The angle between the lathe centres is

A. 30°

B. 45°

C. 60°

D. 90°

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  1. The lathe centres are provided with standard taper known as
  2. In which of the following machine, the work rotates and the tool is stationary?
  3. A 15 mm drilling machine means that it can drill a hole
  4. A broach has
  5. The obtuse angle, included between the chisel edge and the lip as viewed from the end of a drill, is…
  6. The shear velocity is the velocity of
  7. In plunge grinding
  8. The average cutting speed for turning mild steel with a high speed steel tool is
  9. The chuck used for setting up of heavy and irregular shaped work should be
  10. In _________ operation, the chip thickness is minimum at the beginning of the cut and it reaches to…
  11. In American Standard Association (A S A) system, if the tool nomenclature is 8-6-5-5-10-15-2 mm, then…
  12. In which of the following milling machine, the table can be tilted in a vertical plane by providing…
  13. In order to obtain a surface finish in the range of 0.75 μm to 1.25 μm , the operation used…
  14. A jig is defined as a device which
  15. The actual feed in centerless grinders is given by (where d = Dia. of regulating wheel, n = Revolutions…
  16. In orthogonal turning of a low carbon steel bar of diameter 150 mm with uncoated carbide tool, the cutting…
  17. The type of reamer used for reaming soft aluminium or copper, is
  18. Quality screw threads are produced by
  19. The object of caulking in a riveted joint is to make the joint
  20. A taper tap has
  21. In up-cut milling the work piece is fed
  22. The cutting fluid mostly used for machining alloy steels is
  23. Shrinkage allowance on pattern is provided to compensate for shrinkage when
  24. While current is shut down in the welding circuit, what kind of voltage exists between the output terminals…
  25. The lead screw of a lathe has _________ threads.
  26. The cutting speed is maximum while machining __________ with a high speed steel tool.
  27. The example of snag grinding is
  28. A drill bit of 20 mm diameter rotating at 500 r.p.m. with a feed rate of 0.2 mm/revolution is used to…
  29. The tool material, for faster machining, should have
  30. The primary purpose of a sprue in a casting mould is to