Excavator Operator Certification Exam Prep · Question
What is the function of the 'auto-idle' feature on an excavator?
Auto-idle is a fuel-saving and environmental feature that automatically reduces the engine speed when the machine is temporarily inactive, decreasing fuel consu
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Question: What is the function of the 'auto-idle' feature on an excavator?
Answer options:
- It automatically shifts the machine into neutral when stopped. ✅ It reduces engine RPM to a low idle speed when the controls are not operated for a set period, saving fuel and reducing emissions.
- It automatically engages the parking brake when the operator leaves the cab.
- It increases engine power during heavy digging applications.
Correct answer: It reduces engine RPM to a low idle speed when the controls are not operated for a set period, saving fuel and reducing emissions.
Explanation: Auto-idle is a fuel-saving and environmental feature that automatically reduces the engine speed when the machine is temporarily inactive, decreasing fuel consumption, emissions, and noise.
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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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