The enlarging of an existing circular hole with a rotating single point tool is called

A. Boring

B. Drilling

C. Reaming

D. Internal turning

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  1. The strength of a brazed joint
  2. In centreless grinders, the regulating wheel is inclined at
  3. The mechanism of material removal in EDM process is
  4. When the end of a tap is tapered for about three or four threads, it is known as a
  5. If a gas metal arc process uses a low arc voltage and the arc is continuously interrupted as the molten…
  6. The machining of titanium is difficult due to
  7. Glazing in grinding wheels can be decreased by
  8. In Oxyacetylene gas welding, temperature at the inner cone of the flame is around
  9. The hole to be drilled for tapping is _________ the outside diameter of the thread on the tap.
  10. The cutting fluid mostly used for machining alloy steels is
  11. The operation of smoothing and squaring the surface around a hole is known as
  12. In down milling, the thickness of chip is
  13. Gear burnishing is a process for
  14. The cutting tool in a milling machine is mounted on
  15. Which among the NC operations given below are continuous path operations? Arc Welding (AW), Drilling…
  16. The grinding operation is a
  17. The angle between the shear plane and __________ is called shear angle.
  18. In a CNC program block, N002 GO2 G91 X40 Z40......, GO2 and G91 refer to
  19. In oblique cutting system, the cutting edge of the tool
  20. Two plates of the same metal having equal thickness are to be butt welded with electric arc. When the…
  21. What is the type of welding defect is caused due to stresses on heating and cooling called?
  22. High speed steel drills can be operated at about _________ the speed of high carbon steel drills.
  23. Down milling is also called
  24. The actual feed in centerless grinders is given by (where d = Dia. of regulating wheel, n = Revolutions…
  25. Glazing in grinding wheels __________ cutting capacity.
  26. In drilling softer materials, the cutting speed is _________ as compared to harder materials.
  27. A right hand tool on a lathe cuts most efficiently when it travels
  28. Which of the following statement is correct regarding grinding of high carbon steel?
  29. Trepanning is performed for
  30. In a gating system, the ratio 1: 2: 4 represents