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Engineering Materials

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

Increases
Does not effect
None of these
Decreases

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Engineering Materials
The percentage of carbon in low carbon steel is

0.3%
0.15%
0.05%
0.5%

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Engineering Materials
The alloy used for making electrical resistances and heating elements is

Elinvar
Magnin
Invar
Nichrome

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Engineering Materials
Which of the following has highest specific strength of all structural materials?

Chromium alloys
Magnesium alloys
Titanium alloys
Magnetic steel alloys

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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
Body centered cubic space lattice is found in

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

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