Practice Bernoulli’s Principle (9.4) - MECHANICAL PROPERTIES OF FLUIDS

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6 sample questions

Question 1.
What does Bernoulli’s Principle express?
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Focus on the conservation of energy.
Question 2.
Define pressure energy.
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Consider how pressure influences motion.
3Question 3.
What happens to the speed of a fluid in a narrower section of a pipe?
- It decreases
- It remains constant
- It increases
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Think about how fluid volume conservation works.
4Question 4.
Is Bernoulli's Principle applicable to turbulent flows?
- True
- False
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Consider the role of friction in fluid dynamics.
Question 5.
A pipe carrying water has a diameter of 10 cm at point A and 5 cm at point B. If the pressure at point A is 200 kPa and the height difference between points A and B is 2 m, calculate the pressure at point B.
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Use the equation: P1 + 0.5ρv1² + ρgh1 = P2 + 0.5ρv2² + ρgh2.
Question 6.
A water tank is open to the atmosphere and has a hole at the bottom. If the hole has a diameter of 2 cm, calculate the speed of efflux using Torricelli's law.
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Consider the height of the water column responsible for this speed.

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