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Engineering Materials

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

Basic
Brittle
Acidic
Neutral

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

Sulphur
Zinc
Vanadium
Tin

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Engineering Materials
The tensile strength of wrought iron is maximum

Uniform in all directions
Along the lines of slag distribution
None of these
Perpendicular to lines of slag distribution

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Engineering Materials
Age-hardening is related with

German silver
Gun metal
Stainless steel
Duralumin

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Engineering Materials
Eutectoid steel contains following percentage of carbon

0.0063
0.003
0.008
0.0002

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Engineering Materials
Which is false statement about properties of aluminium?

Modulus of elasticity is fairly low
Fatigue strength is not high
Creep strength limits its use to fairly low temperatures
Wear resistance is very good

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