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Engineering Materials

Engineering Materials
The property of a material which enables it to retain the deformation permanently, is called

Malleability
Brittleness
Plasticity
Ductility

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Engineering Materials
Bronze is an alloy of

None of these
Copper and zinc
Copper and tin
Copper, tin and zinc

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Engineering Materials
The lower critical point for all steels is

723°C
700°C
913°C
600°C

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Engineering Materials
Which of the following property is desirable in parts subjected to shock and impact loads?

Toughness
Strength
Stiffness
Brittleness

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Engineering Materials
The presence of sulphur in pig iron makes

The casting unsound
It brittle
It easily machinable
It hard

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Engineering Materials
Which of the following statements are true for annealing of steels?

Steels are heated to 500 to 700°C
Internal stresses are relieved
All of these
Cooling is done slowly and steadily

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