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Engineering Materials

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

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

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Engineering Materials
Which of the following metal is used in making electrical resistance wire for electric furnaces and heating elements?

Phosphor bronze
Babbitt metal
Monel metal
Nichrome

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Engineering Materials
High carbon steel carries carbon percentage

0.8 to 1.5%
0.3 to 0.6%
0.1 to 0.3%
0.6 to 0.8%

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Engineering Materials
Maximum percentage of carbon in austenite is

0.008
0.00025
0.0026
0.017

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Engineering Materials
The lower critical point for all steels is

600°C
913°C
700°C
723°C

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Engineering Materials
An example of amorphous material is

Lead
Zinc
Glass
Silver

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