(a) Draw single line diagram of a typical power system. Locate variou…

Question

(a) Draw single line diagram of a typical power system. Locate various sections of it and mention these on typical voltages of generation, transmission and distribution.

(b) A single phase A, C distributor AB is fed from end a and has a total impedance of $(0.2 + j 0.3)$ ohm. At the far end, the voltage $V_B = 240\text{V}$ and the current is $100\text{A}$ at a p.f. of $0.8$ lagging. At the mid - point M, a current of $100\text{a}$ is tapped at a p.f. of $0.6$ lagging with reference to the voltage $V_m$ at the mid-point. Calculate the supply voltage $V_A$ and phase angle between $V_A$ and $V_B$.