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Engineering Materials

Engineering Materials
The alloying element which reduces the formation of iron sulphide in steel is

Manganese
Chromium
Nickel
Vanadium

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Engineering Materials
Isotropic materials are those which have the same

Stresses induced in all directions
Thermal properties in all directions
Elastic properties in all directions
Electric and magnetic properties in all directions

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Engineering Materials
The purpose of heat treatment is to

Modify the structure of the material
Any one of these
Change grain size
Relieve the stresses set up in the material after hot or cold working

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Engineering Materials
Maximum percentage of carbon in ferrite is

0.00025
0.0006
0.001
0.0025

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Engineering Materials
The charge is fed into the blast furnace through the

Bosh
Stack
Throat
Tyres

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Engineering Materials
Iron-carbon alloys containing 1.7 to 4.3% carbon are known as

Eutectic cast irons
Hypereutectic cast irons
Hypoeutectic cast irons
None of these

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