Loader Operator Certification Exam Prep · Question
A wheel loader is performing Y-pattern loading in a quarry. The loader has a 3.5 m³ bucket capacity. It takes approximately 45 seconds to complete one full loading cycle (dig, travel, dump, return). If the target dump truck has a capacity of 20 m³, what is the estimated time to load one dump truck, assuming optimal operation?
To load a 20 m³ truck with a 3.5 m³ bucket, approximately 20 / 3.5 = 5.71, or 6 bucket passes are required (always round up). With each pass taking 45 seconds,
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Question: A wheel loader is performing Y-pattern loading in a quarry. The loader has a 3.5 m³ bucket capacity. It takes approximately 45 seconds to complete one full loading cycle (dig, travel, dump, return). If the target dump truck has a capacity of 20 m³, what is the estimated time to load one dump truck, assuming optimal operation?
Answer options:
- Approx. 3 minutes and 30 seconds ✅ Approx. 4 minutes and 30 seconds
- Approx. 2 minutes and 45 seconds
- Approx. 5 minutes and 15 seconds
Correct answer: Approx. 4 minutes and 30 seconds
Explanation: To load a 20 m³ truck with a 3.5 m³ bucket, approximately 20 / 3.5 = 5.71, or 6 bucket passes are required (always round up). With each pass taking 45 seconds, the total loading time is 6 passes * 45 seconds/pass = 270 seconds, which is equal to 4 minutes and 30 seconds. This calculation is essential for production planning.
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Question explanations
- An operator has just attached a new set of pallet forks using the machine's quick coupler. After initially tes
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