Electric power in a 3 phase ckt can be measured by using two methods 1) 2 wattmeter method 2) 3 wattmeter method. In 3 wattmeter method in eachphase a single wattmeter in connected. So wattmeter reads power in that perticular phase. So for three phase total power will be = Rph + Yph + Bph. In 2...
