NPORS Plant Operator Theory Practice Questions - UK NPORS Plant Operator Theory Test (N001 N202) Exam

Why should plant operators avoid working or parking machinery directly over buried cellar voids or culverts?

Magnetic interference from buried brick arches disables machine GPS guidance systems Hidden underground voids can collapse under concentrated plant weight, dropping the machine into the cavity Subterranean air voids draw hydraulic oil out of machine cylinders by vacuum suction Underground cellars reflect diesel exhaust fumes back into the machine cab intake

Correct Answer:

Hidden underground voids can collapse under concentrated plant weight, dropping the machine into the cavity

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