Practice Balance Of Organ Systems (25.6.1) - Open Channel Flow - Fluid Mechanics

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10 questions

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6 sample questions

Question 1.
Define hydraulic gradient lines.
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Think about where the water surface would be.
Question 2.
What does the energy gradient line include?
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Consider what factors contribute to total energy.
3Question 3.
What does the hydraulic gradient line coincide with in open channel flow?
- Pressure head
- Free surface
- Energy head
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Remember the characteristics of open channels.
4Question 4.
True or False: Energy gradient lines never slope downwards.
- True
- False
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Think about energy dissipated through friction.
Question 5.
In a closed hydraulic system, if a pump increases the pressure from 2 bar to 5 bar and the flow rate is 10 L/min, what is the mechanical power input required for this system?
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Use the formula relating power to flow rate and pressure head.
Question 6.
If the energy efficiency of a hydraulic system is calculated to be 75%, and the input energy is 400 J, how much energy is lost?
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Knowing the efficiency can help calculate the output energy, hence the lost energy.

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