Excavator Operator Certification Exam Prep · Question
A rigging plan for a lift involving multiple slings at different angles to the vertical specifies a sling angle of 45 degrees. How does this angle affect the tension in each sling compared to a vertical (90-degree) sling angle?
As the sling angle to the vertical decreases (i.e., slings become more horizontal), the tension or stress on each sling dramatically increases to support the sa
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Question: A rigging plan for a lift involving multiple slings at different angles to the vertical specifies a sling angle of 45 degrees. How does this angle affect the tension in each sling compared to a vertical (90-degree) sling angle?
Answer options:
- The tension in each sling decreases.
- The tension in each sling remains the same.
- The total lifting capacity is doubled. ✅ The tension in each sling increases significantly.
Correct answer: The tension in each sling increases significantly.
Explanation: As the sling angle to the vertical decreases (i.e., slings become more horizontal), the tension or stress on each sling dramatically increases to support the same load. This is a critical consideration in rigging calculations.
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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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