Correct Answer - Option 3 : increases
Concept:
In AC circuits, the power factor can be defined as the ratio of real power to the apparent power.
It is represented by cos ϕ
In AC circuits, real power (in kW) = VI cos ϕ
Reactive power (in kVAR) = VI sin ϕ
Apparent power (in kVA) = VI
\(\cos \phi = \frac{{Real\;power\;\left( {in\;kW} \right)}}{{Apparent\;power\;\left( {in\;kVA} \right)}}\)
Application:
As the power factor is the ratio of real power to the apparent power, with the improvement in the power factor of the system, real power increases, and hence kWh increases.
