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Engineering Materials

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

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

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Engineering Materials
Shock resistance of steel is increased by adding

Chromium
Nickel
Nickel and chromium
Sulphur, lead and phosphorus

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

Creep
Plastic deformation
Fatigue
Endurance

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Engineering Materials
Steel containing ferrite and pearlite is

Hard and tough
Hard
Tough
Soft

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Engineering Materials
In nodular iron, graphite is in the form of

Spheroids
Cementite
Flakes
Free carbon

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Engineering Materials
Crystal structure of a material is, generally, examined by

X-ray techniques
Naked eye
Optical microscope
Metallurgical microscope

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