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Engineering Materials

Engineering Materials
An eutectoid steel consists of

Pearlite and ferrite
Pearlite and cementite
Wholly austenite
Wholly pearlite

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Engineering Materials
Corrosion resistance of steel is increased by addition of

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

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Engineering Materials
Drop forging dies contain carbon of the order of

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

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Engineering Materials
Addition of copper to aluminium results in

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

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Engineering Materials
Which of the following statements are true for annealing of steels?

Cooling is done slowly and steadily
Internal stresses are relieved
All of these
Steels are heated to 500 to 700°C

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Engineering Materials
Dye penetrant method is generally used to locate

Temporary defects
Core defects
Surface defects
Superficial defects

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