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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define required power in the context of earthmoving operations.
💡 Hint: Think about what the machine needs to do in order to move.
Question 2
Easy
What type of resistance is faced by wheels rolling over a surface?
💡 Hint: It relates to the friction between the wheel and the surface.
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 required power?
- Power needed for project completion
- Power needed to overcome resistive forces
- Total engine power available
💡 Hint: Consider the factors involved in movement.
Question 2
Rolling resistance affects the cost of operation.
- True
- False
💡 Hint: Think about how power impacts costs.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A loader with a gross weight of 30,000 kg experiences a rolling resistance of 50 kg per ton when unloading materials from a construction site for a distance of 500 meters. Calculate the tractive effort required.
💡 Hint: Use the total weight multiplied by the rolling resistance value.
Question 2
If a typical truck tire sinks into a soft surface causing an additional resistance of 10 kg per ton for each inch of penetration, how would you adjust your required power estimation knowing the load is 25 tons and the tire sinks by 6 inches?
💡 Hint: Calculate the total resistance by considering all factors.
Challenge and get performance evaluation