Engineering Materials According to Indian standard specifications, plain carbon steel designated by 40 C8 means that the carbon content is 0.0004 0.6 to 0.8% 0.35 to 0.45% 0.4 to 0.6% 0.0004 0.6 to 0.8% 0.35 to 0.45% 0.4 to 0.6% 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 where no further change occurs Constant for all metals The points of discontinuity The points where there is no further flow of metal The points where no further change occurs Constant for all metals The points of discontinuity ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Tungsten in high speed steel provides Toughness Hot hardness Wear resistance Sharp cutting edge Toughness Hot hardness Wear resistance Sharp cutting edge ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Cobalt in steel Improves cutting ability and reduce hardenability Refines grain size and produces less tendency to carburisation, improve corrosion and heat resistant proper ties Gives ductility, toughness, tensile strength and anti corrosion property Improves wear resistance, cutting ability and toughness Improves cutting ability and reduce hardenability Refines grain size and produces less tendency to carburisation, improve corrosion and heat resistant proper ties Gives ductility, toughness, tensile strength and anti corrosion property Improves wear resistance, cutting ability and toughness ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Body centered cubic space lattice is found in Zinc, magnesium, cobalt, cadmium, antimony and bismuth Alpha iron, tungsten, chromium and molybdenum Gamma iron, aluminium, copper, lead, silver and nickel None of these Zinc, magnesium, cobalt, cadmium, antimony and bismuth Alpha iron, tungsten, chromium and molybdenum Gamma iron, aluminium, copper, lead, silver and nickel None of these ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The tensile strength of wrought iron is maximum None of these Uniform in all directions Along the lines of slag distribution Perpendicular to lines of slag distribution None of these Uniform in all directions Along the lines of slag distribution Perpendicular to lines of slag distribution ANSWER DOWNLOAD EXAMIANS APP
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