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 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 5 to 6% tin, 2 to 3% copper 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 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 5 to 6% tin, 2 to 3% copper and rest aluminium ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Super conduction by metals is observed in the temperature range of Below 10°K Above 100°K Around 0°C Around 100°C Below 10°K Above 100°K Around 0°C Around 100°C ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Cemented carbide tools are not found to be suitable for cutting Aluminium Brass Steel Cast iron Aluminium Brass Steel Cast iron ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Hardness of upper bainite (acicular structure) is about RC 48 RC 65 RC 80 RC 57 RC 48 RC 65 RC 80 RC 57 ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The ratio of the volume occupied by the atoms to the total volume of the unit cell is called Atomic packing factor Coordination number None of these Space lattice Atomic packing factor Coordination number None of these Space lattice ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Shock resisting steels should have Toughness Low tensile strength Low hardness Low wear resistance Toughness Low tensile strength Low hardness Low wear resistance ANSWER DOWNLOAD EXAMIANS APP
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