Water falls from a height of 60   m at the rate of 15   kg   s - 1 to operate a turbine. The losses due to frictional force are 10 % of the input energy. How much power is generated by the turbine? g = 10   m   s - 2 )

Step-by-step solution

Change in potential energy of water per second = 15 × g × 60 = 9000   J   s - 1 Energy remaining per second after loss = 90 % of 9000   J   s - 1 = 90 100 × 9000 = 8100   J   s - 1 = 8 . 1   kW