Engineering Materials Dow metal contains 90% aluminium and 90% copper 90% magnesium and 9% aluminium with some copper 92.5% aluminium and, 4% copper, 2% nickel and 1.5% Mg 94% aluminium, 4% copper and 0.5% Mn, Mg, Si and Fe 90% aluminium and 90% copper 90% magnesium and 9% aluminium with some copper 92.5% aluminium and, 4% copper, 2% nickel and 1.5% Mg 94% aluminium, 4% copper and 0.5% Mn, Mg, Si and Fe ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Which of the following statements are true for annealing of steels? Cooling is done slowly and steadily Internal stresses are relieved Steels are heated to 500 to 700°C All of these Cooling is done slowly and steadily Internal stresses are relieved Steels are heated to 500 to 700°C All of these ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials In high speed steels, manganese is used to tougher the metal and to increase its Hardness Critical temperature Yield point Melting point Hardness Critical temperature Yield point Melting point ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The unit cells Contain the smallest number of atoms which when taken together have all the properties of the crystals of the particular metal May be defined as the smallest parallelepiped which could be transposed in three coordinate directions to build up the space lattice All of these Have the same orientation and their similar faces are parallel Contain the smallest number of atoms which when taken together have all the properties of the crystals of the particular metal May be defined as the smallest parallelepiped which could be transposed in three coordinate directions to build up the space lattice All of these Have the same orientation and their similar faces are parallel ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Corundum contains more than 95% SiO2 Al2O3 MgO Steel SiO2 Al2O3 MgO Steel ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The temperature required for full annealing in hypereutectoid steel is 30° C to 50° C above lower critical temperature 30° C to 50° C below upper critical temperature 30° C to 50° C above upper critical temperature 30° C to 50° C below lower critical temperature 30° C to 50° C above lower critical temperature 30° C to 50° C below upper critical temperature 30° C to 50° C above upper critical temperature 30° C to 50° C below lower critical temperature ANSWER DOWNLOAD EXAMIANS APP
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