Q.3/A pipeline carrying oil (sp.gr. = 0.87) changes in diameter from 200 mm diameter at position 1 to 500 mm diameter at position 2' which is 4 metres at a higher level. If the pressures at 1 and 2 are 100 kN/m' and 60 kN/m' respectively and the discharge is 0.2 m/s, determine Loss of head