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Lathe bed is made of

A. Mild steel

B. Alloy steel

C. Pig iron

D. Chilled cast iron

Correct Answer : D.


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  1. The parameter which completely defines the chip formation in a metal cutting process is
  2. The angle on which the strength of the tool depends is
  3. A shaft has a dimension, φ9 +0.025⁺⁰⁰⁰⁹, the respective values…
  4. Glazing in grinding wheels __________ cutting capacity.
  5. In which of the following machine, the work remains stationary and the tool is rotated?
  6. For machining a mild steel workpiece using carbide tool, the maximum material will be removed at a temperature…
  7. When the temperature of a solid metal increases,
  8. In centreless grinders, the regulating wheel is inclined at
  9. The grade of grinding wheel depends upon
  10. In metal machining, the zone where the heat is generated due to friction between the moving chip and…
  11. The rear teeth of a broach
  12. The primary purpose of a sprue in a casting mould is to
  13. In drilling operation, the metal is removed by
  14. Which of the following statement is wrong?
  15. Lapping is an operation of
  16. The common welding error that occurs due to shrinkage of weld metal, faulty clamping of parts, faulty…
  17. In _________ operation, the cutting force is maximum when the tooth begins its cut and reduces it to…
  18. In hot machining, tool is made of
  19. In down milling, the thickness of chip is
  20. The effective number of lattice points in the unit cell of simple cubic, body centred cubic, and face…
  21. A left hand tool on a lathe cuts most efficiently when it travels
  22. Two streams of liquid metal which are not hot enough to fuse properly result into a casting defect known…
  23. Which of the following is the correct data structure for solid models?
  24. Which of the following statement is wrong about ultrasonic machining?
  25. Which of the following parameters influence the axial feed rate in centerless grinding?
  26. A grinding wheel becomes glazed (i.e. cutting edge takes a glasslike appearance) due to
  27. Gear finishing operation is called
  28. The correct sequence of tool materials in increasing order of their ability to retain their hot hardness…
  29. Which of the following statement is correct about EDM machining?
  30. The thrust force will increase with the increase in