Engineering Materials Addition of manganese to aluminium results in Improving machinability One of the best known age and precipitation hardening systems Improvement of corrosion resistance Improvement of casting characteristics Improving machinability One of the best known age and precipitation hardening systems Improvement of corrosion resistance Improvement of casting characteristics ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials In a hardening process, 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 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 from 30°C to 50°C above the upper critical temperature and then cooled in still air 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 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 from 30°C to 50°C above the upper critical temperature and then cooled in still air ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The tensile strength of wrought iron is maximum None of these Uniform in all directions Perpendicular to lines of slag distribution Along the lines of slag distribution None of these Uniform in all directions Perpendicular to lines of slag distribution Along the lines of slag distribution ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The material widely used for making pendulums of clocks is Heat resisting steel Stainless steel Nickel steel High speed steel Heat resisting steel Stainless steel Nickel steel High speed steel ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The aluminium alloy, mainly used, for anodized utensil manufacture, is Duralumin Magnalium Y-alloy Hindalium Duralumin Magnalium Y-alloy Hindalium ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Which of the following elements does not impart hardness to steel? Chromium Nickel Silicon Copper Chromium Nickel Silicon Copper ANSWER DOWNLOAD EXAMIANS APP
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