Engineering Materials In high speed steels, manganese is used to tougher the metal and to increase its Yield point Hardness Critical temperature Melting point Yield point Hardness Critical temperature Melting point ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The brown smoke during the operation of a Bessemer converter indicates that the The converter must be titled to remove the contents of the converter Silicon and manganese has burnt and carbon has started oxidizing Air is burning out silicon and manganese The brown smoke does not occur during the operation of a Bessemer converter The converter must be titled to remove the contents of the converter Silicon and manganese has burnt and carbon has started oxidizing Air is burning out silicon and manganese The brown smoke does not occur during the operation of a Bessemer converter ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Which of the following represents the allotropic forms of iron? Body centered cubic iron and face centered cubic iron Alpha iron and beta iron Alpha iron, gamma from and delta iron Alpha iron, beta iron and gamma iron Body centered cubic iron and face centered cubic iron Alpha iron and beta iron Alpha iron, gamma from and delta iron Alpha iron, beta iron and gamma iron ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Which is false statement about tempering? Tempering is done to Improve ductility Improve toughness Improve machinability Release stresses Improve ductility Improve toughness Improve machinability Release stresses ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The main alloying elements high speed steel in order of increasing proportion are Tungsten, titanium, vanadium Tungsten, chromium, titanium Vanadium, chromium, tungsten Chromium, titanium, vanadium Tungsten, titanium, vanadium Tungsten, chromium, titanium Vanadium, chromium, tungsten Chromium, titanium, vanadium ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Duralumin contains 5 to 6% tin, 2 to 3% copper and rest aluminium 3.5 to 4.5% copper, 0.4 to 0.7% magnesium, 0.4 to 0.7% manganese and rest aluminium 3.5 to 4.5% copper, 1.2 to 1.7% manganese, 1.8 to 2.3% nickel, 0.6% each of silicon, magnesium and iron, and rest aluminium 4 to 4.5% magnesium, 3 to 4% copper and rest aluminium 5 to 6% tin, 2 to 3% copper and rest aluminium 3.5 to 4.5% copper, 0.4 to 0.7% magnesium, 0.4 to 0.7% manganese and rest aluminium 3.5 to 4.5% copper, 1.2 to 1.7% manganese, 1.8 to 2.3% nickel, 0.6% each of silicon, magnesium and iron, and rest aluminium 4 to 4.5% magnesium, 3 to 4% copper and rest aluminium ANSWER DOWNLOAD EXAMIANS APP
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