Engineering Materials In process annealing, the hypo eutectoid steel is 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 in still air 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 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 in still air 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 ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Iron ore is usually found in the form of Sulphides Oxides All of these Carbonates Sulphides Oxides All of these Carbonates ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Sulphur in cast iron Increases hardness and brittleness Make the iron white and hard Makes the iron soft and easily machinable Aids fusibility and fluidity Increases hardness and brittleness Make the iron white and hard Makes the iron soft and easily machinable Aids fusibility and fluidity ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Aluminium bronze contains 94% aluminium, 4% copper and 0.5% Mn, Mg, Si and Fe 92.5% aluminium, 4% copper, 2% nickel, and 1.5% Mg 90% magnesium and 9% aluminium with some copper 10% aluminium and 90% copper 94% aluminium, 4% copper and 0.5% Mn, Mg, Si and Fe 92.5% aluminium, 4% copper, 2% nickel, and 1.5% Mg 90% magnesium and 9% aluminium with some copper 10% aluminium and 90% copper ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Which of the following impurity in cast iron promotes graphite nodule formation and increases the fluidity of the molten metal? Phosphorus Sulphur Silicon Manganese Phosphorus Sulphur Silicon Manganese ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Closed packed hexagonal space lattice is found in Gamma-iron, aluminium, copper, lead, silver and nickel Alpha-iron, tungsten, chromium and molybdenum None of these Zinc, magnesium, cobalt, cadmium, antimony and bismuth Gamma-iron, aluminium, copper, lead, silver and nickel Alpha-iron, tungsten, chromium and molybdenum None of these Zinc, magnesium, cobalt, cadmium, antimony and bismuth ANSWER DOWNLOAD EXAMIANS APP
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