Engineering Materials When low carbon steel is heated up to upper critical temperature The grain size first increases and then decreases very rapidly There is no change in grain size The grain size increases very rapidly The average grain size is a minimum The grain size first increases and then decreases very rapidly There is no change in grain size The grain size increases very rapidly The average grain size is a minimum ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The percentage carbon content in wrought iron is about 0.4 2 0.02 0.1 0.4 2 0.02 0.1 ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Bell metal contains 85 - 92% copper and rest tin with little lead and nickel 70% copper and 30% zinc 70 - 75% copper and rest tin 90% copper and 10% tin 85 - 92% copper and rest tin with little lead and nickel 70% copper and 30% zinc 70 - 75% copper and rest tin 90% copper and 10% tin ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The temperature at which ferromagnetic alpha iron transforms to paramagnetic alpha iron is 770°C 1050°C Below recrystallization temperature 910°C 770°C 1050°C Below recrystallization temperature 910°C ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Age-hardening is related with German silver Duralumin Gun metal Stainless steel German silver Duralumin Gun metal Stainless steel ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Corrosion resistance of steel is increased by addition of Chromium and nickel Tungsten, molybdenum, vanadium, chromium Vanadium, aluminium Sulphur, phosphorus, lead Chromium and nickel Tungsten, molybdenum, vanadium, chromium Vanadium, aluminium Sulphur, phosphorus, lead ANSWER DOWNLOAD EXAMIANS APP
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