A water turbine is to develop 100 MW when running at 93.7 rpm under a head of 20 m with an efficiency of 92%. The runner diameter is to be

7 m. If a water model is to be tested and the maximum test head and flow available are 5 m and 0.9 m/s, estimate: the power to be absorbed by the model if the efficiency is the same, The rotational speed. the scale ratio The model runner diameter