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GATE 2016 ME (ME3) – Question 30

Engineering Materials · Engineering and true stress-strain diagrams · 1 mark · Multiple choice

Engineering strain of a mild steel sample is recorded as 0.100%. The true strain is

  1. 0.010%
  2. 0.055%
  3. 0.099%
  4. 0.101%

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Show answer and explanation

Correct answer: (C) 0.099%

Explanation

Engineering strain0.100% is0.001 as a fraction. True strain is ln(1+0.001)=0.0009995003, or0.0999500%. Among the listed options **C,0.099%**, is closest. It is not the correctly rounded three-decimal percentage, which would be0.100%; the official choice is retained with that qualification.