ISRO Mechanical & Aerospace 2016 - Question 78

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Topic: Material Science

Match the items in column-1 and column-2 and choose the correct combination
Column-1: A. Resilience, B. Fatigue, C. Stiffness, D. Elasticity
Column-2: 1. Ability of the material to return to the original shape when load is removed. 2. Capacity of a material to absorb energy elastically. 3. Ability of the material to absorb certain amount of energy without failure. 4. Resistance of the material to elastic deformation. 5. Failure of material at loads less than that at normal conditions

  • A. A-2, B-5, C-3, D-1
  • B. A-3, B-2, C-1, D-4
  • C. A-3, B-5, C-4, D-2
  • D. A-2, B-5, C-4, D-1

Answer: D. A-2, B-5, C-4, D-1

Explanation: Resilience defines the capacity of a material to absorb energy elastically without yielding (2). Fatigue refers to the failure of material at loads significantly lower than normal due to cyclic loading (5). Stiffness indicates a material's resistance to elastic deformation under a load (4). Elasticity describes the fundamental ability of a material to revert to its original shape upon removing an external load (1).

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