GATE 2021 MT – Question 52
True strain for 60% height reduction in forging is ______ (two decimal places).
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Show answer and explanation
Correct answer: 0.90 to 0.94 OR -0.94 to -0.90
Explanation
Final height is 0.4h0, so logarithmic height strain is ln(hf/h0)=ln0.4=−0.91629. Its magnitude is 0.91629. The official key accepts both signs; representative **−0.92** follows the signed axial convention.