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Engineering Materials

Engineering Materials
Hardness of upper bainite (acicular structure) is about

RC 48
RC 57
RC 65
RC 80

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

Electroplating
Nitriding
Induction hardening
Cyaniding

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Engineering Materials
Crystal structure of a material is, generally, examined by

Metallurgical microscope
X-ray techniques
Optical microscope
Naked eye

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Engineering Materials
Which of the following impurity in cast iron promotes graphite nodule formation and increases the fluidity of the molten metal?

Silicon
Sulphur
Manganese
Phosphorus

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Engineering Materials
Grey cast iron has

All of these
High tensile strength
Low compressive strength
Carbon in the form of free graphite

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Engineering Materials
Ductility of a material can be defined as

Ability to recover its original form
Ability to undergo large permanent deformations in tension
Ability to undergo large permanent deformations in compression
All of these

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