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Engineering Materials

Engineering Materials
The elastic stress strain behavior of rubber is

Linear
Plastic
Nonlinear
No fixed relationship

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Engineering Materials
Recrystallization temperature can be lowered by

Working at lower temperature
All of these
Purification of metal
Grain refinement

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Engineering Materials
Large forgings, crank shafts, axles normally contain carbon up to

0.45 to 0.55%
0.55 to 1.0%
0.05 to 0.20%
0.20 to 0.45%

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

RC 65
RC 80
RC 57
RC 48

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Engineering Materials
According to Indian standard specifications, plain carbon steel designated by 40 C8 means that the carbon content is

0.4 to 0.6%
0.0004
0.6 to 0.8%
0.35 to 0.45%

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Engineering Materials
Which of the following is the binding material in cemented carbides?

Iron
Vanadium
Cobalt
Nickel

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