Practice Conclusion (22.8) - Fluid Mechanics - Fluid Mechanics

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6 sample questions

Question 1.
Define hydraulic diameter.
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Think of how you measure the perimeter of a noncircular pipe.
Question 2.
Explain the difference between major and minor losses in pipe flow.
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What types of disturbances cause extra friction?
3Question 3.
What is the role of hydraulic diameter in noncircular pipe flow?
- To calculate flow velocity
- To simplify calculations
- To measure pressure loss
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Think about why we need a common measure for different shapes.
4Question 4.
Wall shear stress is highest at the center of the flow in which type of flow?
- True
- False
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Where does it reach zero?
Question 5.
Given a rectangular channel with a width of 5 m and a height of 2 m, find the hydraulic diameter when the channel is half full.
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Think about how the area changes when the channel is half full.
Question 6.
A pipe with a diameter of 0.5 m has a length of 100 m. Calculate the major loss in energy when the flow rate is 0.1 m³/s, using Darcy-Weisbach equation.
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Remember to find the flow velocity using the area of the pipe first.

5 more questions in this section. Enroll free to practise them all.