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Thread grinding requires work speed from

A. 1 to 3 m/min

B. 5 to 10 m/min

C. 10 to 14 m/min

D. 14 to 20 m/min

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  1. Dielectric is used in
  2. If the diameter of the hole is subject to considerable variation, then for locating in jigs and fixtures,…
  3. The method of grinding used to produce internal cylindrical holes and tapers, is
  4. The cutting angle of a flat drill varies from
  5. In machining metal, cutting force at the cutting edge is measured by a
  6. In a CNC program block, N002 GO2 G91 X40 Z40......, GO2 and G91 refer to
  7. The rake angle required to machine brass by high speed steel tool is
  8. Which of the following engineering materials is the most suitable candidate for hot chamber die casting?
  9. What is the type of welding defect caused due to poor manipulation of weld rod or a dirty joint called?
  10. The ratio between two consecutive spindle speeds for a six-speed drilling machine using drills of diameter…
  11. The strength of a brazed joint
  12. The crystal structure of austenite is
  13. The helix angle of a drill is __________ for drilling brass.
  14. For fast removal of materials during grinding, a _________ grinding wheel is used.
  15. A mandrel is used to hold
  16. The taper on the lathe spindle is
  17. The lathe spindles are usually made hollow and provided with
  18. Drilling is an example of
  19. A broach has
  20. The tailstock set over required to turn a taper on the entire length of a workpiece having diameters…
  21. When the tool moves parallel to the lathe axis, the movement is termed as
  22. Misrun is a casting defect which occurs due to
  23. A dense structure of a grinding wheel is used for
  24. The surface finish is improved by the increase in
  25. The grade of grinding wheel depends upon
  26. A push broach as compared to pull broach
  27. The operation of making a cone-shaped enlargement of the end of a hole is known as
  28. The tool life is affected by
  29. A fine grained grinding wheel is used to grind
  30. In order to have interference fit, it is essential that the lower limit of the shaft should be