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Strength of Mat...

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  • Question 1
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    The volume of a tensile specimen remains constant during plastic deformation under the influence of an axial load and its diameter changes from 2d to 1.5d. The true strain induced in the specimen is

  • Question 2
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    The ratio of bulk modulus to the elastic modulus of a material having Poisson's ratio 0.35 will be ______ . (up to two decimal place) 

  • Question 3
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    A steel rod 3 m long with a cross sectional area of 250 mm2 is stretched between two fixed points. The tensile force is 12000 N at 40°C. Using E = 200 × 103 N/mm2 and α = 11.7 × 10-6 mm/mm°C.

    Calculate the temperature at which the tensile stress in the bar will be 100 N/mm2.

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