Excavator Operator Certification Exam Prep · Question
Which of the following hydraulic components is responsible for relief of excessive pressure in the main hydraulic circuit, protecting other components from damage?
A relief valve is specifically designed to open and bypass fluid when pressure exceeds a preset limit, thereby protecting the system. A directional control valv
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Question: Which of the following hydraulic components is responsible for relief of excessive pressure in the main hydraulic circuit, protecting other components from damage?
Answer options:
- Directional control valve. ✅ Relief valve.
- Hydraulic filter.
- Hydraulic accumulator.
Correct answer: Relief valve.
Explanation: A relief valve is specifically designed to open and bypass fluid when pressure exceeds a preset limit, thereby protecting the system. A directional control valve directs fluid flow, a hydraulic filter cleans the fluid, and a hydraulic accumulator stores energy.
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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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