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Engineering Materials

Engineering Materials
The following element can't impart high strength at elevated temperature

Magnesium
Nickel
Silicon
Manganese

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Engineering Materials
1841 high speed steel contains

Vanadium 1%, chromium 4% and tungsten 18%
Vanadium 4%, chromium 18% and tungsten 1%
Vanadium 18%, chromium 1% and tungsten 4%
None of these

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Engineering Materials
Which of the following material has maximum ductility?

Copper
Nickel
Aluminium
Mild steel

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Engineering Materials
Tungsten in high speed steel provides

Hot hardness
Toughness
Sharp cutting edge
Wear resistance

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Engineering Materials
Which of the following element results in presence of free graphite in C.I.?

Manganese
Sulphur
Silicon
Carbon

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Engineering Materials
Which is false statement about annealing? Annealing is done to

Soften material
Harden steel slightly
Relieve stresses
Improve machining characteristic

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