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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define shear stress in your own words.
💡 Hint: Think of how fluids slide over surfaces.
Question 2
Easy
What is the purpose of the Reynolds number?
💡 Hint: Recall its significance in flow characterization.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What does the Reynolds number indicate in fluid flow?
- It determines drag force.
- It predicts flow type.
- It measures pressure.
💡 Hint: Relate it back to flow characteristics.
Question 2
True or False: Viscosity decreases with increasing temperature.
- True
- False
💡 Hint: Think about how heat affects fluids.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A model yacht in a wind tunnel has a drag coefficient of 0.4, frontal area of 0.5 m², and experiences a wind speed of 15 m/s. Calculate the drag force. Consider air density as 1.225 kg/m³.
💡 Hint: Use the drag force formula and substitute the values carefully.
Question 2
For a sphere with a diameter of 0.5 m in a laminar flow at 1 m/s and a density of 900 kg/m³, calculate the Reynolds number given the dynamic viscosity of 0.001 Pa·s.
💡 Hint: Ensure you've made a proper unit conversion to maintain consistency!
Challenge and get performance evaluation