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In ECM, the material removal is due to

A. Corrosion

B. Erosion

C. Fusion

D. Ion displacement

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  1. The capacity of a material to be welded under the imposed fabrication conditions into a specific, suitably…
  2. The addition of lead, sulphur and phosphorus to low carbon steels, help to
  3. Flank wear depends upon the
  4. In metal machining, the zone where the heat is generated due to friction between the moving chip and…
  5. The process of removing metal by a cutter which is rotated in the same direction of travel of workpiece,…
  6. The enlarging of an existing circular hole with a rotating single point tool is called
  7. Cutting fluids are used to
  8. The operation performed on a shaper is
  9. A CNC vertical milling machine has to cut a straight slot of 10 mm width and 2mm depth by a cutter of…
  10. Dielectric is used in
  11. In up milling, the thickness of chip is
  12. Gear lapping is an operation
  13. Trepanning is an operation of
  14. Which of the following operations is carried out at a minimum cutting velocity if the machines are equally…
  15. A 15 mm drilling machine means that it can drill a hole
  16. The operation of making a cone-shaped enlargement of the end of a hole is known as
  17. Soft materials can not be economically ground due to
  18. If the diameter of the hole is subject to considerable variation, then for locating in jigs and fixtures,…
  19. The process of improving the cutting action of the grinding wheel is called
  20. The average cutting speed for turning mild steel with a high speed steel tool is
  21. The cutting speed for drilling aluminium, brass and bronze with high speed steel drills varies from
  22. When the tool moves parallel to the lathe axis, the movement is termed as
  23. What is the type of joining process called, where the parts to be welded are kept in contact and rotated…
  24. The usual value of the point angle of a drill is
  25. The type of tool used on lathe, shaper and planer is
  26. In order to grind soft material
  27. Thread grinding requires work speed from
  28. The specific cutting energy used for establishing the machinability of the metal depends upon its
  29. In up-cut milling the work piece is fed
  30. Calculate the weld per minute, work speed of circular electrode of 220 mm diameter for carrying out…