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Engineering Materials

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

Does not effect
Increases
Decreases
None of these

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Engineering Materials
The property of a material due to which it breaks with little permanent distortion, is called

Malleability
Brittleness
Ductility
Plasticity

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Engineering Materials
Constantan an alloy used in thermocouples is an alloy of

Copper and zinc
Copper and tin
Copper and nickel
Copper and iron

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Engineering Materials
A small percentage of boron is added to steel in order to

Increase hardenability
Reduce machinability
Increase endurance strength
Increase wear resistance

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Engineering Materials
Which of the following element results in presence of free graphite in C.I.?

Silicon
Carbon
Sulphur
Manganese

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Engineering Materials
Body centered cubic space lattice is found in

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

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