Engineering Materials Recrystallization temperature is one At which crystals first start forming from molten metal when it is cooled At which crystals grow bigger in size At which new spherical crystals first begin to form from the old deformed one when a strained metal is heated At which change of allotropic form takes place At which crystals first start forming from molten metal when it is cooled At which crystals grow bigger in size At which new spherical crystals first begin to form from the old deformed one when a strained metal is heated At which change of allotropic form takes place ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Quenching is not necessary when hardening is done by Flame hardening Case hardening Nitriding Any one of these Flame hardening Case hardening Nitriding Any one of these ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Which of the following element results in presence of free graphite in C.I.? Sulphur Carbon Manganese Silicon Sulphur Carbon Manganese Silicon ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Sulphur in steel Reduces the grain size Decreases tensile strength and hardness Lowers the toughness and transverse ductility Acts as deoxidiser Reduces the grain size Decreases tensile strength and hardness Lowers the toughness and transverse ductility Acts as deoxidiser ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Tungsten in high speed steel provides Hot hardness Wear resistance Toughness Sharp cutting edge Hot hardness Wear resistance Toughness Sharp cutting edge ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The charge of the blast furnace consists of Calcined ore (8 parts), coke (4 parts) and limestone (1 part) Calcined ore, coke and limestone all in equal parts Calcined ore (4 parts), coke (1 part) and limestone (8 parts) Calcined ore (1 part), coke (8 parts) and limestone (4 parts) Calcined ore (8 parts), coke (4 parts) and limestone (1 part) Calcined ore, coke and limestone all in equal parts Calcined ore (4 parts), coke (1 part) and limestone (8 parts) Calcined ore (1 part), coke (8 parts) and limestone (4 parts) ANSWER DOWNLOAD EXAMIANS APP
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