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The quantity of water available for a hydroelectric station is 273 m3/s under a head...

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Mechanical Engineering

The quantity of water available for a hydroelectric station is 273 m3/s under a head of 18 m. Assuming the speed of the turbines to be 150 rpm and the efficiency 82%. determine the least number of identical machines that be needed if (i) Francis turbines whose Ns must not exceed 395, (ii) Kaplan turbines whose Ns must not exceed 690 are chosen, What would be the individual power output of the unit in the cases [ i. Francis P = 9,532 kW, no. of turbines = 5, ii. Kaplan P = 29087 kW, no. = 2 ]

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