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Materials and Construction

Materials and Construction
Tin coating is not done by

Electro deposition
Hot dipping
Vaporising
Spraying

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Materials and Construction
Steel balls for ball bearings are generally made of __________ steel.

Stainless
Free carbon
Carbon chrome
Cast

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Materials and Construction
With increase in the carbon percentage in the steel, its

Tensile strength increases
Ductility reduces
All of these
Hardness increases

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Materials and Construction
Babbit metal used for bearings is a____base alloy.

Tin
Lead
Aluminium
Copper

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Materials and Construction
Purity of electrical grade aluminium should be ≥ __________ percent.

99.5
85
90
95

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Materials and Construction
Bearings subjected to light load are made of

Silicon bronze
Monel
White metal
Phosphorous bronze

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