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Engineering Materials

Engineering Materials
Manganese in steel increases its

Hardness
Fluidity
Tensile strength
Ductility

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Engineering Materials
Which of the following has a fine gold colour and is used for imitation jewellery?

Aluminium bronze
Babbitt metal
Gun metal
Silicon bronze

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Engineering Materials
Nodular cast iron is produced by adding ________ to the molten cast iron.

Copper
Chromium
Nickel
Magnesium

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Engineering Materials
Compressive strength of grey cast iron in tonnes/cm is of the order of

710
1015
57
35

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Engineering Materials
Dislocations in materials refer to the following type of defect

Point defect
Plane defect
Line defect
Volumetric defect

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Engineering Materials
Which of the following impurity in cast iron makes it hard and brittle?

Phosphorus
Manganese
Silicon
Sulphur

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