13.24 To determine the characteristics of a pump, a series of experiments are conducted while the pump is working at 800 rpm and the following data is collected. Q (m³/s) 0.00 0.01 0.02 0.03 0.04 0.05 0.06 0.07 h (m) 41 40 39 34 28 17 0 17(%) 0 31 55 71 76 70 50 0 For a certain application we need to select a pump that will deliver 0.04 m³/s of water against a head of 50 m. Possibilities are to use a) the above pump but operated at a rotational speed other than 800 rpm. Find the efficiency of the pump. Find the power required to run it. b) a pump operated at 800 rpm which is geometrically similar to the pump mentioned above. Find the efficiency of this pump and the power required to run it.