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Engineering Materials

Engineering Materials
Depth of hardness of steel is increased by addition of

Tungsten
Nickel
Chromium
Vanadium

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Engineering Materials
Corrosion resistance of steel is increased by adding

Nickel and molybdenum
Tungsten and sulphur
Chromium and nickel
Aluminium and zinc

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Engineering Materials
If a refractory contains high content of silicon, it means refractory is

Acidic
Brittle
Basic
Neutral

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

RC 65
RC 48
RC 80
RC 57

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Engineering Materials
The hardness of steel primarily depends on

Heat treatment employed
Percentage of alloying elements
Shape of carbides and their distribution in iron
Percentage of carbon

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Engineering Materials
Drop forging dies contain carbon of the order of

0.1 to 0.2%
0.7 to 0.9%
0.25 to 0.5%
0.6 to 0.7%

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MORE MCQ ON Engineering Materials

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