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WorksheetsEngineering Materials Quiz
Total questions: 18
Worksheet time: 9mins
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
Which of the following is an example of a thermoplastic?
Polycarbonate
Epoxy
Phenolics
Nylon
What is the process called when monomers give off water upon polymerization?
Addition reaction
Condensation reaction
Polymerization
Initiation
What is a characteristic of thermosets?
They can be reshaped multiple times.
They are made from natural sources.
They harden permanently upon cooling.
They are always ductile.
What is the term for polymers with secondary chains linked to a primary chain?
Linear
Branched
Cross-linked
Homopolymer
What is the first stage of polymerization?
Propagation
Termination
Initiation
Addition
Which of the following is an example of a copolymer?
Polyvinyl chloride
Polyethylene
Polyethylene-vinyl acetate (PEVA)
Nylon 6,6
What does the ultimate stress point represent?
The maximum stress before failure.
The start of plastic deformation.
The point of fracture.
The point of elastic deformation.
What is the main characteristic of a random polymer?
Monomers are arranged in an alternating sequence.
Monomers are arranged in a random fashion.
Monomers form blocks.
Monomers are all the same.
