A tapered pipe, through which water is flowing, is having diameter, 30cm and 20 cm at the cross-sections 1 and 2 respectively. The velocity of water at section 1 is given as 3.5m/s. Find the velocity head at section 1 and 2 and also rate of discharge.

Water is pumped through a 750ft long inch nominal diameter sch 40 pipe. The difference in height between the outlet and inlet planes is given as 50 ft. Pump efficiency is 80% and the power of the motor is 20 horsepower. Friction losses are given as 50 ft-lbt / lbm. Calculate the flow rate in the pipeline.

PROBLEM 5: In Lake Geneva (Switzerland), there is a water jet (called the Jet d’Eau) that is discharged 130 m straight upward (measured from the surface of the lake). The exit of the discharge pipe is 20 cm in diameter.

In a 225 mm pipeline 0.14 m3/s of water are pumped from a reservoir of surface elevation30 over a hill of elevation 50. A pump of what power is required to maintain a pressure of 345kPa on the hilltop if the head lost between reservoir and hilltop is 6 m?