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Engineering Materials

Engineering Materials
Balls for ball bearings are made of

Mild steel
Stainless steel
Carbon-chrome steel
Cast iron

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Engineering Materials
Steel made from phosphate iron is

Ductile
Hard
Tough
Brittle

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Engineering Materials
Which is false statement about normalizing? Normalizing is done to

Induce stresses
Improve mechanical properties
Refine grain structure
Reduce segregation in casting

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Engineering Materials
The purpose of heat treatment is to

Modify the structure of the material
Any one of these
Relieve the stresses set up in the material after hot or cold working
Change grain size

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

Hot tempering
Fatigue
Hot hardness
Creep

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Engineering Materials
The compressive strength of cast iron is __________that of its tensile strength.

More than
None of these
Less than
Equal to

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