A feed gear box for a screw cutting lathe is designed on the basis of

A. Geometric progression

B. Arithmetic progression

C. Harmonic progression

D. None of these

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  1. In an interchangeable assembly, shafts of size 25.000 -0.0100⁺⁰⁰⁴⁰…
  2. Threading is an operation of
  3. The tap used to cut threads in a blind hole is
  4. If the diameter of the hole is subject to considerable variation, then for locating in jigs and fixtures,…
  5. Which of the following statement is correct as regard to up milling?
  6. In a plain milling machine, the table can be moved
  7. The soft grade grinding wheels are denoted by the letters
  8. Which of the following statement is correct about nose radius?
  9. In centreless grinding, the surface speed of regulating wheel is
  10. Which of the following engineering materials is the most suitable candidate for hot chamber die casting?
  11. The lip angle of a single point tool is usually
  12. In reaming process
  13. An open structure of a grinding wheel is used for
  14. The operation in which oil is permeated into the pores of a powder metallurgy product is known as
  15. Which one among the following welding processes uses nonconsumable electrode?
  16. The cutting speed is minimum while machining _________ with a high speed steel tool.
  17. The helix angle of a drill is __________ for drilling brass.
  18. Small nose radius
  19. The grinding operation is a
  20. In a metal arc welding process, a gas metal arc welding with magnetized flux is used and can be done…
  21. When the temperature of a solid metal increases,
  22. A shaft has a dimension, φ9 +0.025⁺⁰⁰⁰⁹, the respective values…
  23. What is the type of joining process called, where the parts to be welded are kept in contact and rotated…
  24. The swing diameter over the bed is ________ the height of the centre measured from the bed of the lathe.
  25. The process of improving the cutting action of the grinding wheel is called
  26. In order to achieve a specific surface finish in single point turning, the most important factor to…
  27. The operation of producing grooves around the periphery of a cylindrical or conical workpiece is called
  28. A lathe with four steps on the cone pulley and with back-gears will have
  29. The strength of a brazed joint
  30. The cutting fluid mostly used for machining steel is