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The abrasive slurry used in ultrasonic machining contains fine particles of

A. Aluminium oxide

B. Boron carbide

C. Silicon carbide

D. Any one of these

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  1. Continuous chips with built up edge are formed during machining of
  2. The tailstock set over required to turn a taper on the entire length of a workpiece having diameters…
  3. The negative rake is usually provided on
  4. The tool life is said to be over if
  5. The depth of cut in drilling is __________ the drill diameter.
  6. Gear burnishing is a process for
  7. In Oxyacetylene gas welding, temperature at the inner cone of the flame is around
  8. The angle between the face and flank of the single point cutting tool is known as
  9. The process of removing metal by a cutter which is rotated in the same direction of travel of workpiece,…
  10. Which of the following statement is wrong?
  11. What is the type of welding defect caused due to poor deposition of weld rod is called?
  12. The high cutting speed and large rake angle of the tool will result in the formation of
  13. An open structure of a grinding wheel is used for
  14. A right hand tool on a lathe cuts most efficiently when it travels
  15. The specific cutting energy used for establishing the machinability of the metal depends upon its
  16. NC contouring is an example of
  17. The chamfering is an operation of
  18. In oblique cutting system, the maximum chip thickness
  19. When the metal is removed by erosion caused by rapidly recurring spark discharges between the tool and…
  20. A fixture is defined as a device which
  21. The type of reamer used for reaming soft aluminium or copper, is
  22. The relief or clearance at the cutting edge of a flat drill varies from
  23. Crater wear is mainly due to the phenomenon known as
  24. In the relation VTn = C, the value of n for ceramic tools is
  25. Which of the following statement is wrong as regard to down milling?
  26. Which of the following operations is carried out at a minimum cutting velocity if the machines are equally…
  27. The percentage of carbon in gray cast iron is in the range of
  28. While current is shut down in the welding circuit, what kind of voltage exists between the output terminals…
  29. A taper tap has
  30. In order to grind soft material