Engineering Materials Which of the following elements does not impart hardness to steel? Chromium Silicon Nickel Copper Chromium Silicon Nickel Copper ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials If a refractory contains high content of silicon, it means refractory is Brittle Acidic Neutral Basic Brittle Acidic Neutral Basic ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Vanadium in high speed steels Forms very hard carbides and thus increases wear resistance Promotes decarburisation Provides high hot hardness Promotes retention of austenite Forms very hard carbides and thus increases wear resistance Promotes decarburisation Provides high hot hardness Promotes retention of austenite ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Sulphur in steel Reduces the grain size Lowers the toughness and transverse ductility Acts as deoxidiser Decreases tensile strength and hardness Reduces the grain size Lowers the toughness and transverse ductility Acts as deoxidiser Decreases tensile strength and hardness ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Taps dies and drills contain carbon Above 2.2% Below 0.5% Above 1% Below 1% Above 2.2% Below 0.5% Above 1% Below 1% ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Aluminium bronze contains aluminium and copper in the ratio of 40 : 60 0.47916666666667 2.1180555555556 2.5277777777778 40 : 60 0.47916666666667 2.1180555555556 2.5277777777778 ANSWER DOWNLOAD EXAMIANS APP