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Q3: When a mild steel rod was tested under tension, it was observed that a load...

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Civil Engineering

Q3: When a mild steel rod was tested under tension, itwas observed that a load of 8 kN causes an
extension of 0.024 cm in the rod. The maximum load carried by thesteel rod was observed to be
20 kN and the load beyond which stress is not proportional tostrain was noted as 10 kN. When the
specimen breaks, the elongation in the rod measured was 5.25 cm andthe diameter at the fracture
observed was 0.455 cm. What will be the length and diameter of thesteel rod if the total
elongation of the steel rod was found to be 25% and the area ofcontraction at fracture estimated
was 12%? Based on the test results, determine the valuesfor the stress corresponding to limit of
proportionality, modulus of elasticity of the material and theultimate stress developed due to
tension.

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