1. A load of 300 kw with a power factor 0.65 lagging, has the
power improved to 0.90 lagging by parallel capacitors. How many
kVAR must these capacitors furnish?
2.A single-phase motor is taking 20 A from a 400-V, 50 Hz supply,
the power factor being 80% lagging. What value of capacitor
connected across the circuit will be necessary to raise the power
factor to unity?