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MEO Class IV – EK-Motor : 2023/OCT/01 – 2023/MAY/01 – 2024/APR/09 – 2025/JAN/09

Question

Q9. Compare the desirable qualities of the lubricating oil selected for each of the following duties:

a) Auxiliary diesel engines. (4)

b) Stern tube bearings. (4)

c) Refrigeration compressors. (4)

d) Gear case of purifier. (4)

Give reasons for the differing properties of the oils recommended for these four purposes.

Asked in Year/Month/Ques No.

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