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Engineering Materials

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

Does not effect
Increases
Decreases
None of these

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Engineering Materials
The metal suitable for bearings subjected to heavy loads, is

Silicon bronze
White metal
Monel metal
Phosphor bronze

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Engineering Materials
Which of the following is used for bearing liner?

Bronze
Gun metal
Bell metal
Babbitt metal

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Engineering Materials
Hardness of martensite is about

RC 65
RC 57
RC 48
RC 80

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Engineering Materials
Which of the following represents the allotropic forms of iron?

Alpha iron, gamma from and delta iron
Alpha iron, beta iron and gamma iron
Body centered cubic iron and face centered cubic iron
Alpha iron and beta iron

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Engineering Materials
The following element can't impart high strength at elevated temperature

Magnesium
Manganese
Silicon
Nickel

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