In electro-discharge machining, dielectric is used to

A. Help in the movement of the sparks

B. Control the spark discharges

C. Act as coolant

D. All of these

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  1. For machining a mild steel workpiece by a high speed steel tool, the average cutting speed is
  2. Segmental chips are formed during machining
  3. Broaching is applied for machining
  4. In centreless grinding, work place centre will be
  5. The maximum possible draft in cold rolling of sheet increases with the
  6. In up milling, the thickness of chip is
  7. In reaming process
  8. The hardness of a grinding wheel is specified by
  9. In a particular type of welding, flux is prepared in the form of a coarse powder and granulated flux…
  10. In machining metals, chips break due to __________ of work material.
  11. In an interchangeable assembly, shafts of size 25.000 -0.010⁺⁰⁰⁴⁰…
  12. Which of the following parameters influence the axial feed rate in centerless grinding?
  13. A bottoming tap has
  14. What type of fusion welding process is used for welding sheet metals of all engineering metals (except…
  15. The maximum production of small and slender parts is done by
  16. The obtuse angle, included between the chisel edge and the lip as viewed from the end of a drill, is…
  17. What is the type of welding defect caused due to shrinkage during solidification and by weld stresses…
  18. The average cutting speed for turning brass with a high speed steel tool is
  19. The angle between the lathe centres is
  20. The grinding wheel speed (surface speed in m/min) usually varies from
  21. Misrun is a casting defect which occurs due to
  22. Which of the following operation is first performed?
  23. The surface finish is improved by the increase in
  24. In centreless grinders, the regulating wheel is inclined at
  25. Glazing in grinding wheels __________ cutting capacity.
  26. The in-feed grinding is used to
  27. Tool signature consists of __________ elements.
  28. The saw milling is an operation of
  29. For machining a mild steel workpiece using carbide tool, the maximum material will be removed at a temperature…
  30. Gear lapping is an operation