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Engineering Materials

Engineering Materials
Nickel when added to copper improves

Hardness
Strength and ductility
Hardness and strength
Machinability

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Engineering Materials
Hematite iron ore contains iron about

0.7
0.3
0.55
0.45

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Engineering Materials
Hardness of upper bainite (acicular structure) is about

RC 80
RC 57
RC 48
RC 65

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Engineering Materials
Body centered cubic space lattice is found in

Gamma iron, aluminium, copper, lead, silver and nickel
Zinc, magnesium, cobalt, cadmium, antimony and bismuth
Alpha iron, tungsten, chromium and molybdenum
None of these

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Engineering Materials
Which of the following material has nearly zero coefficient of expansion?

High speed steel
Stainless steel
Heat resisting steel
Invar

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Engineering Materials
The presence of hydrogen in steel causes

Reduced neutron absorption cross-section
Embrittlement
Improved Weldability
Corrosion resistance

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MORE MCQ ON Engineering Materials

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