(Solved): A delta unbalanced load is connected as shown in Figure QB4. Given that the supply voltage \( \math ...

A delta unbalanced load is connected as shown in Figure QB4. Given that the supply voltage \( \mathrm{V}_{\mathrm{R} Y} \) is \( 440 \mathrm{~V} \angle 0^{\circ} \) at a frequency of \( 60 \mathrm{~Hz} \). (a) Find the impedance of the load on each phase ( \( Z_{R Y}, Z_{Y B} \) and \( Z_{B R} \) ): ( 6 marks) (b) Find the phase currents \( \left(I_{1}, I_{2}\right. \) and \( \left.I_{3}\right) \) drawn by each load; \( (6 \) marks) (c) Find the line currents ( \( \mathrm{I}_{\mathrm{R}} \), IY, and Is); and \( (6 \) marks) (d) Determine the total power dissipation. (2 marks)