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A material which obey’s Hooke’s law is subjected to direct stress σo. At its elastic limit, which of the following statements is true?
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A lift of weight W is lifted by a rope with an acceleration f. If the area of cross-section of the rope is A, the stress in the rope is
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The strain energy stored in a spring when subjected to greatest load without being permanently distorted is called
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A simply supported uniform rectangular bar breadth b, depth d and length L carries an isolated load W at its mid span. The same bar experiences an extension ‘e’ under same tensile load. The ratio of the maximum deflection to the elongation is
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If a composite bar of steel and copper is heated, then the copper bar will be under
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Among the following, which is least elastic?
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The property of a material by which it can be beaten or rolled into plates, is called
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Two bars of different materials are of the same size and are subjected to same tensile forces. If the bars have unit elongations in the ratio of 4:7, then the ratio of modulus of elasticity of the two material is
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Poisson’s ratio for steel within elastic limit ranges from
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The strain energy due to volumetric strain______________
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