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Engineering Materials

Engineering Materials
Which of the following property is desirable for materials used in tools and machines?

Ductility
Malleability
Elasticity
Plasticity

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Engineering Materials
Maximum percentage of carbon in ferrite is

0.0006
0.0025
0.00025
0.001

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Engineering Materials
The hardness and tensile strength in austenitic stainless steel can be increased by

Martempering
Hardening and cold working
Normalizing
Full annealing

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

Basic
Acidic
Neutral
Brittle

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Engineering Materials
Sulphur in cast iron

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

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Engineering Materials
The lower critical temperature

Decreases as the carbon content in steel increases
Is same for all steels
Depends upon the rate of heating
Increases as the carbon content in steel increases

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