Answer: On inductive loads, as usual in practice, the effect of capacitance is to reduce voltage drop and also the copper losses of the lines.
It means if we introduce any capacitance in a inductive circuits first the voltage drop in circuit will reduced and copper losses will also decrease.
A load with poor power factor will draw more current than needed to output a certain amount of real power. The extra current will be driving reactive power. If you compensate the reactive power you will only decrease the current pulled by the load. Voltage will stay the same more or less, and real power also, you will only decrease the flow of reactive power.