Engineering Materials Eutectoid reaction occurs at 600°C 1493°C 723°C 1147°C 600°C 1493°C 723°C 1147°C ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials A small percentage of boron is added to steel in order to Increase hardenability Increase wear resistance Reduce machinability Increase endurance strength Increase hardenability Increase wear resistance Reduce machinability Increase endurance strength ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The hardness of steel primarily depends on Heat treatment employed Percentage of alloying elements Shape of carbides and their distribution in iron Percentage of carbon Heat treatment employed Percentage of alloying elements Shape of carbides and their distribution in iron Percentage of carbon ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Which of the following metal is used in making electrical resistance wire for electric furnaces and heating elements? Monel metal Nichrome Phosphor bronze Babbitt metal Monel metal Nichrome Phosphor bronze Babbitt metal ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The percentage of carbon in grey iron castings usually varies between 0.5 to 1% 0.012 5 to 7% 2.5 to 4.5% 0.5 to 1% 0.012 5 to 7% 2.5 to 4.5% ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Sulphur in steel 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 Reduces the grain size Acts as deoxidiser ANSWER DOWNLOAD EXAMIANS APP
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