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Engineering Materials

Engineering Materials
Which of the following metal is used for nuclear energy?

All of these
Thorium
Niobium
Uranium

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Engineering Materials
Hardness of upper bainite (acicular structure) is about

RC 57
RC 48
RC 80
RC 65

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Engineering Materials
Which is the false statement about wrought iron? It has

High resistance to rusting and corrosion
Uniform strength in all directions
High ductility
Ability of hold protective coating

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Engineering Materials
Which of the following constituents of steels is softest and least strong?

Ferrite
Cementite
Austenite
Pearlite

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Engineering Materials
The temperature at which ferromagnetic alpha iron transforms to paramagnetic alpha iron is

910°C
Below recrystallization temperature
770°C
1050°C

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Engineering Materials
Hardness of lower bainite (tempered martensite) is about

RC 57
RC 65
RC 80
RC 48

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