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High speed steel drills can be operated at about _________ the speed of high carbon steel drills.

A. One-half

B. One-fourth

C. Double

D. Four times

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  1. Match the items of List-I (Equipment) with the items of List-II (Process) and select the correct answer…
  2. The size of abrasive grain required in a grinding wheel depends upon the
  3. In metal machining, the zone where the maximum heat is generated due to the plastic deformation of metal,…
  4. The lathe spindles at the nose end have
  5. A coarse grained grinding wheel is used to grind
  6. The angle between the lathe centres is
  7. Which of the following operations is carried out at a minimum cutting velocity if the machines are equally…
  8. Which among the NC operations given below are continuous path operations? Arc Welding (AW), Drilling…
  9. Two 1 mm thick steel sheets are to be spot welded at a current of 5000 A. Assuming effective resistance…
  10. While current is shut down in the welding circuit, what kind of voltage exists between the output terminals…
  11. The high cutting speed and large rake angle of the tool will result in the formation of
  12. High speed steel cutting tools operate at cutting speeds _________ than carbon steel tools.
  13. In a single point tool, the angle between the surface of the flank immediately below the point and a…
  14. The point angle of a drill, for drilling stainless steel, is
  15. The abrasive recommended for grinding materials of high tensile strength is
  16. In grinding irregular, curved, tapered, convex and concave surfaces, the grinder used is
  17. What is the method of brazing used to join relatively small assemblies made from materials that either…
  18. Which of the following statement is wrong?
  19. The work or surface speed for cylindrical grinding varies from
  20. The width of cutting edge of a parting off tool varies from
  21. In a centre lathe, the cutting tool is fed in _________ with reference to the lathe axis.
  22. In centreless grinding, work place centre will be
  23. The ductile materials, during machining, produce
  24. The capacity of a material to be welded under the imposed fabrication conditions into a specific, suitably…
  25. Which of the following statement is correct about EDM machining?
  26. The process of changing the shape of grinding wheel as it becomes worn due to breaking away of the abrasive…
  27. The aluminium oxide abrasive is chiefly used for grinding
  28. The structure of a grinding wheel depends upon
  29. In machining metal, cutting force at the cutting edge is measured by a
  30. A 15 mm drilling machine means that it can drill a hole