1. A balanced âˆ† load consisting of pure resistances of 15â„¦ per phase is in parallel with a balanced Y load having phase impedances of 8 + j6â„¦. Identical impedances of 2+ j5â„¦ are in each of the three lines connecting the combined loads to a 110V three phase supply. Find the current drawn from the supply and the line voltage at the combined loads.

3. Time             Load(kW)
         Residential Commercial Lights
0:00             250    300          100
1:00             250    300          100
2:00             250    300          100
3:00             250    300          100
4:00             250    300          100
5:00             250    300          100
6:00             250    300          100
7:00             350    300             0
8:00             450    400             0
9:00             550    600             0
10:00          550    1100             0
11:00          550    1100             0
12:00          600    1100             0
13:00          600    1100             0
14:00          600    1300             0
15:00          600    1300             0
16:00          600    1300             0
17:00          650    1300             0
18:00          750       900             0
19:00          900       500             0
20:00          1100    500          100
21:00          1100    500          100
22:00          900       300          100
23:00             700    300          100
24:00:00       250    300          100
The load data given is provided in the tables and belongs to a power company. Develop the daily load curve for the primary feeder. Also, determine:
(a) Maximum coincident demand of the system
(b) Demand factor if the feeders total connected load is 4MW
(c) Utilisation factor, if the feeders rated capacity is 5MW 2
(d) Load factor
(e) Diversity factor
(f) Coincidence factor.

1. A balanced âˆ† load consisting of pure resistances of 15â„¦ per...