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Materials and Construction

Materials and Construction
Cast iron and steel pipes are produced by __________ casting.

Investment
Slush
True centrifugal
Die

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Materials and Construction
Ability of a material to __________ is indicated by its damping capacity.

Absorb vibration
None of these
Absorb shock
Withstand compression

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Materials and Construction
Which of the following has a very high carbide forming tendency in steels?

Silicon
Chromium
Nickel
Vanadium

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Materials and Construction
Which of the following is universally employed as the low expansion metal in the bimetallic thermometer, which is an iron-nickel alloy containing 36% nickel and has very low co-efficient of expansion (l/20th of ordinary metals)?

Chromel
Invar
Alumel
Constantan

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Materials and Construction
Silicone rubber is not resistant to the corrosive action of

Ether
Sulphuric acid (95%)
Both B and C
Sulphuric acid (10%)

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Materials and Construction
The temperature at which new grains are formed in the metal is called the __________ temperature.

Recrystallisation
Lower critical
Upper critical
Eutectic

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