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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the first step in the refrigeration cycle?
💡 Hint: Think of how pressure increases.
Question 2
Easy
What happens during condensation?
💡 Hint: It cools down and changes state.
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 primary function of a refrigerator?
- To cool food
- To heat food
- To freeze food
💡 Hint: Think about its main use.
Question 2
True or False: The expansion phase reduces the temperature of the refrigerant.
- True
- False
💡 Hint: Consider what happens during this phase.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
If a refrigerator has a coefficient of performance (COP) of 3, how much work is done if it removes 600 J of heat?
💡 Hint: Think about the definition of COP.
Question 2
Consider a system where the refrigerant does not effectively absorb heat during evaporation. What could be some potential effects on the refrigerator's efficiency?
💡 Hint: Think about heat absorption and cooling function.
Challenge and get performance evaluation