Performance of transmission lines 1
Question 9 A Three phase load of 2000 KVA , 0.8 power factor is supplied at 6.6 KV , 50 Hz by means of a 33 KV transmission line 20 km and 33/6.6 kilo volt step down transformer . the resistance and reactance of each conductor are 0.4 Ohm and 0.5 ohm per km respectively . the resistance and reactance of transformer primary are 7.5 ohm and 13.2 ohm , while those of secondary are 0.35 ohm and 0.65 ohm respectively , find the voltage necessary at the sending end of transmission line 6.6 Kv is maintained at the receiving end . determine also the sending end power factor and transmission efficiency . Question Question ...