**Description :** Measurement of power and power factor of a 3-phase system by two wattmeter method can be obtained in case of 1. Balanced load and balanced source 2. Balanced source with 3-phase 3-wire unbalanced load 3. Unbalanced source with 3-phase 3 ... b) 2, 3 and 5 (c) 1, 2, 3, 4 and 5 (d) 1, 2, 3 and 5

**Last Answer :** Measurement of power and power factor of a 3-phase system by two wattmeter method can be obtained in case of 1. Balanced load and balanced source 2. Balanced source with 3-phase 3-wire unbalanced load 3. Unbalanced source with 3- ... b) 2, 3 and 5 (c) 1, 2, 3, 4 and 5 (d) 1, 2, 3 and 5