Excavator Operator Certification Exam Prep · Question
What is the primary hazard of static electricity buildup when refuelling an excavator?
Static electricity can create a spark, which, in the presence of flammable fuel vapours, can lead to a severe fire or explosion. Proper grounding and bonding du
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Question: What is the primary hazard of static electricity buildup when refuelling an excavator?
Answer options:
- Damage to the fuel pump.
- Slight electric shock to the operator. ✅ Fire or explosion from a spark igniting fuel vapours.
- Reduced fuel efficiency.
Correct answer: Fire or explosion from a spark igniting fuel vapours.
Explanation: Static electricity can create a spark, which, in the presence of flammable fuel vapours, can lead to a severe fire or explosion. Proper grounding and bonding during refuelling are critical to prevent this.
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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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