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Engineering Materials

Engineering Materials
The heat treatment process used for softening hardened steel is

Carburising
Tempering
Annealing
Normalizing

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Engineering Materials
Induction hardening is basically a

None of these
Surface hardening process
Carburising process
Core hardening process

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Engineering Materials
The hardness and tensile strength in austenitic stainless steel can be increased by

Normalizing
Martempering
Full annealing
Hardening and cold working

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Engineering Materials
The lower critical temperature

Is same for all steels
Increases as the carbon content in steel increases
Decreases as the carbon content in steel increases
Depends upon the rate of heating

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Engineering Materials
The material in which the atoms are arranged chaotically, is called

None of these
Crystalline material
Amorphous material
Mesomorphous material

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Engineering Materials
Admiralty brass used for steam condenser tubes contains copper and zinc in the following ratio

30 : 70
2.1180555555556
2.9375
40 : 60

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