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Engineering Materials

Engineering Materials
German silver contains

2% silver
5% silver
1% silver
No silver

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Engineering Materials
Large forgings, crank shafts, axles normally contain carbon up to

0.55 to 1.0%
0.05 to 0.20%
0.20 to 0.45%
0.45 to 0.55%

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Engineering Materials
Which of the following pipes is least corrosion resistant?

Wrought iron
Brass
Mild steel
Cast iron

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Engineering Materials
Addition of copper to aluminium results in

One of the best known age and precipitation hardening systems
Improvement of casting characteristics
Improvement of corrosion resistance
Improving machinability

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Engineering Materials
When the steel is normalized, its

Ultimate tensile strength increases
All of these
Yield point increases
Ductility decreases

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

High speed steel
Stainless steel
Invar
Heat resisting steel

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