Practice Conclusion (4) - Conservation of Momentum - Hydraulic Engineering

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6 sample questions

Question 1.
Define the continuity equation.
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Think about conservation of what?
Question 2.
What does momentum conservation relate to in fluid dynamics?
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What happens to force and velocity?
3Question 3.
What does the continuity equation state?
- Mass flow in equals mass flow out
- Mass can be created
- Only liquids are covered
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Think about fluid entering and leaving a system.
4Question 4.
Is momentum conservation a basic principle in fluid mechanics?
- True
- False
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Does it relate energy to motion?
Question 5.
A pipe tapers from 0.5 m to 0.25 m. If water flows at 1 m/s in the larger diameter, what is the velocity in the smaller diameter?
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Think about how areas compare.
Question 6.
If water flows through a horizontal pipe, how would you calculate the force applied if the water exits at 10 L/min and impacts a wall, assuming it comes to a complete stop?
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Remember to relate mass flow and velocity to force.

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