In a hydroelectric power plant, water at 20°C is supplied to the turbine at a rate of 0.55 m³/s through a 200-m-long, 0.35-m- diameter cast iron pipe. The elevation difference between the free surface of the reservoir and the turbine discharge is 140 m, and the combined turbine-generator efficiency is 75 percent. Disregarding the minor losses because of the large length-to- diameter ratio, determine the electric power output of this plant. The density and dynamic viscosity of water at 20°C are p= 998 kg/m3 and u= 1.002 × 10¬3 kg/m-s. The roughness of the cast iron pipes is ɛ = 0.00026 m. The electric power output of this plant is |kW.

In a hydroelectric power plant, water at 20°C is supplied to the turbine at a rate of 0.55 m³/s through a 200-m-long, 0.35-m- diameter cast iron pipe. The elevation difference between the free surface of the reservoir and the turbine discharge is 140 m, and the combined turbine-generator efficiency is 75 percent. Disregarding the minor losses because of the large length-to- diameter ratio, determine the electric power output of this plant. The density and dynamic viscosity of water at 20°C are p= 998 kg/m3 and u= 1.002 × 10¬3 kg/m-s. The roughness of the cast iron pipes is ɛ = 0.00026 m. The electric power output of this plant is |kW.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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A fluid is a substance that is continuously deformed by the application of shear stress. The rate of deformation of a fluid depends on its viscosity. The fluid tries to flow when it interacts with some other system.

Question

In a hydroelectric power plant, water at 20°C is supplied to the turbine at a rate of 0.55 m/s through a 200-m-long, 0.35-m-
diameter cast iron pipe. The elevation difference between the free surface of the reservoir and the turbine discharge is 140 m,
and the combined turbine-generator efficiency is 75 percent. Disregarding the minor losses because of the large length-to-
diameter ratio, determine the electric power output of this plant. The density and dynamic viscosity of water at 20°C are p= 998
kg/m and u= 1.002 × 10-3 kg/m-s. The roughness of the cast iron pipes is ɛ = 0.00026 m.
The electric power output of this plant is
kW.

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