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Engineering Materials

Engineering Materials
Which of the following is an amorphous material?

Lead
Silver
Glass
Mica

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Engineering Materials
The strength is the ability of a material to resist

Fracture due to high impact loads
Deformation under stress
None of these
Externally applied forces with breakdown or yielding

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Engineering Materials
Constantan an alloy used in thermocouples is an alloy of

Copper and nickel
Copper and tin
Copper and iron
Copper and zinc

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Engineering Materials
Tensile strength of steel can be safely increased by

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

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Engineering Materials
Isotropic materials are those which have the same

Electric and magnetic properties in all directions
Stresses induced in all directions
Thermal properties in all directions
Elastic properties in all directions

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Engineering Materials
In low carbon steels, ________ raises the yield point and improves the resistance to atmospheric corrosion.

Silicon
Sulphur
Manganese
Phosphorus

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