GATE 2023 PI – Question 25

General Engineering · Engineering Materials · 1 mark · Multiple choice

Creep of mild steel at elevated temperature involves which behavior?

Elastic deformation under constant load
Elastic deformation under dynamic load
Plastic deformation under constant load
Plastic deformation under dynamic load

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Show answer and explanation

Correct answer: (C) Plastic deformation under constant load

Explanation

Creep is time-dependent permanent deformation under sustained stress, especially significant at elevated temperature. The matching description is **plastic deformation under constant load, C**.

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