Q70
In extrusion of metals, which of the following statement is true ?
A.
Speed of the extruded material is same as that of ram speed
B.
Redundant work is a function of the die angle
C.
Relative motion between the billet surface and the container wall is always present
D.
Hollow ram is used for indirect extrusion
AnswerAnswer: Option D
Solution
Answer: Option D
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