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?

Forge welding
Ultrasonic welding
Electron beam welding
Friction welding

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Manufacturing And Production Technology
A fixture is defined as a device which

All of these
Holds and locates a workpiece and guides and controls one or more cutting tools
Holds and locates a workpiece during an inspection or for a manufacturing operation
Is used to check the accuracy of workpiece

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