When the pump (figure) delivers 220m^3/h of water at 20°C from the reservoir, the total frictional head loss is 5 m. The flow is discharged to the atmosphere through a nozzle. Estimate the power in kilowatts that the pump delivers to the water.

The Head -flowrate curve for a centrifugal pump is given by: HP = 28 -30Q2 Where, HP is in meter and Q is in m3/s . This pump is used to pump water for a system with the following (H-Q) curve: HS = 8 + 150Q2 Where, HS is in meter and Q is in m3/s . What is the resulting flow rate in the system if three pumps are used in series? (a) 0.56 m^3/s (b) 0.48 m^3/s (c) 0.33 m^3/s (d) 0.36 m^3/s HINT: what is the resulting Flow-rate in the system if three pumps are used in series ? Choose correct option above

3.

A centrifugal pump at peak efficiency operates at 700RPM and provides 30ft head for a flow rate of 100gpm. What will be the flow rate and head at peak efficiency if the pump speed is increased to 2500RPM?