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Engineering Materials

Engineering Materials
The machinability of steel is improved by adding

Sulphur, lead and phosphorus
Nickel and chromium
Nickel
Chromium

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Engineering Materials
Aluminium bronze contains aluminium and copper in the ratio of

0.47916666666667
2.5277777777778
2.1180555555556
40 : 60

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Engineering Materials
The metal suitable for bearings subjected to heavy loads, is

Monel metal
Silicon bronze
Phosphor bronze
White metal

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Engineering Materials
Which of the following elements does not impart hardness to steel?

Chromium
Copper
Nickel
Silicon

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Engineering Materials
When the steel is normalized, its

Ultimate tensile strength increases
Ductility decreases
All of these
Yield point increases

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Engineering Materials
For the allotropic forms of iron, the points of arrest are

Constant for all metals
The points where there is no further flow of metal
The points of discontinuity
The points where no further change occurs

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