Question

Determine the flow rate of water, if the catchment area of hydroelectric power is 2500 km^2, with an average rainfall of 160cm. the percolation and evaporation losses account for 19%?

(a) 9639.8 M^3/s

(b) 42.8 M^3/s

(c) 859.63 M^3/s

(d) 2342 M^3/s

This question was posed to me in an interview for job.

I need to ask this question from Hydrographs topic in chapter Hydro Electric Power Plant of Energy Engineering

Answer 1

Correct choice is (a) 9639.8 M^3/s

Explanation: Amount of water available for power generation,

   Qa = A X H X (1-y)

       = 2500 X 10^6 X 160/100 (1-0.19)

        = 3.04 X 10^11m^3

  Flow rate of water,

  Q = Qa/(365 X 24 X 60 X 60)

               = (3.04 X 10^-6)/(365 X 24 X 60 X 60)  = 9639.8 M^3/s.