Excavator Operator Certification Exam Prep · Question
An operator is digging a trench on a 15-degree slope. To maintain excavator stability, which of the following is the most critical action?
When operating on a slope, minimizing boom extension and avoiding sudden movements significantly reduces the risk of instability, especially when operating acro
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Question: An operator is digging a trench on a 15-degree slope. To maintain excavator stability, which of the following is the most critical action?
Answer options:
- Ensure the excavator is positioned with the tracks oriented perpendicular to the slope.
- Always dig uphill, keeping the heaviest part of the machine pointed downslope. ✅ Minimize the boom extension and avoid sudden movements when operating across the slope.
- Use the highest engine RPM to provide maximum hydraulic power for trenching.
Correct answer: Minimize the boom extension and avoid sudden movements when operating across the slope.
Explanation: When operating on a slope, minimizing boom extension and avoiding sudden movements significantly reduces the risk of instability, especially when operating across the slope. Positioning the tracks perpendicular to the slope should generally be avoided, and operating uphill or downhill depends on the specific task and machine capabilities for maximizing stability.
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Question explanations
- During a final inspection of an excavator, prior to beginning work, an operator notices significant play in th
- An excavator operator is preparing to dig a trench in cohesive soil. To achieve maximum breakout force, what a
- Which control typically governs the arm (or dipper arm) movement for an excavator?
- What condition might require sloping or shoring of a trench less than 1.2 meters (4 feet) deep?
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