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Materials and Construction

Materials and Construction
A material is able to retain the deformation permanently by virtue of its

Ductility
Plasticity
Elasticity
Malleability

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Materials and Construction
The temperature at which new grains are formed in the metal is called the __________ temperature.

Eutectic
Recrystallisation
Lower critical
Upper critical

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Materials and Construction
The purpose of nitriding the steel is to

Soften its surface
None of these
Improve its reliability
Harden its surface

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Materials and Construction
Diamagnetic materials are magnetised

With eddy currents only
In a direction opposite to that of the applied field
Only slightly
Strongly

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Materials and Construction
The fermentor used in the production of pencillin (by deep fermentation process) is made of

Procelain
Glass
High silicon cast iron
Glass lined steel

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Materials and Construction
Slow plastic deformation of metals under a constant stress is termed as __________ failure.

Endurance
Creep
Fatigue
None of these

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