Engineering Materials When low carbon steel is heated up to lower critical temperature The grain size first increases and then decreases very rapidly The average grain size is a minimum There is no change in grain size The grain size increases very rapidly The grain size first increases and then decreases very rapidly The average grain size is a minimum There is no change in grain size The grain size increases very rapidly ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The metal suitable for bearings subjected to light loads, is Monel metal White metal Phosphor bronze Silicon bronze Monel metal White metal Phosphor bronze Silicon bronze ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The bond formed by transferring electrons from one atom to another is called Covalent bond Metallic bond Ionic bond None of these Covalent bond Metallic bond Ionic bond None of these ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials In the lower part of the blast furnace (zone of fusion), the temperature is 1500°C to 1700°C 800°C to 1000°C 1200°C to 1300°C 400° to 700°C 1500°C to 1700°C 800°C to 1000°C 1200°C to 1300°C 400° to 700°C ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Body centered cubic space lattice is found in None of these Gamma iron, aluminium, copper, lead, silver and nickel Zinc, magnesium, cobalt, cadmium, antimony and bismuth Alpha iron, tungsten, chromium and molybdenum None of these Gamma iron, aluminium, copper, lead, silver and nickel Zinc, magnesium, cobalt, cadmium, antimony and bismuth Alpha iron, tungsten, chromium and molybdenum 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 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 from 30°C to 50°C above the upper critical temperature and then cooled slowly in the furnace 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 in still air Heated from 30°C to 50°C above the upper critical temperature and then cooled slowly in the furnace ANSWER DOWNLOAD EXAMIANS APP
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