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Engineering Materials

Engineering Materials
Preheating is essential in welding

Cast iron
All nonferrous materials
All of these
High speed steel

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Engineering Materials
Quenching is not necessary when hardening is done by

Case hardening
Flame hardening
Nitriding
Any one of these

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Engineering Materials
Cast iron is a

Ductile material
Tough material
Malleable material
Brittle material

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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 compression
All of these
Ability to undergo large permanent deformations in tension

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Engineering Materials
White metal contains

Alloy of tin, lead and cadmium
Silver and chromium
88% copper and 10% tin and rest zinc
63 to 67% nickel and 30% copper

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Engineering Materials
The machinability of aluminium increases when _________ is added to aluminium.

Magnesium
Lead and bismuth
Copper
Silicon

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MORE MCQ ON Engineering Materials

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