Engineering Materials According to Indian standard specifications, plain carbon steel designated by 40 C8 means that the carbon content is 0.6 to 0.8% 0.0004 0.4 to 0.6% 0.35 to 0.45% 0.6 to 0.8% 0.0004 0.4 to 0.6% 0.35 to 0.45% ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Sulphur in steel Lowers the toughness and transverse ductility Decreases tensile strength and hardness Reduces the grain size Acts as deoxidiser Lowers the toughness and transverse ductility Decreases tensile strength and hardness Reduces the grain size Acts as deoxidiser ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Free cutting steels Is used where rapid machining is the prime requirement Require minimum cutting force Can be cut freely Contain carbon in free from Is used where rapid machining is the prime requirement Require minimum cutting force Can be cut freely Contain carbon in free from ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Which is false statement about case hardening? Case hardening is done by Nitriding Induction hardening Cyaniding Electroplating Nitriding Induction hardening Cyaniding Electroplating ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Tensile strength of steel can be safely increased by Adding small quantities of copper Adding carbon up to 0.83% Adding carbon up to 2.8% Adding carbon up to 6.3% Adding small quantities of copper Adding carbon up to 0.83% Adding carbon up to 2.8% Adding carbon up to 6.3% ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials A material is said to be allotropic, if it has Any one of the above Different crystal structures at different temperatures Atoms distributed in random pattern Fixed structure at all temperatures Any one of the above Different crystal structures at different temperatures Atoms distributed in random pattern Fixed structure at all temperatures ANSWER DOWNLOAD EXAMIANS APP
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