Question

The ability of a material to resist plastic deformation known as _____________

(a) Tensile strength

(b) Yield strength

(c) Modulus of elasticity

(d) Impact strength

I have been asked this question in an interview for internship.

This intriguing question comes from Mechanical Properties in portion Properties of Engineering Materials of Engineering Material & Metallurgy

Answer 1

Right choice is (b) Yield strength

To explain: The point of stretching where it increases suddenly is known as yield strength, i.e. the region where the stretch is elastic. Tensile strength is the force needed to fracture the material. Impact strength is the capacity of a material to resist shock energy before a fracture.