Engineering Materials The lower critical point for all steels is 600°C 700°C 723°C 913°C 600°C 700°C 723°C 913°C ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Alnico, an alloy used extensively for permanent magnets contains iron, nickel, aluminium and cobalt in the following ratio 50 : 20 : 20 : 10 40 : 30 : 20 : 10 50 : 20 : 10 : 20 30 : 20 : 30 : 20 50 : 20 : 20 : 10 40 : 30 : 20 : 10 50 : 20 : 10 : 20 30 : 20 : 30 : 20 ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The percentage of carbon in grey iron castings usually varies between 0.5 to 1% 2.5 to 4.5% 0.012 5 to 7% 0.5 to 1% 2.5 to 4.5% 0.012 5 to 7% ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The charge of the blast furnace consists of Calcined ore (1 part), coke (8 parts) and limestone (4 parts) Calcined ore, coke and limestone all in equal parts Calcined ore (8 parts), coke (4 parts) and limestone (1 part) Calcined ore (4 parts), coke (1 part) and limestone (8 parts) Calcined ore (1 part), coke (8 parts) and limestone (4 parts) Calcined ore, coke and limestone all in equal parts Calcined ore (8 parts), coke (4 parts) and limestone (1 part) Calcined ore (4 parts), coke (1 part) and limestone (8 parts) ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Sulphur in steel Lowers the toughness and transverse ductility Reduces the grain size Decreases tensile strength and hardness Acts as deoxidiser Lowers the toughness and transverse ductility Reduces the grain size Decreases tensile strength and hardness Acts as deoxidiser ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Which of the following display properties similar to that of steel? Blackheart cast iron Both (A) and (B) None of these Whiteheart cast iron Blackheart cast iron Both (A) and (B) None of these Whiteheart cast iron ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS