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At a hydroelectric power plant, water is directed at high
Chapter 1, Problem 12Q(choose chapter or problem)
Problem 12Q
At a hydroelectric power plant, water is directed at high speed against turbine blades on an axle that turns an electric generator. For maximum power generation, should the turbine blades be designed so that the water is brought to a dead stop, or so that the water rebounds?
Questions & Answers
QUESTION:
Problem 12Q
At a hydroelectric power plant, water is directed at high speed against turbine blades on an axle that turns an electric generator. For maximum power generation, should the turbine blades be designed so that the water is brought to a dead stop, or so that the water rebounds?
ANSWER:
Solution 12Q:
We have to determine the most efficient design, for maximum power generation at hydroelectric power plant.
Step 1 of 3
Concept:
Law of conservation of linear momentum: If no external force acts on the system, then the final momentum of the system is equal to the initial momentum of the system. Thus momentum is conserved.