In ultrasonic machining, the metal is removed by

A. Using abrasive slurry between the tool and work

B. Direct contact of tool with the work

C. Maintaining an electrolyte between the work and tool in a very small gap between the two

D. Erosion caused by rapidly recurring spark discharges between the tool and work

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

You can do it
  1. The parameter which completely defines the chip formation in a metal cutting process is
  2. When the cutting edge of the tool is dull, then during machining
  3. When two main plates are kept in alignment butting each other and riveted with cover plate on both sides…
  4. The chuck preferred for quick setting and accurate centering of a job is
  5. If the diameter of the hole is subject to considerable variation, then for locating in jigs and fixtures,…
  6. Twist drills are made of
  7. The effect of setting a boring tool above centre height leads to
  8. In a plain milling cutter, the chip space between the back of one tooth and the face of the next tooth…
  9. As the cutting speed increases, the tool cutting forces
  10. Which of the following statement is wrong?
  11. In an interchangeable assembly, shafts of size 25.000 -0.0100⁺⁰⁰⁴⁰…
  12. Gear burnishing is a process for
  13. A tool used to withdraw a drill from the sleeve is called
  14. The average cutting speed for turning brass with a high speed steel tool is
  15. Which of the following statement is correct regarding grinding of high carbon steel?
  16. The usual value of the point angle of a drill is
  17. What is the type of welding defect caused due to poor deposition of weld rod is called?
  18. For turning small taper on long workpiece, the suitable method is
  19. The cutting speed of a drill depends upon the
  20. Flank wear occurs mainly on the
  21. The angle on which the strength of the tool depends is
  22. The grinding wheel speed (surface speed in m/min) usually varies from
  23. The surface finish is improved by the increase in
  24. The operation of making a cone-shaped enlargement of the end of a hole is known as
  25. A grinding wheel becomes glazed (i.e. cutting edge takes a glasslike appearance) due to
  26. Calculate the weld per minute, work speed of circular electrode of 220 mm diameter for carrying out…
  27. What is the welding defect caused due to improper control and poor removal of slog between passes called?
  28. The material which on machining produces chips with built up edge is
  29. Two plates of the same metal having equal thickness are to be butt welded with electric arc. When the…
  30. The guideways are of