Excavator Operator Certification Exam Prep · Question
Which component is designed to prevent hydraulic system overpressure and protect components from damage?
The pressure relief valve is specifically designed to open and divert hydraulic fluid back to the tank when system pressure exceeds a predetermined limit, prote
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Question: Which component is designed to prevent hydraulic system overpressure and protect components from damage?
Answer options:
- Hydraulic reservoir
- Directional control valve ✅ Pressure relief valve
- Hydraulic pump
Correct answer: Pressure relief valve
Explanation: The pressure relief valve is specifically designed to open and divert hydraulic fluid back to the tank when system pressure exceeds a predetermined limit, protecting other components. The hydraulic reservoir stores the fluid, directional control valves direct flow, and the hydraulic pump creates flow, but none directly regulate overpressure.
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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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