Intro. to materials selection

Which of the following is a composite material?

• Copper

• Epoxy resin

• Concrete

• Silicon

Which category of materials typically has high strength, good conductivity, and ductility?

• Ceramics

• Metals

• Polymers

• Composites

What is the main drawback of ceramics in structural applications?

• Poor corrosion resistance

• High cost

• Bakelite

• Low strength

Which material is commonly used in making electronic chips?

• Glass

• Polyethylene

• Silicon

• Bronze

Which one is a smart material that can return to its original shape after deformation?

• Carbon fiber

• Shape Memory Alloy (SMA)

• PVC

• Ceramic

Which of the following is not a typical characteristic of polymers?

• Lightweight

• Low melting point

• Brittle at room temperature

• Electrical insulator

Glass, alumina, and silicon carbide belong to which category?

• Metals

• Polymers

• Ceramics

• Semiconductors

Which bonding type is commonly found in metals?

• Covalent bond

• Ionic bond

• Metallic bond

• Hydrogen bond

The matrix in a fiber-reinforced polymer composite is usually made of:

• Steel

• Epoxy resin

• Ceramic

• Wood

Which crystal structure has the highest packing efficiency?

• Body-Centered Cubic (BCC)

• Hexagonal Close-Packed (HCP)

• Face-Centered Cubic (FCC)

• Simple Cubic (SC)