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Engineering Materials

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

RC 48
RC 65
RC 57
RC 80

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Engineering Materials
Balls for ball bearings are made of

Mild steel
Stainless steel
Cast iron
Carbon-chrome steel

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Engineering Materials
Steel made from phosphate iron is

Brittle
Ductile
Tough
Hard

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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
Sulphur
Manganese
Silicon

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Engineering Materials
In compression, a prism of brittle material will break

By crushing into thousands of pieces
By forming a bulge
By shearing along oblique plane
In direction perpendicular to application of load

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Engineering Materials
A reversible change in the atomic structure of the steel with a corresponding change in the properties is known as

Heat treatment
Allotropic change
Recrystallization
Precipitation

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MORE MCQ ON Engineering Materials

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