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Engineering Materials

Engineering Materials
Quenching is not necessary when hardening is done by

Flame hardening
Case hardening
Nitriding
Any one of these

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Engineering Materials
Induction hardening is the process of

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

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Engineering Materials
The percentage of carbon in low carbon steel is

0.15%
0.05%
0.5%
0.3%

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

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

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Engineering Materials
The percentage carbon content in wrought iron is about

0.4
2
0.02
0.1

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Engineering Materials
Slow plastic deformation of metals under a constant stress is known as

Fatigue
Creep
Endurance
Plastic deformation

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