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Materials and Construction

Materials and Construction
A material is able to retain the deformation permanently by virtue of its

Plasticity
Malleability
Ductility
Elasticity

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Materials and Construction
Age hardening is concerned with

Brass
Silver
Duralumin
Copper

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Materials and Construction
The increase in hardness of metal due to its cold working is termed as the __________ hardening.

Induction
Age
Flame
Work

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Materials and Construction
The high expansion metal normally used in the bimetallic thermometer is __________ temperature measurement.

Both A & B
Nickel alloys for high
Brass for low
Aluminium for all

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Materials and Construction
Water gas generator is made of

Carbon steel-brick lined
High carbon steel-procelain lined
Cast iron
Stainless steel-lead lined

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Materials and Construction
In cold working of metal as compared to its hot working

Appreciable strain hardening is produced
Yield stress, hardness and fatigue strength is not at all affected
Cracks and blow holes are eliminated
Ductility and impact strength improves

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