High speed steel cutting tools operate at cutting speeds _________ than carbon steel tools.

A. 2 to 3 times lower

B. 2 to 3 times higher

C. 5 to 8 times higher

D. 8 to 20 times higher

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  1. The vector sum of cutting velocity and chip velocity is __________ shear velocity.
  2. Segmental chips are formed during machining
  3. 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…
  4. The hard grade grinding wheels are denoted by the letters
  5. The operation of machining several surfaces of a workpiece simultaneously is called
  6. Which of the following parameters govern the value of shear angle in continuous chip formation?
  7. Grinding wheels should be tested for balance
  8. In ultrasonic machining, tool is made of
  9. Which of the following statement is correct about hot machining?
  10. What is the name of the device used in arc welding circuits for the purpose of modifying the rate of…
  11. In electro-discharge machining, dielectric is used to
  12. A right hand tool on a lathe cuts most efficiently when it travels
  13. In _________ operation, the chip thickness is minimum at the beginning of the cut and it reaches to…
  14. Internal or external threads of different pitches can be produced by
  15. The saw milling is an operation of
  16. Low helix angle drills are preferred for drilling holes in
  17. The advantage of a broaching operation is that
  18. The tool life is affected by
  19. A drill mainly used in drilling brass, copper or softer materials, is
  20. The tailstock set over required to turn a taper on the entire length of a workpiece having diameters…
  21. Slow speed of the spindle is necessary in
  22. The specific cutting energy used for establishing the machinability of the metal depends upon its
  23. In orthogonal turning of a low carbon steel bar of diameter 150 mm with uncoated carbide tool, the cutting…
  24. Which of the following statement is correct as regard to up milling?
  25. The tap used to cut threads in a blind hole is
  26. In a planer
  27. The crystal structure of austenite is
  28. In drilling Bakelite and fibrous plastics, the point angle of a drill is
  29. In electrochemical machining, the gap between the tool and work is kept as
  30. A grinding wheel is said to be of _________ if the abrasive grains can be easily dislodged.