Engineering Materials In a hardening process, the hypo-eutectoid steel is Heated from 30°C to 50°C above the upper critical temperature and then cooled suddenly in a suitable cooling medium Heated from 30°C to 50°C above the upper critical temperature and then cooled in still air Heated below or closes to the lower critical temperature and then cooled slowly Heated from 30°C to 50°C above the upper critical temperature and then cooled slowly in the furnace Heated from 30°C to 50°C above the upper critical temperature and then cooled suddenly in a suitable cooling medium Heated from 30°C to 50°C above the upper critical temperature and then cooled in still air Heated below or closes to the lower critical temperature and then cooled slowly Heated from 30°C to 50°C above the upper critical temperature and then cooled slowly in the furnace ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Smelting is the process of Reducing the ore with carbon in the presence of a flux All of these 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 Reducing the ore with carbon in the presence of a flux All of these 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 ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Cupola produces following material Cast iron Pig iron Wrought iron Malleable iron Cast iron Pig iron Wrought iron Malleable iron ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Cyaniding is the process of Adding carbon and nitrogen by heat treatment of steel to increase its surface hardness Obtaining cyanide salts Dipping steel in cyanide bath Reacting steel surface with cyanide salts Adding carbon and nitrogen by heat treatment of steel to increase its surface hardness Obtaining cyanide salts Dipping steel in cyanide bath Reacting steel surface with cyanide salts ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The brown smoke during the operation of a Bessemer converter indicates that the Air is burning out silicon and manganese The brown smoke does not occur during the operation of a Bessemer converter Silicon and manganese has burnt and carbon has started oxidizing The converter must be titled to remove the contents of the converter Air is burning out silicon and manganese The brown smoke does not occur during the operation of a Bessemer converter Silicon and manganese has burnt and carbon has started oxidizing The converter must be titled to remove the contents of the converter ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Cold rolled steel sheets contain carbon of the following order 0.004 0.001 0.002 0.006 0.004 0.001 0.002 0.006 ANSWER DOWNLOAD EXAMIANS APP
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