Chemical Engineering Basics
Salvage value is the most flexible criteria for analysing a financial investment. 'Salvaging' means

Disposing off machine/property, which is no longer useful in the present scenerio
Mortgaging the obsolete machine/property
Writing off the obsolete machine/ property
Disposing off a machine/property on as is where is basis

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

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
Relative motion between the billet surface and the container wall is always present

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