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Q: ............. is the property of the material undergoes deformation at constant stress over a period of time.
  • A. Creep
  • B. Ductility
  • C. Resilience
  • D. Fatigue
Correct Answer: Option A - Creep– It is defined as the property of a material by virtue of which it undergoes a slow and permanent deformation under constant stress. Generally, occurs in a material when it is subjected to high temperature for a long period of time. Example- boilers, steam turbine blade, furnace part etc. Fatigue– When a material is subjected to repeated stresses. It fails at stress below the yield point stresses. Such type of failure of material is known as fatigue.
A. Creep– It is defined as the property of a material by virtue of which it undergoes a slow and permanent deformation under constant stress. Generally, occurs in a material when it is subjected to high temperature for a long period of time. Example- boilers, steam turbine blade, furnace part etc. Fatigue– When a material is subjected to repeated stresses. It fails at stress below the yield point stresses. Such type of failure of material is known as fatigue.

Explanations:

Creep– It is defined as the property of a material by virtue of which it undergoes a slow and permanent deformation under constant stress. Generally, occurs in a material when it is subjected to high temperature for a long period of time. Example- boilers, steam turbine blade, furnace part etc. Fatigue– When a material is subjected to repeated stresses. It fails at stress below the yield point stresses. Such type of failure of material is known as fatigue.