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The helix angle of a drill is __________ for drilling brass.

A. Equal to 30°

B. Less than 30°

C. More than 30°

D. None of these

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  1. The operation in which oil is permeated into the pores of a powder metallurgy product is known as
  2. A jig is defined as a device which
  3. The lip angle of a single point tool is usually
  4. As the cutting speed increases, the tool cutting forces
  5. A single point thread cutting tool should ideally hav
  6. Calculate the weld per minute, work speed of circular electrode of 220 mm diameter for carrying out…
  7. In centreless grinding, work place centre will be
  8. The drill spindles are provided with standard taper known as
  9. The average cutting speed for turning mild steel with a high speed steel tool is
  10. In a centre lathe, the cutting tool is fed in _________ with reference to the lathe axis.
  11. Down milling is also called
  12. A fixture is defined as a device which
  13. In ECM, the material removal is due to
  14. Drilling is an example of
  15. Chip breakers are used to
  16. Which of the following statement is incorrect with reference of lathe cutting tools?
  17. A grinding wheel becomes glazed (i.e. cutting edge takes a glasslike appearance) due to
  18. The method of centre less grinding used to produce taper is
  19. The guideways are of
  20. An open structure of a grinding wheel is used for
  21. In down milling, the thickness of chip is
  22. A better machinable metal is one which gives
  23. In American Standard Association (A S A) system, if the tool nomenclature is 8-6-5-5-10-15-2 mm, then…
  24. Tool life is generally better when
  25. Segmental chips are formed during machining
  26. In a metal arc welding process, a gas metal arc welding with magnetized flux is used and can be done…
  27. The common welding error that occurs due to shrinkage of weld metal, faulty clamping of parts, faulty…
  28. In _________ operation, the cutting force is maximum when the tooth begins its cut and reduces it to…
  29. A 15 mm drilling machine means that it can drill a hole
  30. The size of a shaper is given by