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 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 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 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 ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials In the lower part of the blast furnace (zone of fusion), the temperature is 800°C to 1000°C 400° to 700°C 1200°C to 1300°C 1500°C to 1700°C 800°C to 1000°C 400° to 700°C 1200°C to 1300°C 1500°C to 1700°C ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Cupola produces following material Wrought iron Pig iron Cast iron Malleable iron Wrought iron Pig iron Cast iron Malleable iron ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials In nodular iron, graphite is in the form of Free carbon Cementite Spheroids Flakes Free carbon Cementite Spheroids Flakes ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The surface hardness of the following order is achieved by nitriding operation 600 VPN 1000 to 1100 VPN 250 VPN 1500 VPN 600 VPN 1000 to 1100 VPN 250 VPN 1500 VPN ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Bronze is an alloy of Copper and tin None of these Copper, tin and zinc Copper and zinc Copper and tin None of these Copper, tin and zinc Copper and zinc ANSWER DOWNLOAD EXAMIANS APP
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