Engineering Materials When elements like nickel, chromium, copper and molybdenum are added to the molten cast iron, it produces Alloy cast iron Malleable cast iron White cast iron Nodular cast iron Alloy cast iron Malleable cast iron White cast iron Nodular cast iron ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Which of the following statements are true for annealing of steels? Internal stresses are relieved Cooling is done slowly and steadily Steels are heated to 500 to 700°C All of these Internal stresses are relieved Cooling is done slowly and steadily Steels are heated to 500 to 700°C All of these ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials When low carbon steel is heated up to lower critical temperature The average grain size is a minimum The grain size first increases and then decreases very rapidly There is no change in grain size The grain size increases very rapidly The average grain size is a minimum The grain size first increases and then decreases very rapidly There is no change in grain size The grain size increases very rapidly ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Vanadium in high speed steels Forms very hard carbides and thus increases wear resistance Provides high hot hardness Promotes decarburisation Promotes retention of austenite Forms very hard carbides and thus increases wear resistance Provides high hot hardness Promotes decarburisation Promotes retention of austenite ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Compressive strength of grey cast iron in tonnes/cm is of the order of 1015 35 710 57 1015 35 710 57 ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Sulphur in cast iron Increases hardness and brittleness Aids fusibility and fluidity Makes the iron soft and easily machinable Make the iron white and hard Increases hardness and brittleness Aids fusibility and fluidity Makes the iron soft and easily machinable Make the iron white and hard ANSWER DOWNLOAD EXAMIANS APP
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