A 2 wire d.c distributor AB is fed from both ends. At the feeding points A& B, the voltage is maintained  at 250V. The total length of the distributor is 300m and loads are tapped off as under, 120A at 150m from A: 80A at 100m from B; calculate the minimum voltage on the distributor. Total resistance of distributor is 0.18 ohms. How much power loss between A and 120A loading point? Draw the distributor and show all loads, currents in distributor and feeding points

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Distribution System

The final stage in the delivery of the electric power is the electric power distribution system. From the transmission system to the individual customers it carries electricity. The distribution system is connected with the transmission system and is used to lower the voltage of the transmission to medium voltage in the range of 2 kV to 35 kV with the help of transformers. This medium voltage to the distribution transformers located near the customer's premises is carried by the primary distribution system lines. These distribution transformers in turn lower the voltage to utilization voltage used in lightings, household appliances, industrial equipments etc. Through secondary distribution lines often several customers are supplied from one transformer. It is through service drops, the commercial and residential customers are connected to the secondary distribution system lines. Customers who demand a larger amount of power can be connected directly to the primary distribution system level or the sub-transmission level.