Crater wear is mainly due to the phenomenon known as

A. Adhesion of metals

B. Oxidation of metals

C. Diffusion of metals

D. All of these

Please do not use chat terms. Example: avoid using "grt" instead of "great".

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  1. The angle between the lathe centres is
  2. A bottoming tap has
  3. NC contouring is an example of
  4. In hot machining, the work is heated by
  5. In order to prevent tool from rubbing the work _________ on tools are provided.
  6. The maximum production of small and slender parts is done by
  7. In a plain milling cutter, the chip space between the back of one tooth and the face of the next tooth…
  8. Negative rakes are used for
  9. The cutting speed for drilling copper with high speed steel drills varies from
  10. In machining metals, chips break due to __________ of work material.
  11. In centreless grinding, work place centre will be
  12. The cutting force in up milling __________ per tooth movement of the cutter.
  13. The floating position of the holding fixture in a rotary transfer device is used to
  14. The crystal structure of austenite is
  15. Two plates of the same metal having equal thickness are to be butt welded with electric arc. When the…
  16. The example of snag grinding is
  17. The tool made of cemented carbide wear out faster at
  18. A better machinable metal is one which gives
  19. The cutting fluid mostly used for machining steel is
  20. Gears can be best produced on mass production by
  21. If the flame of the welding torch is directed towards the progress of welding, then what will you call…
  22. Low helix angle drills are preferred for drilling holes in
  23. In transverse grinding
  24. Two streams of liquid metal which are not hot enough to fuse properly result into a casting defect known…
  25. Crater wear leads to
  26. Continuous chips with built up edge are formed during machining of
  27. For turning internal tapers, the suitable method is
  28. In drilling Bakelite and fibrous plastics, the point angle of a drill is
  29. In reaming process
  30. Drilling is an example of