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Use of very thin lubricating oil in lubrication system causes ___________

(a) Low of pressure

(b) Less engine speeds

(c) Higher fuel consumption

(d) High thermal efficiency

This question was addressed to me in an internship interview.

This interesting question is from Principles of Forced Feed System in section Lubrication System and Tractor’s Classification of Farm Machinery

1 Answer

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Best answer
Right option is (a) Low of pressure

For explanation I would say: Low oil pressure can result due to: weak relief valve spring, worn oil pumps, cracked oil line, obstruction in oil lines, very thin oil, worn out bearings.

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