MECHANICAL ENGINEERING JOB INTERVIEW QUESTIONS:- 1.)Define surface tension ? Ans: Surface tension of a liquid is the work that must be done to bring enough molecules from inside the liquid to the surface to form one new unit area of that surface. (Its unit is Nm/m2 or N/m). 2.)State Archimedes principle. Ans: Any weight, floating or immersed in a liquid, is acted upon by a buoyant force equal to the weight of the liquid displaced. This force acts through the center of buoyancy, i.e. the e.g. of the displaced liquid. 3.). Distinguish between a jig and fixture. Ans: Jig clamps and locates parts in positive manner and guides cutting tools (drills, reamers, taps etc). Fixture is bolted or fixed securely to the machine table so that work is in correct location ship to the cutter. Fixtures are used for mass milling, turning and grinding, etc. 4.). In which type of flow the stream lines, streak lines and path lines are identical ? Ans: In steady flow.
Posted on: Fri, 07 Mar 2014 14:14:19 +0000
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