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Engineering
Mechanical
ME Set-3
Engineering Materials
7

Engineering Materials MCQ with Answers

7) The materials having same elastic properties in all directions are called

ideal materials

uniform materials

isotropic materials

practical materials

Answer is:

isotropic materials

Engineering Materials MCQ with Answers

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Related Engineering Materials MCQ with Answers

8) A thin mild steel wire is loaded by adding loads in equal increments till it breaks. The extensions noted with increasing loads will behave as under

uniform throughout

increase uniformly

first increase and then decrease

increase uniformly first and then increase rapidly

Answer is:

increase uniformly first and then increase rapidly

9) Modulus of rigidity is defined as the ratio of

longitudinal stress and longitudinal strain

volumetric stress and volumetric strain

lateral stress and lateral strain

shear stress and shear strain

Answer is:

shear stress and shear strain

10) If the radius of wire stretched by a load is doubled, then its Young′s modulus will be

doubled

halved

become four times

remain unaffected.

Answer is:

remain unaffected.

11) The ultimate tensile stress of mild steel compared to ultimate compressive stress is

same

more

less

more or less depending on other factors

Answer is:

more

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