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Engineering Materials

Engineering Materials
Eutectoid reaction occurs at

1493°C
600°C
723°C
1147°C

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

Line defect
Point defect
Plane defect
Volumetric defect

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Engineering Materials
In mottled cast iron, carbon is available in

Free form
Partly in free and partly in combined state
Combined form
Nodular form

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Engineering Materials
Process of Austempering results in

Formation of bainite structure
Carburised structure
Martenistic structure
Lamellar layers of carbide distributed throughout the structure

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

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

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Engineering Materials
The steel widely used for motor car crankshafts is

Silicon steel
Nickel steel
Chrome steel
Nickel-chrome steel

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