Chemical Engineering Basics
Powder metallurgy is used to produce

High precision components with complex cavities and sharp features
Components of such alloys whose constituents do not form alloys readily
Porosity free components
Components of large size

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Chemical Engineering Basics
In extrusion of metals, which of the following statement is true ?

Relative motion between the billet surface and the container wall is always present
Redundant work is a function of the die angle
Hollow ram is used for indirect extrusion
Speed of the extruded material is same as that of ram speed

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