【单选题】When an inductive load was connected to a 10 0V (rms) , f =50Hz power line , its real power P =6W , reactive power Q =8var , To raise the power factor to 1 , the parallel capacitance C needed is:
【单选题】When an inductive load was connected to a 220V (rms) , f =50Hz power line , its real power P =100W , , To raise the power factor to 0.9( lagging ) , the parallel capacitance C needed is: