Three loads with the following specifications, resulted from the load flow simulation, have been connected to the power bus shown in Fig. 1.18. If all the loads are modeled by an admittance, determine it in per unit (p.u.):

1) 6 p.u.

2) \((2-j) p . u\)

3) \((2+j) p . u\).

4) \((2-j 2) p . u\).

Load 1: P2 p.u., PF = 0.8 Lagging Load 2: P2 p.u., PF = 0.8 Leading Load 3: P32 p.u., PF = 1 V = (1/-12) V