Engineering Materials A material is said to be allotropic, if it has Different crystal structures at different temperatures Fixed structure at all temperatures Any one of the above Atoms distributed in random pattern Different crystal structures at different temperatures Fixed structure at all temperatures Any one of the above Atoms distributed in random pattern ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Steel contains 50% or more iron Alloying elements like chromium, tungsten nickel and copper 80% or more iron Elements like phosphorus, sulphur and silicon in varying quantities 50% or more iron Alloying elements like chromium, tungsten nickel and copper 80% or more iron Elements like phosphorus, sulphur and silicon in varying quantities ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Inconel contains 80% nickel and 20% chromium 65% nickel, 15% chromium and 20% iron 80% nickel, 14% chromium and 6% iron 68% nickel, 29% copper and 3% other constituents 80% nickel and 20% chromium 65% nickel, 15% chromium and 20% iron 80% nickel, 14% chromium and 6% iron 68% nickel, 29% copper and 3% other constituents ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The cupola is used to manufacture Wrought iron Steel Pig iron Cast iron Wrought iron Steel Pig iron Cast iron ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Manganese in steel increases its Tensile strength Hardness Ductility Fluidity Tensile strength Hardness Ductility Fluidity ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Duralumin contains 3.5 to 4.5% copper, 1.2 to 1.7% manganese, 1.8 to 2.3% nickel, 0.6% each of silicon, magnesium and iron, and rest aluminium 5 to 6% tin, 2 to 3% copper and rest aluminium 4 to 4.5% magnesium, 3 to 4% copper and rest aluminium 3.5 to 4.5% copper, 0.4 to 0.7% magnesium, 0.4 to 0.7% manganese and rest aluminium 3.5 to 4.5% copper, 1.2 to 1.7% manganese, 1.8 to 2.3% nickel, 0.6% each of silicon, magnesium and iron, and rest aluminium 5 to 6% tin, 2 to 3% copper and rest aluminium 4 to 4.5% magnesium, 3 to 4% copper and rest aluminium 3.5 to 4.5% copper, 0.4 to 0.7% magnesium, 0.4 to 0.7% manganese and rest aluminium ANSWER DOWNLOAD EXAMIANS APP
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