What is the definition of Young's modulus?

• Stress / strain

• Strain / stress

• Force / area

• Area / force

What is the process of strengthening a metal by plastic deformation?

• Annealing

• Quenching

• Work hardening

• Tempering

What is the definition of toughness?

• Resistance to scratching

• Resistance to indentation

• Energy absorbed during fracture

• Stiffness

What is the primary characteristic of ceramics?

• High ductility

• High conductivity

• High hardness

• High flexibility

What is the glass transition temperature?

• Melting point

• Crystallization point

• Transition from rigid to rubbery state

• Boiling point

What is a composite material?

• Single element

• Single compound

• Combination of two or more materials

• Pure metal

What makes polymers different from metals?

• High melting point

• Long chain molecules

• High hardness

• High density

What is the definition of fatigue in materials?

• Failure due to static load

• Failure due to cyclic loading

• Failure due to high temperature

• Failure due to corrosion

What is the process of heat treatment to reduce internal stresses?

• Quenching

• Tempering

• Annealing

• Cold working

Which defect in a crystal is an empty lattice site?

• Interstitial

• Vacancy

• Substitutional

• Dislocation