The operation of smoothing and squaring the surface around a hole is known as

A. Counter-sinking

B. Counter-boring

C. Trepanning

D. Spot facing

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  1. During the execution of a CNC part program block NO20 GO2 X45.0 Y25.0 R5.0 ; the type of tool motion…
  2. The cutting speed is minimum while machining _________ with a high speed steel tool.
  3. In up milling, the thickness of chip is
  4. In a CNC program block, N002 GO2 G91 X40 Z40......, GO2 and G91 refer to
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  10. A mandrel is used to hold
  11. Which of the following statement is correct regarding grinding of high carbon steel?
  12. If a gas metal arc process uses a low arc voltage and the arc is continuously interrupted as the molten…
  13. Hard and tough materials like cast iron should be turned at
  14. Crater wear is mainly due to the phenomenon known as
  15. Hardness of green sand mould increases with
  16. In _________ operation, the cutting force is maximum when the tooth begins its cut and reduces it to…
  17. Which of the following statement is wrong?
  18. A type of welding flows, which is the result of a perfect proportion and mixture of acetylene and oxygen…
  19. The lead screw of a lathe has _________ threads.
  20. The chuck used for setting up of heavy and irregular shaped work should be
  21. A drill considered as a cutting tool having zero rake, is known as a
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  25. In lapping operation, the amount of metal removed is
  26. Chip breakers are used to
  27. The negative rake is usually provided on
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