Part 3: From the picture, with a positive-phase sequence
1. Determine and draw phasor-diagram of $V_{AB}$, $V_{BC}$ and $V_{CA}$ (2 marks)
2. Calculate $V_1$ and $I_2$ (2 marks)
3. Determine and draw phasor-diagram of $V_{A'B'}$, $V_{B'C'}$ and $V_{C'A'}$ (2 marks)
4. Find three-phase power absorbed by each wye and delta load (2 marks)
5. Determine line total line losses (1 mark)
6. Calculate total three-phase power supplied by source (1 mark)