A lake of area 500km2 is fed from a drainage area of 6000km2 including the lake. The level of water in the lake is 450m at the beginning of the month and 450.5m at the end (720 h). Over this period the total rainfall is 15cm with 30% loss due to evaporation. The only out let from the lake is a river which supplies a hydro-station, the head above the turbine being 65m. The power loss due to friction is 4% of the total in the river .The overall efficiency of turbine –generator is 90% a) Determine the total quantity of water available in the period of the month. b) Determine the average flow rate of water from the lake through the outlet. c) Determine the installed capacity of the statio
A lake of area 500km2 is fed from a drainage area of 6000km2 including the lake. The level of water in the lake is 450m at the beginning of the month and 450.5m at the end (720 h). Over this period the total rainfall is 15cm with 30% loss due to evaporation. The only out let from the lake is a river which supplies a hydro-station, the head above the turbine being 65m. The power loss due to friction is 4% of the total in the river .The overall efficiency of turbine –generator is 90% a) Determine the total quantity of water available in the period of the month. b) Determine the average flow rate of water from the lake through the outlet. c) Determine the installed capacity of the statio
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A lake of area 500km2 is fed from a drainage area of 6000km2 including the lake. The level of water in the lake is 450m at the beginning of the month and 450.5m at the end (720 h). Over this period the total rainfall is 15cm with 30% loss due to evaporation. The only out let from the lake is a river which supplies a hydro-station, the head above the turbine being 65m. The power loss due to friction is 4% of the total in the river .The overall efficiency of turbine –generator is 90%
a) Determine the total quantity of water available in the period of the month.
b) Determine the average flow rate of water from the lake through the outlet.
c) Determine the installed capacity of the station.
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