A pump draws water from a 20cm suction pipe and discharges through a 15cm pipe in which the velocity is 4 m/s. The pressure is -35 KPa at A. The 15cm pipe discharges into the air at C. To what height h above B can the water be raised if B is 2m above A and 25 KW is delivered to the pump? Assume that the pump operates at 70% efficiency and the frictional loss between A and C is 3 J/N.

(12 mins) The penstock supplies water from a reservoir to the Pelton wheel with a gross head of 516 m. One third of the gross head is lost in friction in the penstock. The rate of flow of water through the nozzle fitted at the end of the penstock is 1.8 m³/s. The angle of deflection of the jet is 165º. Determine the power (MW) given by the water to the runner. Take speed ratio = 0.45 and C₁ = 1.0. Use p = 998 kg/m³. Round off your final answer to two decimal places.