Basic Engineering Circuit Analysis 11th Edition by David Irwin ,Robert Nelms

تمرين 62

An industrial load is supplied through a transmission line that has a line impedance of 0.1 + j 0.2 . The 60-Hz line voltage at the load is 480 0° V rms. The load consumes 124 kW at 0.75 pf lagging. What value of capacitance when placed in parallel with the load will change the power factor to 0.9 lagging