what is the use of power factor ? where its applicable ?
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Answer Posted / nagendra murthy m
power factor is the ratio of the real power flowing to load
to the apparent power in the circuit. it is a dimensionless
number between 0 and 1.The significance of power factor lies
in the fact that utility companies supply customers with
volt-amperes, but bill them for watts. Power factors below
1.0 require a utility to generate more than the minimum
volt-amperes necessary to supply the real power (watts).
This increases generation and transmission costs. For
example, if the load power factor were as low as 0.7, the
apparent power would be 1.4 times the real power used by the
load. Line current in the circuit would also be 1.4 times
the current required at 1.0 power factor, so the losses in
the circuit would be doubled. so this must be minimized
using suitable methods.
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