Engineering Materials Chromium in steel Gives ductility, toughness, tensile strength and anti-corrosion properties Improves wear resistance, cutting ability and toughness Improves cutting ability and reduces hardenability Refines grain size and produces less tendency to carburisation, improves corrosion and heat resistant properties Gives ductility, toughness, tensile strength and anti-corrosion properties Improves wear resistance, cutting ability and toughness Improves cutting ability and reduces hardenability Refines grain size and produces less tendency to carburisation, improves corrosion and heat resistant properties ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials In spheroidising process, the steel is 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 None of these Heated up to the lower critical temperature and then cooled in still air 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 None of these Heated up to the lower critical temperature and then cooled in still air ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Which of the following statements are true for annealing of steels? Cooling is done slowly and steadily All of these Steels are heated to 500 to 700°C Internal stresses are relieved Cooling is done slowly and steadily All of these Steels are heated to 500 to 700°C Internal stresses are relieved ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Connecting rod is, usually, made from Medium carbon steel Low carbon steel High carbon steel High speed steel Medium carbon steel Low carbon steel High carbon steel High speed steel ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials In high speed steels, manganese is used to tougher the metal and to increase its Critical temperature Melting point Hardness Yield point Critical temperature Melting point Hardness Yield point ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Tungsten when added to steel __________ the critical temperature. Lowers Does not effect Raises None of these Lowers Does not effect Raises None of these ANSWER DOWNLOAD EXAMIANS APP
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