IET 130 Exam questions well
answered
Steel - correct answer ✔✔ · an alloy of iron and carbon, with the carbon being restricted within
certain concentration limits.
Continuous Casting - correct answer ✔✔ machines run 90% of the time
Pickling - correct answer ✔✔ Use of acids to remove oxides and scale on hot-worked steels.
Ferrous - correct answer ✔✔ · meaning "made of iron"; have at least 50% iron
Nonferrous - correct answer ✔✔ contains less than 50% iron
Wrought - correct answer ✔✔ made into a sheet by rolling, drawing, and extruding it
Cast - correct answer ✔✔ pouring into a mold to obtain shape
Age harden - correct answer ✔✔ exposing an aluminum alloy to a specific temperature-time
cycle
Hardcoating - correct answer ✔✔ electrochemical process for a thicker (and usually black)
anodize coating
Organic Chemistry - correct answer ✔✔ matter that contains the element carbon (natural or
synthetic)
, Inorganic Chemistry - correct answer ✔✔ · matter that is mineral in origin and does not contain
carbon
Terpolymers - correct answer ✔✔ when a polymer consists of three different repeating units
(mers)
Polymers - correct answer ✔✔ natural or synthetic organic compounds
Plastics - correct answer ✔✔ a synthetic material made from a wide range of organic polymers
Thermoplastics - correct answer ✔✔ capable of being repeatedly softened by heat and
hardened by cooling.
Thermoset - correct answer ✔✔ a network polymer that will undergo or has undergone a
chemical reaction by the action of heat, catalysts, ultraviolet light, leading to a relatively
infusible state or cross linking
Amorphous - correct answer ✔✔ the molecular chains have NO order (characteristics: Clear,
Softens, Low Shrinkage)
Crystalline - correct answer ✔✔ regions in the plastic that take on a highly ordered structure
(Opaque, Melts, High Shrinkage)
Composite - correct answer ✔✔ a material composed of two or more different
materials/substances, when combined have new properties that did not exist before. Also, each
material/substance still retains its molecular structure.
Hybrids - correct answer ✔✔ Two or more different types of fibers combined together
answered
Steel - correct answer ✔✔ · an alloy of iron and carbon, with the carbon being restricted within
certain concentration limits.
Continuous Casting - correct answer ✔✔ machines run 90% of the time
Pickling - correct answer ✔✔ Use of acids to remove oxides and scale on hot-worked steels.
Ferrous - correct answer ✔✔ · meaning "made of iron"; have at least 50% iron
Nonferrous - correct answer ✔✔ contains less than 50% iron
Wrought - correct answer ✔✔ made into a sheet by rolling, drawing, and extruding it
Cast - correct answer ✔✔ pouring into a mold to obtain shape
Age harden - correct answer ✔✔ exposing an aluminum alloy to a specific temperature-time
cycle
Hardcoating - correct answer ✔✔ electrochemical process for a thicker (and usually black)
anodize coating
Organic Chemistry - correct answer ✔✔ matter that contains the element carbon (natural or
synthetic)
, Inorganic Chemistry - correct answer ✔✔ · matter that is mineral in origin and does not contain
carbon
Terpolymers - correct answer ✔✔ when a polymer consists of three different repeating units
(mers)
Polymers - correct answer ✔✔ natural or synthetic organic compounds
Plastics - correct answer ✔✔ a synthetic material made from a wide range of organic polymers
Thermoplastics - correct answer ✔✔ capable of being repeatedly softened by heat and
hardened by cooling.
Thermoset - correct answer ✔✔ a network polymer that will undergo or has undergone a
chemical reaction by the action of heat, catalysts, ultraviolet light, leading to a relatively
infusible state or cross linking
Amorphous - correct answer ✔✔ the molecular chains have NO order (characteristics: Clear,
Softens, Low Shrinkage)
Crystalline - correct answer ✔✔ regions in the plastic that take on a highly ordered structure
(Opaque, Melts, High Shrinkage)
Composite - correct answer ✔✔ a material composed of two or more different
materials/substances, when combined have new properties that did not exist before. Also, each
material/substance still retains its molecular structure.
Hybrids - correct answer ✔✔ Two or more different types of fibers combined together
