Manufacturing And Production Technology
What is the type of joining process called, where the parts to be welded are kept in contact and rotated relative to each other and axial pressure is applied when the desired temperature is obtained?

Ultrasonic welding
Forge welding
Friction welding
Electron beam welding

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Manufacturing And Production Technology
The chamfering is an operation of

Reducing the diameter of a workpiece over a very narrow surface
Beveling the extreme end of a workpiece
Embossing a diamond shaped pattern on the surface of a workpiece
Enlarging the end of a hole cylindrically

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