Engineering Materials Nodular cast iron is produced by adding ________ to the molten cast iron. Copper Nickel Magnesium Chromium Copper Nickel Magnesium Chromium ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The alloying element which increases residual magnetism and coercive magnetic force in steel for magnets is Cobalt Chromium Nickel Vanadium Cobalt Chromium Nickel Vanadium 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 : 10 : 20 50 : 20 : 20 : 10 30 : 20 : 30 : 20 40 : 30 : 20 : 10 50 : 20 : 10 : 20 50 : 20 : 20 : 10 30 : 20 : 30 : 20 40 : 30 : 20 : 10 ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials In malleable iron, carbon is present in the form of Cementite Nodular aggregates of graphite Flakes Free carbon Cementite Nodular aggregates of graphite Flakes Free carbon ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The presence of sulphur in pig iron makes It hard It easily machinable The casting unsound It brittle It hard It easily machinable The casting unsound It brittle ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Combined carbon in iron makes the metal Soft and gives coarse grained crystalline structure Hard and gives a coarse grained crystalline structure Hard and gives a fine grained crystalline structure Soft and gives a fine grained crystalline structure Soft and gives coarse grained crystalline structure Hard and gives a coarse grained crystalline structure Hard and gives a fine grained crystalline structure Soft and gives a fine grained crystalline structure ANSWER DOWNLOAD EXAMIANS APP
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