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Engineering Materials

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

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

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Engineering Materials
The ability of a material to resist softening at high temperature is known as

Fatigue
Hot tempering
Creep
Hot hardness

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Engineering Materials
Sulphur in cast iron

Make the iron white and hard
Makes the iron soft and easily machinable
Aids fusibility and fluidity
Increases hardness and brittleness

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Engineering Materials
The strength is the ability of a material to resist

None of these
Deformation under stress
Externally applied forces with breakdown or yielding
Fracture due to high impact loads

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Engineering Materials
When steel containing less than 0.8% carbon is cooled slowly from temperatures above or within the critical range, it consists of

Mainly ferrite
Mainly pearlite
Ferrite and pearlite
Pearlite and cementite

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Engineering Materials
Addition of copper to aluminium results in

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

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MORE MCQ ON Engineering Materials

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