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Jigs are used

A. For holding and guiding the tool in drilling, reaming or tapping operations

B. For holding the work in milling, grinding, planing or turning operations

C. To check the accuracy of workpiece

D. None of the above

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  1. The average cutting speed for turning mild steel with a high speed steel tool is
  2. Gear burnishing is a process for
  3. In a shaper
  4. A type of welding flows, which is the result of a perfect proportion and mixture of acetylene and oxygen…
  5. The effective number of lattice points in the unit cell of simple cubic, body centred cubic, and face…
  6. Hardness of green sand mould increases with
  7. A hole is of dimension φ = 9 ₊0⁺⁰⁰¹⁵ mm. The corresponding…
  8. In orthogonal turning of a low carbon steel bar of diameter 150 mm with uncoated carbide tool, the cutting…
  9. What is the welding defect caused due to improper control and poor removal of slog between passes called?
  10. The cutting speed for drilling __________ with high speed steel drills is 24 to 45 m/min.
  11. Gear finishing operation is called
  12. Glazing in grinding wheels __________ cutting capacity.
  13. Which of the following parameters govern the value of shear angle in continuous chip formation?
  14. A mandrel is used to hold
  15. The tool material, for faster machining, should have
  16. Which of the following statement is incorrect with reference of lathe cutting tools?
  17. The angle between the shear plane and __________ is called shear angle.
  18. The operation of making a cone-shaped enlargement of the end of a hole is known as
  19. The relief or clearance at the cutting edge of a flat drill varies from
  20. A bottoming tap has
  21. The velocity of tool along the tool face is known as
  22. During normalizing process of steel, the specimen is heated
  23. An expendable pattern is used in
  24. The cutting speed is minimum while machining _________ with a high speed steel tool.
  25. A __________ grinding wheel is used to grind soft materials.
  26. Broaching is applied for machining
  27. The process of changing the shape of grinding wheel as it becomes worn due to breaking away of the abrasive…
  28. In which of the following machine, the work is usually rotated while the drill is fed into work?
  29. For turning small taper on long workpiece, the suitable method is
  30. The trade name of a nonferrous cast alloy composed of cobalt, chromium and tungsten is called