The turbines in a hydroelectric plant are fed by water falling from a 50 m height. Assuming 91% efficiency for conversion of potential to electrical energy, and 8% loss of the resulting power in transmission, what is the mass flow rate of water required to power a 200 W light bulb
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The turbines in a hydroelectric plant are fed by water falling from a 50 m height. Assuming 91% efficiency for conversion of potential to electrical energy, and 8% loss of the resulting power in transmission, what is the mass flow rate of water required to power a 200 W light bulb
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- In an hydroelectric plant, 100 m^3/s of water flows from elevation of 120 m to a turbine, where electric power is generated. The overall efficiency of the turbine-generator is 80 percent Disregarding frictional losses in piping. Estimate the electric power output of this plant.Electric power is to be generated by installing a hydraulic turbine—generator at a site 120 m below the free surface of a large water reservoir that can supply water steadily at a rate of 930 kg/s. If the mechanical power output of the turbine is 850 kW and the electric power generation is 770 kW, determine the turbine efficiency and the combined turbine— generator efficiency of this plant. Neglect losses in the pipes.Electric power is to be generated by installing a hydraulic turbine–generator at a site 110 m below the free surface of a large water reservoir that can supply water steadily at a rate of 900 kg/s. If the mechanical power output of the turbine is 800 kW and the electric power generation is 750 kW, determine the turbine efficiency and the combined turbine–generator efficiency of this plant. Neglect losses in the pipes.
- A hydraulic turbine is used to generate power by using water in a dam. The elevation difference between the free surface stream and the downstream of the dam is 120 m. The water is supplied to the turbine at a rate of 150 kg/s. if the shaft power output from the turbine is 155 KW, the efficiency of the turbine isElectric power is generated in the hydroelectric power plant with a turbine-generator system, which has a water input of 45 m3 per second from a height of 53 meters and operates with 73% efficiency. Calculate the electrical power generated in the plant since the friction loss in the pipes is neglected. A) 1,7 MW B) 17 MW C) 32 MW D) 171 MW E) 23 MWIn a hydroelectric power plant as shown in the figure, 100 m3/s of water flows froman elevation of 130 meters to the turbine, where electric power is generated. The overallefficiency of the turbine-generator is 80%. Disregarding frictional loss in piping, estimate the electric power output of this plant.
- Include a free body diagram 4. A hydraulic turbine is used to generate power by using water in a dam. The elevation difference between the free surface stream and the downstream of the dam is 120 m. The water is supplied to the turbine at a rate of 150 kg/s. if the shaft power output from the turbine is 155 KW, the efficiency of the turbine isA.0.77B. 0.88C. 0.80D. 0.85Electric power is to be generated by installing a hydraulic turbine-generator at a site 70m below the free surface of a large water reservoir that can supply water at a rate of 1500kg/s steadily. If the mechanical power output of the turbine is 800kW and the electric power generation is 750kW, determine the turbine efficiency and the combined turbine-generator efficiency of this plant. Neglect losses in the pipes.In a hydroelectric power plant, water at 20°C is supplied to the turbine at a rate of 0.6 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 80 percent. Disregarding the minor losses because of the large length-to-diameter ratio, determine the electric power output of this plant.
- Electric power is to be generated by installing a hydraulic turbine–generator at a site 70 m below the free surface of a large water reservoir that can supply water at a rate of 1500 kg/s steadily (Fig. 2–60). If the mechanical power output of the turbine is 800 kW and the electric power generation is 750 kW, determine the turbine efficiency and the combined turbine–generator efficiency of this plant. Neglect losses in the pipes.Water is pumped from a large lower reservoir to a higher reservoir. Someone claims that if the head loss is negligible, the required pump head is equal to the elevation difference between the free surfaces of the two reservoirs. Do you agree?The design of a new dam reveals that a water head of 10 meter and water flow rate of 100 cubic meter per second (m3/s) can be supplied for electricity generation. What kind of turbines would you recommend for the electric power generation?