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Engineering Materials

Engineering Materials
Chromium when added to steel _________ the tensile strength.

Increases
Decreases
None of these
Does not effect

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Engineering Materials
Induction hardening is basically a

None of these
Core hardening process
Surface hardening process
Carburising process

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Engineering Materials
The purpose of heat treatment is to

Relieve the stresses set up in the material after hot or cold working
Change grain size
Modify the structure of the material
Any one of these

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Engineering Materials
Which of the following when used in ordinary low carbon steels, makes the metal ductile and of good bending qualities?

Phosphorus
Manganese
Sulphur
Silicon

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Engineering Materials
1841 high speed steel contains

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

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Engineering Materials
Dislocations in materials refer to the following type of defect

Line defect
Point defect
Plane defect
Volumetric defect

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MORE MCQ ON Engineering Materials

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