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Engineering Materials

Engineering Materials
An engineer's hammer is made of

Mild steel
Forged steel
High carbon steel
Cast iron

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Engineering Materials
The electric process of steel making is especially adapted to

All of these
Magnet steel
Alloy and carbon tool steel
High speed tool steel

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Engineering Materials
If a refractory contains high content of silicon, it means refractory is

Brittle
Acidic
Neutral
Basic

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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
Which of the following constituents of steels is softest and least strong?

Austenite
Pearlite
Ferrite
Cementite

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Engineering Materials
Tensile strength of steel can be safely increased by

Adding carbon up to 6.3%
Adding carbon up to 0.83%
Adding small quantities of copper
Adding carbon up to 2.8%

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