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 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 Heated below or closes to the lower critical temperature and then cooled slowly ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Which of the following is not the correct method of increasing fatigue limit? Shot peening Nitriding of surface Cold working Surface decarburisation Shot peening Nitriding of surface Cold working Surface decarburisation ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The crystal structure of brass is F.C.C. C.C. Orthorhombic crystalline structure H.C.P. F.C.C. C.C. Orthorhombic crystalline structure H.C.P. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The surface hardness of the following order is achieved by nitriding operation 600 VPN 250 VPN 1500 VPN 1000 to 1100 VPN 600 VPN 250 VPN 1500 VPN 1000 to 1100 VPN ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Bell metal contains 90% copper and 10% tin 85 - 92% copper and rest tin with little lead and nickel 70 - 75% copper and rest tin 70% copper and 30% zinc 90% copper and 10% tin 85 - 92% copper and rest tin with little lead and nickel 70 - 75% copper and rest tin 70% copper and 30% zinc ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Which of the following element results in presence of free graphite in C.I.? Sulphur Carbon Silicon Manganese Sulphur Carbon Silicon Manganese ANSWER DOWNLOAD EXAMIANS APP
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