MECHANICAL ENGINEERING JOB INTERVIEW QUESTIONS by SHUBHAM N. KINGE:- 1.)Can Poisson Ratio be Negative or zero? Ans.: Poissons ratio for a cork is almost zero. Yes Poissons ratio can be negative. Such materials are called as auxetics. E.g. Human ligaments. 2.)What is neutral axis? Ans.: The neutral axis of the cross-section a beam is that axis at which the bending stress is zero. 3.)Differentiate between Open system, closed system, and isolated system? Ans.: In open system both mass and energy transfer takes place. In closed system energy transfers but mass does not transfer across the boundary. In Isolated system neither mass, nor energy transfer takes place across the boundary. 4.)State Zeroth Law of Thermodynamics. Ans.: The Zeroth law of thermodynamics states that if two separate thermodynamic systems are each in thermal equilibrium with a third, then all three are in thermal equilibrium with each other..
Posted on: Sun, 09 Mar 2014 12:28:37 +0000
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