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Engineering Materials

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

White metal
Monel metal
Phosphor bronze
Silicon bronze

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

Surface decarburisation
Nitriding of surface
Shot peening
Cold working

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Engineering Materials
Phosphor bronze contains

2.5% phosphorous
1% phosphorous
None of these
0.5% of phosphorous

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Engineering Materials
The material in which the atoms are arranged regularly in some directions but not in others, is called

Amorphous material
Crystalline material
Mesomorphous material
None of these

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Engineering Materials
Foundry crucible is made of

Lead
German silver
Mild steel
Graphite

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Engineering Materials
The percentage of carbon in grey iron castings usually varies between

5 to 7%
2.5 to 4.5%
0.012
0.5 to 1%

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