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Tag «Oral Preparation»

COC ORAL EXAM PREPARATION (PART- I) – MACHINERY

Source: MAN Diesel (MAN-B&W-K98MC) Cylinder liner wears: 1) Normal frictional wear: Due to metal to metal contact with high surface asperities under marginal lubrication condition. 2) Abrasive wear: Due to presence of hard foreign particles from fuel, LO, and air. 3) Corrosive wear:Due to H₂SO₄ acid attack owing to sulphur within fuel. Only 0.1% of sulphur …