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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the primary purpose of pin fins?
π‘ Hint: Think about how we can enhance cooling.
Question 2
Easy
What is the governing equation for heat transfer through pin fins?
π‘ Hint: It includes terms related to temperature and heat transfer coefficients.
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 formula for fin efficiency?
- Ξ· = Actual/Max
- Ξ· = Max/Actual
- Ξ· = Actual * Max
π‘ Hint: Remember, itβs a ratio.
Question 2
True or False: The fin with an insulated tip has no heat loss.
- True
- False
π‘ Hint: Consider what insulation does.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A pin fin with an insulated tip is 0.5 m long and has a diameter of 0.01 m. If the thermal conductivity is 200 W/mΒ·K and the convection coefficient is 25 W/mΒ²Β·K, calculate its maximum heat transfer efficiency.
π‘ Hint: You need to determine the total heat transfer based on the parameters given.
Question 2
If a pin fin cools a component from 100Β°C to 50Β°C over a period, and you know the heat transfer at the tip, how would you find the efficiency of the pin fin?
π‘ Hint: Evaluate how much energy is actually passing through versus what could ideally pass through.
Challenge and get performance evaluation