Q23/ In the balanced three phase power measurement using two wattmeter method, each wattmeter reads 18 kW , when the pf is unity. What does each wattmeter reads when the pf falls to (i) 0.6 lag and...

Q23/

In the balanced three phase power measurement using two wattmeter method, each wattmeter reads 18 kW , when the pf is unity. What does each wattmeter reads when the pf falls to (i) 0.6 lag and (ii) 0.422 lag. The total three-phase power remains unchanged.