Engineering Materials Smelting is the process of Removing the impurities like clay, sand etc. from the iron ore by washing with water All of these Reducing the ore with carbon in the presence of a flux Expelling moisture, carbon dioxide, sulphur and arsenic from the iron ore by heating in shallow kilns Removing the impurities like clay, sand etc. from the iron ore by washing with water All of these Reducing the ore with carbon in the presence of a flux Expelling moisture, carbon dioxide, sulphur and arsenic from the iron ore by heating in shallow kilns ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials In high speed steels, manganese is used to tougher the metal and to increase its Melting point Yield point Critical temperature Hardness Melting point Yield point Critical temperature Hardness ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials When a steel containing __________ 0.8% carbon is cooled slowly below the lower critical point, it consists of ferrite and pearlite. More than Equal to None of these Less than More than Equal to None of these Less than ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Free cutting steels Require minimum cutting force Is used where rapid machining is the prime requirement Contain carbon in free from Can be cut freely Require minimum cutting force Is used where rapid machining is the prime requirement Contain carbon in free from Can be cut freely ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Which of the following elements does not impart hardness to steel? Silicon Chromium Nickel Copper Silicon Chromium Nickel Copper ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Which of the following represents the allotropic forms of iron? Alpha iron, gamma from and delta iron Alpha iron and beta iron Body centered cubic iron and face centered cubic iron Alpha iron, beta iron and gamma iron Alpha iron, gamma from and delta iron Alpha iron and beta iron Body centered cubic iron and face centered cubic iron Alpha iron, beta iron and gamma iron ANSWER DOWNLOAD EXAMIANS APP
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