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Engineering Materials

Engineering Materials
The machinability of steel is improved by adding

Nickel and chromium
Chromium
Sulphur, lead and phosphorus
Nickel

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Engineering Materials
The aluminium alloy, mainly used, for anodized utensil manufacture, is

Magnalium
Y-alloy
Duralumin
Hindalium

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Engineering Materials
Malleability of a material can be defined as

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

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Engineering Materials
The lower critical temperature

Increases as the carbon content in steel increases
Decreases as the carbon content in steel increases
Is same for all steels
Depends upon the rate of heating

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Engineering Materials
The percentage of carbon in low carbon steel is

0.3%
0.05%
0.15%
0.5%

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Engineering Materials
Which of the following has a fine gold colour and is used for imitation jewellery?

Babbitt metal
Gun metal
Silicon bronze
Aluminium bronze

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