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Engineering Materials

Engineering Materials
Blast furnace produces following by reduction of iron ore

Malleable iron
Pig iron
Wrought iron
Cast iron

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Engineering Materials
Which of the following is not the correct method of increasing fatigue limit?

Nitriding of surface
Cold working
Shot peening
Surface decarburisation

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Engineering Materials
Nickel when added to copper improves

Hardness and strength
Hardness
Machinability
Strength and ductility

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Engineering Materials
Manganese in steel increases its

Fluidity
Ductility
Hardness
Tensile strength

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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
Preheating is essential in welding

High speed steel
All of these
Cast iron
All nonferrous materials

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