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Engineering Materials

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

Equal to
More than
None of these
Less than

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Engineering Materials
By severely deforming a metal in a particular direction it becomes

Homogeneous
Anisotropic
Malleable
Ductile

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Engineering Materials
When low carbon steel is heated up to upper critical temperature

The grain size increases very rapidly
The average grain size is a minimum
There is no change in grain size
The grain size first increases and then decreases very rapidly

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Engineering Materials
German silver is an alloy of

Refined silver
Nickel and copper
Nickel, Copper and zinc
Silver and some impurities

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Engineering Materials
Hematite iron ore contains iron about

0.3
0.45
0.55
0.7

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Engineering Materials
Dye penetrant method is generally used to locate

Temporary defects
Surface defects
Core defects
Superficial defects

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