Material Engineering Quiz

What is the defining characteristic of ferrous metals?

• Do not contain any carbon

• Contain iron (Fe) as the base element

• Are always stainless

• Are made from synthetic alloys

What is the carbon content range in low carbon steel?

• 0.05 - 0.32%

• 0.6 - 0.7%

• 0.35 - 0.5%

• 0.03 - 0.3%

What is a common application of grey cast iron?

• Engine blocks and machine bases

• Nails and screws

• Cranes and metal poles

• Springs and gears

What is the key property of white cast iron?

• Easily weldable

• Hard and brittle

• Easy to machine

• Highly elastic

Which non-ferrous metal is commonly used in electrical cables?

• Aluminum

• Copper

• Zinc

• Tin

What is the alloy of copper and zinc called?

• Bronze

• Brass

• Stainless steel

• Teflon

What heat treatment process reduces brittleness in hardened steel?

• Hardening

• Tempering

• Normalizing

• Annealing

What is the main purpose of annealing?

• To relieve internal stresses in the metal

• To harden the metal surface

• To increase elasticity

• To add carbon to the metal

What is corrosion?

• Transformation of metal into ceramics

• Deterioration of materials due to chemical reaction with the environment

• Color change of metals only

• Expansion of metals under heat

Where is aluminum widely used?

• Gear manufacturing

• Electric motors

• Aerospace and construction industry

• Only in laboratory tools