Engineering Materials Chromium when added to steel _________ the tensile strength. Decreases None of these Increases Does not effect Decreases None of these Increases Does not effect ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The stiffness is the ability of a material to resist Fracture due to high impact loads Deformation under stress Externally applied forces with breakdown or yielding None of these Fracture due to high impact loads Deformation under stress Externally applied forces with breakdown or yielding None of these ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The machinability of aluminium increases when _________ is added to aluminium. Copper Lead and bismuth Magnesium Silicon Copper Lead and bismuth Magnesium Silicon ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Chromium in steel Improves cutting ability and reduces hardenability Gives ductility, toughness, tensile strength and anti-corrosion properties Refines grain size and produces less tendency to carburisation, improves corrosion and heat resistant properties Improves wear resistance, cutting ability and toughness Improves cutting ability and reduces hardenability Gives ductility, toughness, tensile strength and anti-corrosion properties Refines grain size and produces less tendency to carburisation, improves corrosion and heat resistant properties Improves wear resistance, cutting ability and toughness ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials 1841 high speed steel contains Vanadium 4%, chromium 18% and tungsten 1% None of these Vanadium 18%, chromium 1% and tungsten 4% Vanadium 1%, chromium 4% and tungsten 18% Vanadium 4%, chromium 18% and tungsten 1% None of these Vanadium 18%, chromium 1% and tungsten 4% Vanadium 1%, chromium 4% and tungsten 18% ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials When low carbon steel is heated up to upper critical temperature The grain size first increases and then decreases very rapidly The average grain size is a minimum The grain size increases very rapidly There is no change in grain size The grain size first increases and then decreases very rapidly The average grain size is a minimum The grain size increases very rapidly There is no change in grain size ANSWER DOWNLOAD EXAMIANS APP
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