Engineering Materials Addition of copper to aluminium results in 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 Improving machinability One of the best known age and precipitation hardening systems 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 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 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 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 ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Cast iron is a Brittle material Malleable material Ductile material Tough material Brittle material Malleable material Ductile material Tough material ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The machinability of steel is increased by Phosphorous, lead and sulphur Sulphur, graphite and aluminium Silicon and sulphur Phosphorous and aluminium Phosphorous, lead and sulphur Sulphur, graphite and aluminium Silicon and sulphur Phosphorous and aluminium ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials For the allotropic forms of iron, the points of arrest are Constant for all metals The points where there is no further flow of metal The points where no further change occurs The points of discontinuity Constant for all metals The points where there is no further flow of metal The points where no further change occurs The points of discontinuity ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The purpose of heat treatment is to Any one of these Modify the structure of the material Change grain size Relieve the stresses set up in the material after hot or cold working Any one of these Modify the structure of the material Change grain size Relieve the stresses set up in the material after hot or cold working ANSWER DOWNLOAD EXAMIANS APP
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