Heavy Equipment Operator Certification Exam Prep · Question
When operating an excavator on a slope, which action will LEAST affect the machine's centre of gravity, and thus its stability?
Tracking uphill with the boom aligned with the tracks maintains the machine's weight distribution along its longest axis, minimizing the shift in the centre of
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Question: When operating an excavator on a slope, which action will LEAST affect the machine's centre of gravity, and thus its stability?
Answer options:
- Extending the boom and dipper stick downhill with a loaded bucket.
- Swinging the upper structure 90 degrees to the uphill side.
- Lowering the boom and bucket closer to the ground. ✅ Tracking the machine uphill with the boom aligned with the tracks.
Correct answer: Tracking the machine uphill with the boom aligned with the tracks.
Explanation: Tracking uphill with the boom aligned with the tracks maintains the machine's weight distribution along its longest axis, minimizing the shift in the centre of gravity compared to extending loads or swinging the superstructure.
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