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Engineering Materials

Engineering Materials
In nodular iron, graphite is in the form of

Free carbon
Cementite
Flakes
Spheroids

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

Magnalium
Hindalium
Duralumin
Y-alloy

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Engineering Materials
The addition of which of the following improves machining of copper?

Tin
Sulphur
Zinc
Vanadium

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Engineering Materials
The steel widely used for motor car crankshafts is

Nickel steel
Silicon steel
Nickel-chrome steel
Chrome steel

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Engineering Materials
The portion of the blast furnace below its widest cross-section is called

Throat
Hearth
Bosh
Stack

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Engineering Materials
When low carbon steel is heated up to upper critical temperature

The grain size increases very rapidly
There is no change in grain size
The grain size first increases and then decreases very rapidly
The average grain size is a minimum

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