2.3 - Job Efficiency and Operating Time
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Practice Questions
Test your understanding with targeted questions
What are the three components of cycle time?
💡 Hint: Think about what actions a bulldozer performs in a single operational cycle.
How does job efficiency affect productivity calculations?
💡 Hint: What fraction do you apply to productivity when calculating it?
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is defined as the total time taken for a bulldozer to complete one full operational cycle?
💡 Hint: Think about what other factors are included within this total time.
True or False: Job efficiency is always 60 minutes in an hour.
💡 Hint: Consider how real-world conditions affect working time.
2 more questions available
Challenge Problems
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A bulldozer is located on a site with a 20% incline. If its output is calculated at flat terrain at 10 cubic meters per hour, estimate the corrected output considering the incline.
💡 Hint: Consider how inclines typically affect bulldozer speed and productivity.
If the cycle time for a bulldozer is 40 minutes, and the job efficiency is revealed to be only 30 minutes in an hour, calculate the productivity assuming a blade load of 2.5 cubic meters.
💡 Hint: Remember to adjust the calculated productivity based on job efficiency to reflect actual working time.
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