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ENGINEERING MATERIALS

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

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

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Engineering Materials
Hardness of lower bainite (tempered martensite) is about

RC 57
RC 80
RC 65
RC 48

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Engineering Materials
The compressive strength of cast iron is __________that of its tensile strength.

Equal to
Less than
More than
None of these

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

None of these
Does not effect
Decreases
Increases

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Engineering Materials
Shock resisting steels should have

Toughness
Low hardness
Low tensile strength
Low wear resistance

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