Engineering Materials Which of the following statements are true for annealing of steels? Cooling is done slowly and steadily Steels are heated to 500 to 700°C Internal stresses are relieved All of these Cooling is done slowly and steadily Steels are heated to 500 to 700°C Internal stresses are relieved All of these ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Steel contains Alloying elements like chromium, tungsten nickel and copper 80% or more iron Elements like phosphorus, sulphur and silicon in varying quantities 50% or more iron Alloying elements like chromium, tungsten nickel and copper 80% or more iron Elements like phosphorus, sulphur and silicon in varying quantities 50% or more iron ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Hardness of lower bainite (tempered martensite) is about RC 57 RC 48 RC 65 RC 80 RC 57 RC 48 RC 65 RC 80 ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials According to Indian standard specifications, plain carbon steel designated by 40 C8 means that the carbon content is 0.0004 0.4 to 0.6% 0.35 to 0.45% 0.6 to 0.8% 0.0004 0.4 to 0.6% 0.35 to 0.45% 0.6 to 0.8% ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials In spheroidising process, the steel is Heated slightly above the lower critical temperature and then cooled slowly to a temperature of 600°C Heated up to the lower critical temperature and then cooled in still air None of these Heated below the lower critical temperature and then cooled slowly Heated slightly above the lower critical temperature and then cooled slowly to a temperature of 600°C Heated up to the lower critical temperature and then cooled in still air None of these Heated below the lower critical temperature and then cooled slowly ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The presence of hydrogen in steel causes Reduced neutron absorption cross-section Embrittlement Improved Weldability Corrosion resistance Reduced neutron absorption cross-section Embrittlement Improved Weldability Corrosion resistance ANSWER DOWNLOAD EXAMIANS APP
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