The two-wattmeter method is used to measure the power delivered to the unbalanced load in...

The two-wattmeter method is used to measure the power delivered to the unbalanced load in Problem The current coil of wattmeter 1 is placed in line aA and that of wattmeter 2 is placed in line bB.

a) Calculate the reading of wattmeter 1.

---

b) Calculate the reading of wattmeter 2.

---

c) Show that the sum of the two wattmeter readings equals the total power delivered to the unbalanced load.

Problem

For the circuit shown in Fig, find

a) the phase currents IAB,IBC, and ICA

---

b) the line currents IaA,IbB, and IcC

when Z1 = 2.4 – j0.7 Ω, Z2 = 8 + j6 Ω, and Z3 = 20 + j0 Ω

Figure