin#
where S is supply power or apparent power.

=> cos# = P/S i.e. ratio of true power and apparent power.THIS is POWER FACTOR.


Its value lies btwn (-1) to ( +1)
power factor is negative wen direction of flow of power
gets reversed i.e. from load to supply or v can say it may b the case due to ferranti effect.

Answer / lakshman raju

the ratio of the real power flowing to the load to the apparent power and its value lies between 0 to 1.

My load is 1635 KW. & current pf is 0.884, I have to improve it for 0.99.Please suggest what KVAR value is needed?

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