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Engineering Materials

Engineering Materials
Age hardening is related to

Duralumin
Copper
Silver
Brass

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Engineering Materials
In low carbon steels, ________ raises the yield point and improves the resistance to atmospheric corrosion.

Sulphur
Silicon
Manganese
Phosphorus

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Engineering Materials
When a steel containing __________ 0.8% carbon is cooled slowly below the lower critical point, it consists of ferrite and pearlite.

Equal to
Less than
More than
None of these

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Engineering Materials
Sulphur in steel

Acts as deoxidiser
Decreases tensile strength and hardness
Reduces the grain size
Lowers the toughness and transverse ductility

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Engineering Materials
Cartridge brass can be

Drawn into wires
Any one of these
Cold rolled into sheets
Formed into tube

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Engineering Materials
The silicon steel is widely used for

Cutting tools
Motor car crankshafts
Generators and transformers in the form of laminated cores
Connecting rods

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