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Engineering Materials

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

Niobium
Thorium
Uranium
All of these

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Engineering Materials
Which of the following material has nearly zero coefficient of expansion?

Heat resisting steel
Invar
Stainless steel
High speed steel

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Engineering Materials
The ability of a material to resist softening at high temperature is known as

Hot hardness
Creep
Hot tempering
Fatigue

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Engineering Materials
The percentage of carbon in grey iron castings usually varies between

5 to 7%
2.5 to 4.5%
0.012
0.5 to 1%

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Engineering Materials
Induction hardening is basically a

None of these
Carburising process
Surface hardening process
Core hardening process

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Engineering Materials
White metal contains

88% copper and 10% tin and rest zinc
63 to 67% nickel and 30% copper
Silver and chromium
Alloy of tin, lead and cadmium

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