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Engineering Materials

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

Ductility
Malleability
Plasticity
Elasticity

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Engineering Materials
Which is false statement about tempering? Tempering is done to

Release stresses
Improve toughness
Improve machinability
Improve ductility

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Engineering Materials
The addition of which of the following improves machining of copper?

Tin
Sulphur
Zinc
Vanadium

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Engineering Materials
Which of the following has highest specific strength of all structural materials?

Chromium alloys
Titanium alloys
Magnesium alloys
Magnetic steel alloys

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

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

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Engineering Materials
Corrosion resistance of steel is increased by adding

Nickel and molybdenum
Chromium and nickel
Tungsten and sulphur
Aluminium and zinc

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