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The average rate inflow during 12 months for river are as follows:

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i) Plot hydrograph and find average flow

ii) Draw flow duration curve and,

iii) Find power developed in MW under head of 155m if overall efficiency is 87%. Take each month of 30 days.

1 Answer
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Mean discharge flow or Average flow =$\frac{(Total flow for time duration)}{(Total number of months)}$

= $\frac{12600}{12}$

= 1050 cu.m/ sec

Average flow = $\frac{1050}{30}$ = 35 cu. m /sec

Average power generated at side in kW = $\frac{ρgHQ Ƞ_g}{1000}$

= $\frac{(1000 ×9.81 × 155 × 35 ×0.87 )}{1000}$

= 46300.75 kW

= 46.30 MW

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