Engineering Materials Addition of copper to aluminium results in Improving machinability Improvement of casting characteristics Improvement of corrosion resistance One of the best known age and precipitation hardening systems Improving machinability Improvement of casting characteristics Improvement of corrosion resistance One of the best known age and precipitation hardening systems ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The alloy used for making electrical resistances and heating elements is Magnin Nichrome Elinvar Invar Magnin Nichrome Elinvar Invar ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials For the allotropic forms of iron, the points of arrest are The points where there is no further flow of metal The points of discontinuity Constant for all metals The points where no further change occurs The points where there is no further flow of metal The points of discontinuity Constant for all metals The points where no further change occurs ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Eutectoid reaction occurs at 1147°C 600°C 1493°C 723°C 1147°C 600°C 1493°C 723°C ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Sulphur in steel Reduces the grain size Acts as deoxidiser Decreases tensile strength and hardness Lowers the toughness and transverse ductility Reduces the grain size Acts as deoxidiser Decreases tensile strength and hardness Lowers the toughness and transverse ductility ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Corrosion resistance of steel is increased by addition of Tungsten, molybdenum, vanadium, chromium Vanadium, aluminium Chromium and nickel Sulphur, phosphorus, lead Tungsten, molybdenum, vanadium, chromium Vanadium, aluminium Chromium and nickel Sulphur, phosphorus, lead ANSWER DOWNLOAD EXAMIANS APP
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