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Engineering Materials

Engineering Materials
German silver contains

1% silver
No silver
2% silver
5% silver

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Engineering Materials
Hardness of upper bainite (acicular structure) is about

RC 80
RC 65
RC 48
RC 57

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Engineering Materials
Body centered cubic space lattice is found in

None of these
Zinc, magnesium, cobalt, cadmium, antimony and bismuth
Alpha iron, tungsten, chromium and molybdenum
Gamma iron, aluminium, copper, lead, silver and nickel

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Engineering Materials
High carbon steel carries carbon percentage

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

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Engineering Materials
Heavy duty leaf and coil springs contain carbon of the following order

0.008
0.01
0.005
0.002

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Engineering Materials
Chromium when added to steel _________ the tensile strength.

Increases
Does not effect
None of these
Decreases

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