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Engineering Materials

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

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

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Engineering Materials
Surveying tapes are made of a material having low coefficient of expansion and enough strength. The alloy used is

Invar
Duralumin
Hastelloy
Silver metal

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Engineering Materials
Pearlite consists of

13% carbon and 87% ferrite
13% ferrite and 87% cementite
6.67% carbon and 93.33% iron
13% cementite and 87% ferrite

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Engineering Materials
Maximum percentage of carbon in ferrite is

0.0006
0.0025
0.00025
0.001

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Engineering Materials
Nickel when added to copper improves

Hardness
Machinability
Hardness and strength
Strength and ductility

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Engineering Materials
German silver contains

5% silver
No silver
1% silver
2% silver

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MORE MCQ ON Engineering Materials

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