Question

A two conductor main AB. 500 m in length is fed from both ends at 250 volts. Loads of 50 A. 60 A. 40 A and 30 A are tapped at distance of 100 m, 250 m, 350 m and 400 m from end A respectively. If the X section of conductor be 1 cm2 and specific resistance of the material of the conductor is 1.7 ? ? cm. determine the minimun 3. [245.07 V]

Answer 1

250V 50 A GoA WoA 30A Now apply ing lairehofs lad =250 So Now we bnaw that .7 x102 238S So, r (8-5X10-2) = 1 127.5+47+127.5 + 306JMO2 Now we can See i238 A in nde Su minimum Volge wi be at this point /e 250m fornA. and will be 250-(IRAI_ (1-50) R12) 250 2 u65 = 2 247.535 o mini mum Conumer VoHaye minimum Conurner, yoHnge 1