In a hydel power project, 2000 kg of water passes through the turbine every second. Water is falling from a height of 240m above ground. If the power output is 6.4Mw, the efficiency of the power house is (g= 10 ms^(-2))

In a hydel power project, 2000 kg of water passes through the turbine

1.	In a hydel power project, 2000 kg of water passes through the turbine every second. Water is falling from a height of 240m above ground. If the power output is 6.4Mw, the efficiency of the power house is (g= 10 ms^(-2))
Answer» `60%` `75%` `80%` `90%` ANSWER :B