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Engineering Materials

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

Induction hardening
Electroplating
Cyaniding
Nitriding

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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
Which of the following property is desirable for materials used in tools and machines?

Plasticity
Malleability
Ductility
Elasticity

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Engineering Materials
The heat treatment process used for softening hardened steel is

Annealing
Tempering
Carburising
Normalizing

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Engineering Materials
Ductility of a material can be defined as

Ability to recover its original form
All of these
Ability to undergo large permanent deformations in compression
Ability to undergo large permanent deformations in tension

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Engineering Materials
The hardness of steel primarily depends on

Percentage of carbon
Shape of carbides and their distribution in iron
Heat treatment employed
Percentage of alloying elements

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