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Classification of Forging - I

The true stra...

Question

The true strain for a low carbon steel bar which is tripled in length by forging is

A

0.693

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B

-0.693

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C

1.098

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D

-1.098

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Solution

The correct option is C 1.098
$True strain = l n (\frac{L}{L_{0}})$
$∴ \in_{T} = l n (\frac{3 L_{0}}{L_{0}}) = l n 3 = 1.098$

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