1.1 - Conditions for Validity of Curves
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Practice Questions
Test your understanding with targeted questions
What is the correction factor for a machine that operates for 50 minutes per hour?
💡 Hint: Calculate the time operated divided by total ideal time.
How does soil density affect productivity?
💡 Hint: Consider the extra effort required to move denser soil.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the correction factor for a machine operating under lower job efficiency?
💡 Hint: Think about how operating less time affects the numbers.
True or False: Higher soil density improves productivity.
💡 Hint: Reflect on what makes soil easier or harder to move.
1 more question available
Challenge Problems
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A machine operates for 50 minutes in an hour, moving soil that has a density of 1750 kg/m³. If the ideal curve provides a productivity of 100 cubic meters per hour for 1365 kg/m³ density, find the final adjusted productivity.
💡 Hint: Break the calculations into smaller parts: job efficiency and density adjustments.
Discuss how an operating bulldozer on a -10% slope, in foggy conditions with an average operator, would affect productivity. Provide the expected correction factors.
💡 Hint: Consider how each condition modifies the expected productivity metric.
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