3) An aluminium alloy specimen of gauge length 75 mm and of diameter 11.28 mm was...

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3) An aluminium alloy specimen of gauge length 75 mm and of diameter 11.28 mm was subjected to a tensile test, with these results: Load (kN) Daya (kN) Extension (mm) 0 2 6.5 11.5 13.6 16 18 19 20.5 19 0 0.012 0.039 0.069 0.080 0.107 0.133 0.158 0.225 0.310 i. Pemanjangan (mm) Plot the engineering load-extension curve. ii. Calculate the modulus of elasticity. iii. Calculate the ultimate tensile strength. iv. Calculate the percentage elongation. 3) An aluminium alloy specimen of gauge length 75 mm and of diameter 11.28 mm was subjected to a tensile test, with these results: Load (kN) Daya (kN) Extension (mm) 0 2 6.5 11.5 13.6 16 18 19 20.5 19 0 0.012 0.039 0.069 0.080 0.107 0.133 0.158 0.225 0.310 i. Pemanjangan (mm) Plot the engineering load-extension curve. ii. Calculate the modulus of elasticity. iii. Calculate the ultimate tensile strength. iv. Calculate the percentage elongation.