Engineering Materials The percentage of carbon in grey iron castings usually varies between 0.012 2.5 to 4.5% 0.5 to 1% 5 to 7% 0.012 2.5 to 4.5% 0.5 to 1% 5 to 7% ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The lower critical temperature Decreases as the carbon content in steel increases Increases as the carbon content in steel increases Depends upon the rate of heating Is same for all steels Decreases as the carbon content in steel increases Increases as the carbon content in steel increases Depends upon the rate of heating Is same for all steels ANSWER DOWNLOAD EXAMIANS APP
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 slowly in the furnace 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 suddenly in a suitable cooling medium Heated from 30°C to 50°C above the upper critical temperature and then cooled slowly in the furnace 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 ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Connecting rod is, usually, made from High speed steel High carbon steel Low carbon steel Medium carbon steel High speed steel High carbon steel Low carbon steel Medium carbon steel ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The presence of sulphur in pig iron makes The casting unsound It brittle It easily machinable It hard The casting unsound It brittle It easily machinable It hard ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Corrosion resistance of steel is increased by adding Tungsten and sulphur Chromium and nickel Nickel and molybdenum Aluminium and zinc Tungsten and sulphur Chromium and nickel Nickel and molybdenum Aluminium and zinc ANSWER DOWNLOAD EXAMIANS APP
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