A two conductor dc street main ab, 500 meters in length is fed from both ends at 250 volts. loads of 50 a, 60 a, 40 a and 30 a are tapped at distances of 100 m, 250 m, 350 m and 400 m from a respectively. if the cross sectional area of the conductors is 1cm2 and specific resistance of the material of the conductors is 1.7x10-8 ω-m, determine the minimum consumer voltage.
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