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The sharp increase in the cost of energy in recent years has led to a strong demand for more efficient electric generation and the evaluation of 1% of efficiency has become higher than of the price of generating equipment. Efficiency can be gained by replacing or modification one or several turbines components as well as improvement in hydraulic structures. In this paper Efficiency enhancement is currently in the centre of interesting of many researchers and several studies and experiment havedoi:10.4236/wjm.2012.21004 fatcat:h5qmnr7ww5gx7he6y4tvudqf54