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Engineering Materials

Engineering Materials
The alloying element which increases residual magnetism and coercive magnetic force in steel for magnets is

Chromium
Nickel
Cobalt
Vanadium

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

More than
Less than
Equal to
None of these

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Engineering Materials
Which is false statement about properties of aluminium?

Modulus of elasticity is fairly low
Creep strength limits its use to fairly low temperatures
Fatigue strength is not high
Wear resistance is very good

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Engineering Materials
Which of the following is not the correct method of increasing fatigue limit?

Surface decarburisation
Shot peening
Nitriding of surface
Cold working

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

Bronze
Gun metal
Babbitt metal
Bell metal

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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%
0.1 to 0.2%
0.6 to 0.7%

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