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Engineering Materials

Engineering Materials
The following element can't impart high strength at elevated temperature

Nickel
Magnesium
Manganese
Silicon

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Engineering Materials
Process of Austempering results in

Formation of bainite structure
Carburised structure
Martenistic structure
Lamellar layers of carbide distributed throughout the structure

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Engineering Materials
Addition of silicon to aluminium results in

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

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Engineering Materials
Iron-carbon alloys containing 1.7 to 4.3% carbon are known as

None of these
Eutectic cast irons
Hypereutectic cast irons
Hypoeutectic cast irons

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Engineering Materials
Age hardening is related to

Copper
Duralumin
Silver
Brass

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Engineering Materials
According to Indian standard specifications, plain carbon steel designated by 40 C8 means that the carbon content is

0.35 to 0.45%
0.6 to 0.8%
0.0004
0.4 to 0.6%

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