Practice question

Why is it important to ensure that the air compressor governor cut-out pressure is functioning correctly in a heavy vehicle?

To prevent tyre over-inflation
To prevent the air system pressure from rising to a dangerous level by stopping the compressor at a set limit (usually 120-130 psi)
To regulate fuel flow to the engine
To assist the speed limiting device

Answer: B — To prevent the air system pressure from rising to a dangerous level by stopping the compressor at a set limit (usually 120-130 psi)

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