Engineering Materials Questions

• Combined carbon in iron makes the metal
• The machinability of steel is improved by adding
• The aluminium alloy, mainly used, for anodized utensil manufacture, is
• The blade of a power saw is made of
• The alloying element which can replace tungsten in high speed steels is
• An aluminium alloy with 11% silicon is used for making engine pistons by die casting technique.
• The ability of a material to undergo large permanent deformation with the application of a tensile force, is called ductility.
• The brown smoke during the operation of a bessemer Converter indicates that the
• Pearlite consists of
• The carbon in the pig iron varies from
• Induction hardening is basically a
• The strength is the ability of a material to resist
• When elements like nickel, chromium, copper and molybdenum are added to the molten cast iron, it produces
• In induction hardening, the depth of hardening is controlled by controlling the voltage.
• Bronze is an alloy of
• Blast furnace is used to produce
• The austenite is a solid solution of carbon or iron carbide in gamma-iron.
• Cartidge brass can be
• In normalising process, the hypo-eutectiod steel is heated from 30° C to 50° C above the upper critical temperature and then cooled in still air.
• In flame hardening, oxy-acetylene flame is used.