1. The problem statement, all variables and given/known data Discuss the suitability for generating electricity or directly driving mechanical machinery. High breast water wheel: Head/m 4.65 Flow rate*/m3 s−1 1.0 Power/kW 39.4 Diameter/m 7.0 Width or height/m 2.5 Mass/kg 14 143 Power-to-weight ratio/W kg−1 2.8 This leads to the following additional data... Torque = 72572 Nm Angular momentum = 72572 Nms Rotational kinetic energy = 60.80 kJ Victor water turbine: Head/m 5.55 Flow rate*/m3 s−1 0.8 Power/kW 36.6 Diameter/m 0.76 Width or height/m 0.7 Mass/kg 534 Power-to-weight ratio/W kg−1 68.5 This leads to the following additional data... Torque = 807.5 Nm Angular momentum = 807.5 Nms Rotational kinetic energy = 16.91kJ 2. Relevant equations - 3. The attempt at a solution I'm thinking that a power output of 35-40kW (i.e. both of them) is suitable for small-scale electricity generation. However, to directly drive industrial machinery a high torque and angular momentum would be required, hence only the high breast water wheel is suitable for that task. There are 6 marks for this question, which seems rather a lot for such hand-wavery. Can anyone point out what I can do for greater detail, or where my logic may have gone wrong? Many thanks in advance!