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Engineering Materials

Engineering Materials
The ability of a material to resist softening at high temperature is known as

Fatigue
Creep
Hot tempering
Hot hardness

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Engineering Materials
Nodular iron has

Low melting point
All of these
High tensile strength
High machinability

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Engineering Materials
Corrosion resistance of steel is increased by addition of

Chromium and nickel
Sulphur, phosphorus, lead
Tungsten, molybdenum, vanadium, chromium
Vanadium, aluminium

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

RC 57
RC 65
RC 48
RC 80

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Engineering Materials
Aluminium bronze contains aluminium and copper in the ratio of

2.5277777777778
0.47916666666667
40 : 60
2.1180555555556

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Engineering Materials
Addition of copper to aluminium results in

Improvement of casting characteristics
Improvement of corrosion resistance
One of the best known age and precipitation hardening systems
Improving machinability

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MORE MCQ ON Engineering Materials

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