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Materials and Construction

Materials and Construction
Tempering of steel is done to make it

Rollable
Hard
Brittle
Soft

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Materials and Construction
Most of the common metals have __________ crystal structure.

Hexagonal
Orthorhombic
Cubic
None of these

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Materials and Construction
Wrought iron is having very high

Corrosion resistance
Strength
Hardness
Susceptibility to changes in its properties by heat treatment

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Materials and Construction
With increase in carbide/graphite ratio in cast iron, its

Hardness & brittleness increases
Both A & B
Ductility decreases
Neither A nor B

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Materials and Construction
Which of the following heat treatment processes is used for softening the hardened material?

Tempering
Normalising
None of these
Annealing

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Materials and Construction
Non-ferrous metals and hard steels do not exhibit a definite yield point, when pulled in the testing machine and hence for these cases, a better measure of their elastic properties is defined by the __________ stress.

Yield point
Ultimate
None of these
Proof

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