A distribution feeder of $1$ $km$ length having resistance, but negligible reactance, is fed from both the ends by $400V$, $50$ $Hz$ balanced sources. Both voltage sources $S_1$ and $S_2$ are in phase. The feeder supplies concentrated loads of unity power factor as shown in the figure.
The contributions of $S_1$ and $S_2$ in $100$ $A$ current supplied at location $P$ respectively, are
- $75$ $A$ and $25$ $A$
- $50$ $A$ and $50$ $A$
- $25$ $A$ and $75$ $A$
- $0$ $A$ and $100$ $A$