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Engineering Materials

Engineering Materials
Taps dies and drills contain carbon

Below 1%
Below 0.5%
Above 2.2%
Above 1%

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Engineering Materials
The hardness of steel primarily depends on

Heat treatment employed
Shape of carbides and their distribution in iron
Percentage of carbon
Percentage of alloying elements

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Engineering Materials
The heat treatment process used for softening hardened steel is

Normalizing
Annealing
Carburising
Tempering

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Engineering Materials
Addition of lead and bismuth to aluminium results in

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

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Engineering Materials
Surveying tapes are made of a material having low coefficient of expansion and enough strength. The alloy used is

Invar
Duralumin
Hastelloy
Silver metal

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Engineering Materials
Super conduction by metals is observed in the temperature range of

Below 10°K
Around 100°C
Above 100°K
Around 0°C

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MORE MCQ ON Engineering Materials

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