Engineering Materials Quiz

What is a characteristic of metals?

• They are always brittle.

• They do not have a lustrous appearance.

• They are always ductile.

• They conduct electricity and heat well.

Which of the following is NOT a frequently used metal?

• Copper (Cu)

• Aluminum (Al)

• Gold (Au)

• Nickel (Ni)

What does elasticity measure?

• The ability to return to original shape.

• The ability to absorb energy.

• The maximum stress before failure.

• The amount of plastic deformation.

What is plasticity?

• The ability to absorb energy.

• The ability to conduct electricity.

• The ability to stretch and remain deformed.

• The ability to return to original shape.

Which term describes materials that can stretch significantly before breaking?

• Plastic

• Elastic

• Ductile

• Brittle

What is toughness in materials?

• The ability to absorb energy before fracture.

• The ability to deform elastically.

• The ability to return to original shape.

• The maximum stress a material can endure.

What does the stress-strain curve's yield point indicate?

• The start of plastic deformation.

• The point of elastic deformation.

• The maximum stress before failure.

• The point of fracture.

What is the formula for stress?

• σ = Ao/F

• σ = F*Ao

• σ = A/F

• σ = F/Ao

Which of the following is a natural polymer?

• Polystyrene

• Polyethylene

• Nucleic acids

• Polyvinyl chloride

What type of polymer is formed from one chemical repeating unit?

• Block copolymers

• Copolymers

• Homopolymers

• Random polymers