A hydroelectric plant has a reservoir of area 2 sq. kilometers and a capacity 5 million cubic meters. The net head of water at the turbine is 50 m. If the efficiency of the generator is 95% and the total energy generated is 315.36*10° MW Calculate: 1- The turbine efficiency 2- If a load of 15MW has been supplied for 2 days, what will be the new head of water?

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Maximum power transfer theorem

A resistive load will consume maximum power from a network when the load resistance is equal to the resistance of the network as viewed from the open-circuit terminals, with all energy sources removed leaving only the internal resistances. Physicist Moritz von Jacobi introduced the maximum power transfer theorem in 1940. Therefore, this theorem is also known as Jacobi's law.