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Engineering Materials

Engineering Materials
Which is false statement about case hardening? Case hardening is done by

Electroplating
Cyaniding
Nitriding
Induction hardening

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

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

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

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

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Engineering Materials
Process of Austempering results in

Formation of bainite structure
Lamellar layers of carbide distributed throughout the structure
Carburised structure
Martenistic structure

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Engineering Materials
The transistor is made of

Germanium
Silver
Gold
Copper

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Engineering Materials
The alloying element which increases residual magnetism and coercive magnetic force in steel for magnets is

Chromium
Cobalt
Vanadium
Nickel

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MORE MCQ ON Engineering Materials

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