GATE 2021 Metallurgy Solution Part-2// Metallurgy Core part-1

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[@anandkris2383]

Sir in a true stress strain curve, the curve is continuously increasing at its uts value whereas the slope is zero at uts value for an engineering stress strain curve. Sir the load will be less only for a true stress at last stages as the area decreases the stress value is increased. So (1) must be correct for the last question.

[@saikirankhamgaonkar3044]

At UTS necking starts and true strain = n dsigma/ d epsilon = sigma

[@Metallurgicalfacts]

I did wrong Answer will be "A" Part Sorry for mistake

[@Metallurgicalfacts]

Sigma/2

[@hbbabu4791]

@@Metallurgicalfacts what sigma?? In engineering Curve slope become zero.....d sigma/d epsilon equal to zero na??