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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is rolling resistance?
💡 Hint: Think about how different surfaces impact moving vehicles.
Question 2
Easy
Why might a crawler machine be selected over a wheeled machine?
💡 Hint: Consider the type of terrain where each machine performs best.
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 rolling resistance influenced by?
- Terrain type
- Contract specifications
- Both
💡 Hint: Think about what aspects affect machinery performance.
Question 2
True or False: Higher altitude generally results in better machinery performance due to less air density.
- True
- False
💡 Hint: Consider how altitude changes affect engine operation.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Calculate the power requirement for a machine moving over a rocky surface. If the rolling resistance coefficient is 0.05 and the weight of the truck is 10,000 kg, how much power is needed to maintain a speed of 10 m/s?
💡 Hint: Remember to calculate force using the rolling resistance coefficient and the weight.
Question 2
You have two machines: a wheeled loader rated at 150 horsepower and a crawler loader at 200 horsepower. The wheeled loader struggles to maintain speed on a muddy terrain while the crawler performs efficiently. Discuss the implications of machine selection based on rolling resistance.
💡 Hint: Think about the relationship between horsepower and terrain conditions.
Challenge and get performance evaluation