The crystal structure of austenite is

A. Body centred cubic

B. Base centred cubic

C. Hexagonal closed packed

D. Body centred tetragonal

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  1. Side rake angle of a single point cutting tool is the angle
  2. A mandrel is used to hold
  3. In centre less grinders, the maximum angular adjustment of the regulating wheel is
  4. Relief angles on high speed steel tools usually vary from
  5. Glazing in grinding wheels __________ cutting capacity.
  6. The usual value of the helix angle of a drill is
  7. A 15 mm drilling machine means that it can drill a hole
  8. What is the type of welding defect caused due to poor manipulation of weld rod or a dirty joint called?
  9. In order to grind soft material
  10. Two 1 mm thick steel sheets are to be spot welded at a current of 5000 A. Assuming effective resistance…
  11. In _________ operation, the cutting force is maximum when the tooth begins its cut and reduces it to…
  12. The chuck used for setting up of heavy and irregular shaped work should be
  13. What is the type of welding defect caused due to poor deposition of weld rod is called?
  14. The rake angle required to machine brass by high speed steel tool is
  15. Which of the following statement is correct about hot machining?
  16. Flank wear depends upon the
  17. In the relation VTn = C, the value of n for ceramic tools is
  18. The abrasive slurry used in ultrasonic machining contains fine particles of
  19. Stellite preserves hardness upto a temperature of
  20. What is the type of welding defect caused due to shrinkage during solidification and by weld stresses…
  21. Hard and tough materials like cast iron should be turned at
  22. The cutting angle of a flat drill varies from
  23. The ratio between two consecutive spindle speeds for a six-speed drilling machine using drills of diameter…
  24. Tool signature consists of __________ elements.
  25. Gears can be best produced on mass production by
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  27. Slow speed of the spindle is necessary in
  28. Crater wear leads to
  29. What is the name of the device used in arc welding circuits for the purpose of modifying the rate of…
  30. Allowance in limits and fits refers to