GATE Electrical Engineering (EE) 2015 Shift 2 Solved Paper

The coils of a wattmeter have resistances 0.01 Ω and 1000 Ω ; their inductances may be neglected The wattmeter is connected as shown in figure, to measure the power consumed by a load, which draws 25A at power factor 0.8. The voltage across the load terminals is 30 V. The percentage error on the wattmeter reading is –