Q. 29 An LPF wattmeter of power factor 0.2 is having three voltage settings 300 V, 150
V and 75 V, and two current settings 5 A and 10 A. The full scale reading is 150.
If the wattmeter is used with 150 V voltage setting and 10 A current setting, the
multiplying factor of the wattmeter is _______.