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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What defines forced convection?
π‘ Hint: Think about how fans or pumps work.
Question 2
Easy
What dimensionless number indicates flow regime?
π‘ Hint: It determines if the flow is laminar or turbulent.
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 is forced convection?
- Fluids move due to external energy
- Fluids move due to internal energy
- Fluids are at rest
π‘ Hint: Consider how fans are used to circulate air.
Question 2
True or False: In forced convection, thermal development does not occur.
- True
- False
π‘ Hint: Remember the definitions of forced convection.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A circular duct has an internal diameter of 0.1 m and an air flow rate that results in a Reynolds number of 3200. Calculate the Nusselt number assuming turbulent flow with a constant wall temperature.
π‘ Hint: Make sure to understand how the Prandtl number affects the results.
Question 2
For a heat exchanger experiencing forced convection, the wall temperature is 75Β°C and the bulk temperature of the fluid entering is 25Β°C. Given the heat transfer coefficient of 50 W/mΒ²Β·K, calculate the heat transfer rate for a surface area of 2 mΒ².
π‘ Hint: Remember to calculate ΞT correctly.
Challenge and get performance evaluation