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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What happens to air density as altitude increases?
💡 Hint: Consider what happens to air when you go higher.
Question 2
Easy
What is the purpose of a turbocharger?
💡 Hint: Think about what a turbocharger does to air.
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 relationship between altitude and engine horsepower?
- Horsepower increases
- Horsepower decreases
- Horsepower remains constant
💡 Hint: Consider how air density affects combustion.
Question 2
Turbochargers are used to:
- True
- False
💡 Hint: Remember the function of a turbocharger.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
If an earthmover has a standard horsepower of 150 at sea level, calculate its expected horsepower at a height of 9,000 feet where the air density drops to about 70% of that at sea level. Show your calculations.
💡 Hint: Use the percentage reduction in air density to assess horsepower.
Question 2
Discuss the implications of using a machine rated for sea level performance at high altitude without adjustment for conditions. Highlight three potential issues.
💡 Hint: Think about the engine's air-fuel mixture and performance.
Challenge and get performance evaluation