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Engineering Materials

Engineering Materials
Shock resistance of steel is increased by adding

Chromium
Nickel
Sulphur, lead and phosphorus
Nickel and chromium

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Engineering Materials
Constantan an alloy used in thermocouples is an alloy of

Copper and nickel
Copper and tin
Copper and zinc
Copper and iron

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Engineering Materials
Nodular cast iron is produced by adding ________ to the molten cast iron.

Nickel
Copper
Chromium
Magnesium

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Engineering Materials
The machinability of steel is improved by adding

Sulphur, lead and phosphorus
Nickel
Nickel and chromium
Chromium

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Engineering Materials
Addition of manganese to aluminium results in

One of the best known age and precipitation hardening systems
Improvement of casting characteristics
Improvement of corrosion resistance
Improving machinability

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Engineering Materials
Bell metal contains

90% copper and 10% tin
70% copper and 30% zinc
85 - 92% copper and rest tin with little lead and nickel
70 - 75% copper and rest tin

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