Practice Hydraulic Head And Efficiencies (3) - Hydraulic Turbines

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9 questions

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6 sample questions

Question 1.
Define gross head.
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Think about the total height of water.
Question 2.
What does net head represent?
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Consider what happens after losing height due to friction.
3Question 3.
What is the difference between gross head and net head?
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Think about the impact of losses on energy conversion.
4Question 4.
True or False: Hydraulic efficiency is the ratio of mechanical power output to the input water power.
- True
- False
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Recall the definitions of different efficiencies.
Question 5.
A hydroelectric power station has a gross head of 200m and a net head of 160m. Given a turbine with a hydraulic efficiency of 90% generating 1500 kW of electrical power, calculate the required water power at the inlet.
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Follow the efficiency formula.
Question 6.
Discuss what could be done to increase the hydraulic efficiency of a turbine. Provide at least three methods in your answer.
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Think about turbine design and operational improvements.

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