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Engineering Materials

Engineering Materials
Tungsten when added to steel __________ the critical temperature.

Raises
None of these
Lowers
Does not effect

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Engineering Materials
Hardness of martensite is about

RC 48
RC 65
RC 80
RC 57

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Engineering Materials
The percentage carbon content in wrought iron is about

0.1
0.02
2
0.4

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Engineering Materials
In the lower part of the blast furnace (zone of fusion), the temperature is

1200°C to 1300°C
1500°C to 1700°C
400° to 700°C
800°C to 1000°C

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Engineering Materials
By severely deforming a metal in a particular direction it becomes

Anisotropic
Ductile
Malleable
Homogeneous

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Engineering Materials
Induction hardening is the process of

Increasing hardness throughout
Hardening surface of work-piece to obtain hard and wear resistant surface
Heating and cooling rapidly
Inducing hardness by continuous process

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