Which of the following statement is correct about EDM machining?

A. It can machine hardest materials.

B. It produces high degree of surface finish.

C. The tool and work are never in contact with each other.

D. All of these

Please do not use chat terms. Example: avoid using "grt" instead of "great".

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  1. The usual value of the helix angle of a drill is
  2. In up milling, the thickness of chip is
  3. Internal or external threads of different pitches can be produced by
  4. Crater wear leads to
  5. What is the type of welding defect caused due to poor manipulation of weld rod or a dirty joint called?
  6. In order to obtain a surface finish in the range of 0.75 μm to 1.25 μm , the operation used…
  7. The angle formed by the leading edge of the land with a plane having the axis of the drill, is called
  8. In which of the following machine, the work rotates and the tool is stationary?
  9. A ring gauge is used to measure
  10. A shaft has a dimension, φ9 +0.025⁺⁰⁰⁰⁹, the respective values…
  11. Drilling is an example of
  12. The type of tool used on lathe, shaper and planer is
  13. Which of the following process is used for preparing parts having large curved surfaces and thin sections?
  14. Which of the following operations is carried out at a minimum cutting velocity if the machines are equally…
  15. Gear burnishing is a process for
  16. Which of the following statement is wrong about ultrasonic machining?
  17. An operation of embossing a diamond shaped pattern on the surface of a workpiece, is known as
  18. Quality screw threads are produced by
  19. In American Standard Association (A S A) system, if the tool nomenclature is 8-6-5-5-10-15-2 mm, then…
  20. The material property which depends only on the basic crystal structure is
  21. In drilling softer materials, the cutting speed is _________ as compared to harder materials.
  22. A push broach as compared to pull broach
  23. If the diameter of the hole is subject to considerable variation, then for locating in jigs and fixtures,…
  24. The relation between tool life (T) and cutting speed (V) is VTn = Constant. In this relation, the value…
  25. A drill mainly used in drilling brass, copper or softer materials, is
  26. High speed steel cutting tools operate at cutting speeds _________ than carbon steel tools.
  27. Climb milling is chosen while machining because
  28. The effective number of lattice points in the unit cell of simple cubic, body centred cubic, and face…
  29. In gear hobbing
  30. In _________ operation, the chip thickness is minimum at the beginning of the cut and it reaches to…