Excavator Operator Certification Exam Prep · Question
An excavator operator is preparing a subgrade for a new parking lot with a specified 2% grade for drainage. What is the most effective tool to verify the slope during the grading process?
A laser level provides continuous, accurate grade information, allowing the operator to precisely achieve the specified slope across the entire subgrade, which
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Question: An excavator operator is preparing a subgrade for a new parking lot with a specified 2% grade for drainage. What is the most effective tool to verify the slope during the grading process?
Answer options: ✅ A laser level with a receiver mounted on a grade stick or the excavator arm.
- A measuring tape extended from a known high point to a low point.
- Visually estimating the slope from the operator's cabin.
- A spirit level placed directly on the excavator blade.
Correct answer: A laser level with a receiver mounted on a grade stick or the excavator arm.
Explanation: A laser level provides continuous, accurate grade information, allowing the operator to precisely achieve the specified slope across the entire subgrade, which is essential for proper drainage.
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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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