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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?

A. Ultrasonic welding

B. Forge welding

C. Electron beam welding

D. Friction welding

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  1. When the metal is removed by erosion caused by rapidly recurring spark discharges between the tool and…
  2. Continuous chips with built up edge are formed during machining of
  3. The main purpose of spheroidising treatment is to improve
  4. If the flame of the welding torch is directed towards the progress of welding, then what will you call…
  5. As the cutting speed increases, the tool cutting forces
  6. Friction at the tool-chip interface can be reduced by
  7. The helix angle of a drill is __________ for drilling brass.
  8. For machining a mild steel workpiece by a high speed steel tool, the average cutting speed is
  9. Trepanning is an operation of
  10. In down milling, the thickness of chip is
  11. In a single point tool, the angle between the surface of the flank immediately below the point and a…
  12. Calculate the weld per minute, work speed of circular electrode of 220 mm diameter for carrying out…
  13. Match the following metal forming processes with their associated stresses in the work piece. Metal…
  14. What type of fusion welding process is used for welding sheet metals of all engineering metals (except…
  15. The enlarging of an existing circular hole with a rotating single point tool is called
  16. The factor considered for evaluation of machinability is
  17. Thread grinding requires work speed from
  18. What is the name of the device used in arc welding circuits for the purpose of modifying the rate of…
  19. The cutting speed for drilling aluminium, brass and bronze with carbon steel drills is _________ cutting…
  20. The hole to be drilled for tapping is _________ the outside diameter of the thread on the tap.
  21. The abrasive recommended for grinding materials of low tensile strength is
  22. The cutting force in up milling __________ per tooth movement of the cutter.
  23. The angle on which the strength of the tool depends is
  24. The grade of grinding wheel depends upon
  25. When the shear angle is large
  26. The increase in depth of cut and feed rate __________ surface finish.
  27. The effective number of lattice points in the unit cell of simple cubic, body centred cubic, and face…
  28. The guideways are of
  29. The advantage of a broaching operation is that
  30. In metal cutting operations, the shear angle is the angle made by the shear plane with the