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Engineering Materials

Engineering Materials
Shock resistance of steel is increased by adding

Chromium
Sulphur, lead and phosphorus
Nickel
Nickel and chromium

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Engineering Materials
Sulphur in cast iron

Makes the iron soft and easily machinable
Increases hardness and brittleness
Make the iron white and hard
Aids fusibility and fluidity

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Engineering Materials
Cast iron is a

Brittle material
Ductile material
Tough material
Malleable material

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Engineering Materials
The compressive strength of cast iron is __________that of its tensile strength.

None of these
More than
Less than
Equal to

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Engineering Materials
Which of the following when used in ordinary low carbon steels, makes the metal ductile and of good bending qualities?

Silicon
Phosphorus
Sulphur
Manganese

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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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