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In electro discharge machining, tool is made of

A. Brass

B. Copper

C. Copper tungsten alloy

D. All of these

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  1. The operation of machining several surfaces of a workpiece simultaneously is called
  2. In a single point tool, the angle between the surface of the flank immediately below the point and a…
  3. The stroke of a shaping machine is 250 mm. It makes 30 double strokes per minute. The overall average…
  4. In electro discharge machining, tool is made of
  5. EDM machining is applied for
  6. Larger end cutting edge angle _________ tool life.
  7. Crater wear is predominant in
  8. It is desired to perform the operations like drilling, reaming, counter-boring etc. on a work piece.…
  9. In a shaper
  10. In which of the following milling machine, the table can be tilted in a vertical plane by providing…
  11. In down milling, the thickness of chip is
  12. A ring gauge is used to measure
  13. A taper tap has
  14. What is the name of the device used in arc welding circuits for the purpose of modifying the rate of…
  15. Which of the following statement is correct about hot machining?
  16. Flank wear depends upon the
  17. Which type of motor is not used in axis or spindle drives of CNC machine tools?
  18. Calculate the weld per minute, work speed of circular electrode of 220 mm diameter for carrying out…
  19. In plunge grinding
  20. The cutting speed for drilling __________ with high speed steel drills is 24 to 45 m/min.
  21. The capacity of a material to be welded under the imposed fabrication conditions into a specific, suitably…
  22. Soft materials can not be economically ground due to
  23. The abrasive recommended for grinding materials of high tensile strength is
  24. In Oxyacetylene gas welding, temperature at the inner cone of the flame is around
  25. The velocity of tool along the tool face is known as
  26. The operation of producing grooves around the periphery of a cylindrical or conical workpiece is called
  27. In transverse grinding
  28. Glazing in grinding wheels __________ cutting capacity.
  29. Allowance in limits and fits refers to
  30. The facing is an operation of