DC Distribution
Question 30 A DC 2 wire Distributor ab is 500 m along and is fed at both ends at 240 volt . the distributor is loaded as diagram . the resistance of distribute ( go and return ) is 0.001 Ohm per metre. calculate (1) the point of minimum voltage and (2) the value of this voltage . Question 47 A 3 wire DC distribution 250 m long is supplied at end P at 500/ 250 volt and is loaded as under . positive side : 20 ampere 150 m from P , 30 ampere 250 m from p , negative side 24 ampere from P , 36 ampere 220 m from p , the resistance of each outer wire is 0.02 Ohm per 100 meter and the cross- section of the middle wire is one half that of the outer . find the voltage across each load point . Question 39 In DC network A is the feeding point and is maintained at 250 volt . the resistance of the various branches (go and return) are i...