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Engineering Materials

Engineering Materials
Depth of hardness of steel is increased by addition of

Chromium
Tungsten
Vanadium
Nickel

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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
Wear resistance is very good
Creep strength limits its use to fairly low temperatures

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Engineering Materials
Addition of lead and bismuth to aluminium results in

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

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

Mild steel
Wrought iron
Cast iron
Brass

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Engineering Materials
The temperature at which ferromagnetic alpha iron transforms to paramagnetic alpha iron is

910°C
Below recrystallization temperature
770°C
1050°C

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Engineering Materials
Weld decay is the phenomenon found with

Stainless steel
Mild steel
Nonferrous materials
Cast iron

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MORE MCQ ON Engineering Materials

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