Engineering Materials The surface hardness of the following order is achieved by nitriding operation 250 VPN 1000 to 1100 VPN 600 VPN 1500 VPN 250 VPN 1000 to 1100 VPN 600 VPN 1500 VPN ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The following element can't impart high strength at elevated temperature Silicon Nickel Magnesium Manganese Silicon Nickel Magnesium Manganese ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Preheating is essential in welding Cast iron All nonferrous materials High speed steel All of these Cast iron All nonferrous materials High speed steel All of these 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 in still air 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 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 in still air 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 below or closes to the lower critical temperature and then cooled slowly ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Steel containing ferrite and pearlite is Soft Hard and tough Tough Hard Soft Hard and tough Tough Hard ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Gamma-iron occurs between the temperature ranges of 600°C to 900°C 1400°C to 1530°C 400°C to 600°C 900°C to 1400°C 600°C to 900°C 1400°C to 1530°C 400°C to 600°C 900°C to 1400°C ANSWER DOWNLOAD EXAMIANS APP
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