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Question

A tensile test is carried out on a bar of mild steel of diameter 2 cm. The bar yields under a load of 80 kN. It reaches a maximum load of 150 kN and finally breaks at a load of 70 kN. If the diameter of fracture neck is 1 cm. Calculate the ratio of ultimate tensile stress and the breaking point stress.

A
1.80
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B
2.02
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C
0.53
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D
1.55
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