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Engineering Materials

Engineering Materials
The blade of a power saw is made of

Malleable cast iron
Boron steel
High speed steel
Stainless steel

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Engineering Materials
Which is false statement about case hardening? Case hardening is done by

Cyaniding
Nitriding
Electroplating
Induction hardening

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Engineering Materials
Bronze is an alloy of

Copper and tin
Copper, tin and zinc
Copper and zinc
None of these

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Engineering Materials
Following elements have face-centered cubic structure

Mg, Zn, Ti, Zr, Br, Cd
Gamma iron (910° to 1400°C), Cu, Ag, Au, Al, Ni, Pb, Pt
All of these
A iron (below 910°C and between 1400 to 1539°C), W

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Engineering Materials
When the steel is normalized, its

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

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Engineering Materials
The toughness of a material __________ when it is heated.

Increases
None of these
Remain same
Decreases

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