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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the formula for conduction resistance?
π‘ Hint: Think about the factors that oppose heat transfer.
Question 2
Easy
What Biot number indicates a valid lumped system approximation?
π‘ Hint: Consider why a low Biot number indicates minimal internal temperature gradients.
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 the equation for conduction resistance?
- R_cond = Ξx/(kA)
- R_cond = kA/Ξx
- R_cond = 1/(hA)
π‘ Hint: Consider which factors increase resistance.
Question 2
True or False: As insulation thickness increases indefinitely, heat loss through a cylinder will always decrease.
- True
- False
π‘ Hint: Think about the relationship between surface area and heat loss.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Given a hollow cylindrical pipe with inner radius 0.1 m, outer radius 0.15 m, and thermal conductivity of 5 W/mK, calculate the heat loss if the temperature difference across the pipe is 50Β°C.
π‘ Hint: Use the cylindrical heat conduction formula.
Question 2
A material has a thickness of 0.1 m, an area of 2 mΒ², and thermal conductivity of 3 W/mK. Determine its conduction resistance and explain its significance in the context of thermal management.
π‘ Hint: Apply the conduction resistance formula.
Challenge and get performance evaluation