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______ is used to find the viscosity of the lubricating oil.(a) loss due to evaporation(b) viscometer(c) moisture test(d) NoneThe question was posed to me at a job interview.This question is from Testing of Lubricants in chapter Lubrication and Lubricants of Automotive Engine Design

Answer»

The correct choice is (a) loss DUE to evaporation

Explanation: Viscosity is the friction between two surfaces of the liquid. Viscometer is used to determine the viscosity of the LUBRICATING oil. The viscometer is based on the principle that a viscous liquid resist flow, exhibiting a decreasing pressure ALONG the LENGTH of the slit.



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