Engineering Materials When medium carbon steel is heated to coarsening temperature There is no change in grain size The grain size increases very rapidly The average grain size is a minimum The grain size first increases and then decreases very rapidly There is no change in grain size The grain size increases very rapidly The average grain size is a minimum The grain size first increases and then decreases very rapidly ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Tungsten in steel Improves wear resistance, cutting ability and toughness Improves cutting ability and reduces hardenability Refines grain size and produces less tendency to carburisation, improves corrosion and heat resistant properties Gives ductility, toughness, tensile strength and anti-corrosion properties Improves wear resistance, cutting ability and toughness Improves cutting ability and reduces hardenability Refines grain size and produces less tendency to carburisation, improves corrosion and heat resistant properties Gives ductility, toughness, tensile strength and anti-corrosion properties ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Steel contains Elements like phosphorus, sulphur and silicon in varying quantities 50% or more iron 80% or more iron Alloying elements like chromium, tungsten nickel and copper Elements like phosphorus, sulphur and silicon in varying quantities 50% or more iron 80% or more iron Alloying elements like chromium, tungsten nickel and copper ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Hardness of martensite is about RC 65 RC 48 RC 57 RC 80 RC 65 RC 48 RC 57 RC 80 ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials For the allotropic forms of iron, the points of arrest are The points of discontinuity Constant for all metals The points where there is no further flow of metal The points where no further change occurs The points of discontinuity Constant for all metals The points where there is no further flow of metal The points where no further change occurs ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The compressive strength of cast iron is __________that of its tensile strength. More than None of these Less than Equal to More than None of these Less than Equal to ANSWER DOWNLOAD EXAMIANS APP
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