Tensile strength of a material is obtained by dividing the maximum load during the test by the_________________?

A. area at the time of fractureB. original cross-sectional areaC. average of A. and B.D. minimum area after fractureE. none of the above.

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If the radius of wire stretched by a load is doubled, then its Young’s modulus will be_______________?

A. doubledB. halvedC. become four timesD. become one-fourthE. remain unaffected

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A thin mild steel wire is loaded by adding loads in equal increments till it breaks. The extensions noted with increasing loads will behave as under_________________?

A. uniform throughoutB. increase uniformlyC. first increase and then decreaseD. increase uniformly first and then increase rapidlyE. increase rapidly first and then uniformly

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The ultimate tensile stress of mild steel compared to ultimate compressive stress is__________________?

A. sameB. moreC. lessD. more or less depending on other factorsE. unpredictable

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Modulus of rigidity is defined as the ratio of_________________?

A. longitudinal stress and longitudinal strainB. volumetric stress and volumetric strainC. lateral stress and lateral strainD. shear stress and shear strainE. linear stress and lateral strain

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It equal and opposite forces applied to a body tend to elongate it, the stress so produced is called______________________?

A. internal resistanpeB. tensile stressC. transverse stressD. compressive stressE. working stress

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The unit of Young’s modulus is__________________?

A. mm/mmB. kg/cmC. kgD. kg/cm2E. kg cm2

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Hooke’s law holds good up to____________________?

A. yield pointB. limit of proportionalityC. breaking pointD. elastic limitE. plastic limit

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The stress developed in a material at breaking point in extension is called__________?

A. Breaking stressB. Fracture stressC. Yield point stressD. Proof stress

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A beam of uniform strength is the one in which

A.            B.M. is same throughout the beam         B.            Deflection is same throughout the length C.            Bending stress is same in every section along the longitudinal axis          D.            Shear stress is uniform throughout the…

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