Unit I Assessment

_________is the ability of a material to resist deformation under stress.

• Strength

• Stiffness

• Hardness

• Brittleness

The tendency of a deformed solid to regain its actual proportions instantly upon unloading known as ______________

• perfectly elastic

• delayed elasticity

• inelastic effect

• plasticity

The permanent mode of deformation of a material known as _____________

• elastic deformation

• plastic deformation

• slip deformation

• twinning deformation

Resistance developed by surface of any material is known as ____________

• strength

• hardness

• stiffness

• creep

The ability of materials to develop a characteristic behavior under repeated loading known as ___________

• toughness

• resilience

• hardness

• fatigue

The ability of a material to be formed by hammering or rolling is known as _________

• malleability

• ductility

• hardness

• brittleness

The ability of a material to resist fracture due to high impact loads is called

• strength

• stiffness

• toughness

• brittleness

Permanent deformation of material with respect to time due to constant load and variable temperature is termed as ____________

• elasticity

• isotropy

• hardness

• creep

The sealing ring for a pressure cooker is made from

• leather

• rubber

• plastic

• aluminum

The material for making packing for covering steam pipes to avoid heat transfer is made up of

• asbestos

• gold

• iron

• aluminum