The purpose of jigs and fixtures is to

A. Increase machining accuracy

B. Facilitate interchangeability

C. Decrease expenditure on quality control

D. All of these

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  1. 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…
  2. The cutting fluid mostly used for machining steel is
  3. Which of the following statement is wrong?
  4. Any number of equal divisions can be obtained on milling machine by
  5. Which of the following statement is correct for oblique cutting system?
  6. The factor responsible for the formation of continuous chips with built up edge is
  7. Carbide tipped tools usually have
  8. A feed gear box for a screw cutting lathe is designed on the basis of
  9. Two 1 mm thick steel sheets are to be spot welded at a current of 5000 A. Assuming effective resistance…
  10. The common welding error that occurs due to wrong speed, faulty preparation, and high / low current,…
  11. In machining metal, cutting force at the cutting edge is measured by a
  12. In lapping operation, the amount of metal removed is
  13. The saw milling is an operation of
  14. In drilling brass, a drill with
  15. When the shear angle is large
  16. A taper tap has
  17. Cold working of steel is defined as working
  18. The relation between tool life (T) and cutting speed (V) is VTn = Constant. In this relation, the value…
  19. In ultrasonic machining, tool is made of
  20. The increase in depth of cut and feed rate __________ surface finish.
  21. Low helix angle drills are preferred for drilling holes in
  22. In which of the following machine, the work rotates and the tool is stationary?
  23. What is the type of welding defect caused due to poor deposition of weld rod is called?
  24. The surface finish is improved by the increase in
  25. The vector sum of cutting velocity and chip velocity is __________ shear velocity.
  26. What type of fusion welding process is used for welding sheet metals of all engineering metals (except…
  27. During normalizing process of steel, the specimen is heated
  28. The lip clearance angle is the angle formed by the
  29. The soft grade grinding wheels are denoted by the letters
  30. The process of changing the shape of grinding wheel as it becomes worn due to breaking away of the abrasive…