Excavator Operator Certification Exam Prep · Question
Which component in an open-centre hydraulic system is responsible for diverting excess oil flow back to the reservoir when implements are not being actuated?
In an open-centre hydraulic system, when the control valve is in its neutral position (implements not being actuated), the control valve spool is positioned to
Start free practice for Excavator Operator Certification Exam Prep
263 questions · no signup required · 40 free questions per day
Question: Which component in an open-centre hydraulic system is responsible for diverting excess oil flow back to the reservoir when implements are not being actuated?
Answer options:
- The pressure relief valve. ✅ The control valve spool.
- The hydraulic pump.
- The accumulator.
Correct answer: The control valve spool.
Explanation: In an open-centre hydraulic system, when the control valve is in its neutral position (implements not being actuated), the control valve spool is positioned to allow hydraulic oil to flow through the valve directly back to the reservoir, bypassing the actuators. The pressure relief valve limits maximum pressure, the pump creates flow, and an accumulator stores energy.
Start free practice for Excavator Operator Certification Exam Prep
263 questions · no signup required · 40 free questions per day
More about Excavator Operator Certification Exam Prep
Related Questions
- 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?
- According to IUOE best practices, what is the LAST thing an operator should do before leaving the excavator's
- Travel on slope — bucket should be:
More for Excavator Operator Certification Exam Prep candidates
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?
Ready to practice?
Free, no signup required. Build a wrong-question list as you go.
Start Free Excavator Operator Certification Exam Prep Practice →Related courses
Other Canadian certifications candidates often prepare for alongside this one.