While current is shut down in the welding circuit, what kind of voltage exists between the output terminals of the welding machine?


B. Open air cut voltage

C. Kerf

D. Gouging

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  1. The specific cutting energy used for establishing the machinability of the metal depends upon its
  2. A tool used to withdraw a drill from the sleeve is called
  3. What is the welding defect caused due to improper control and poor removal of slog between passes called?
  4. A better machinable metal is one which gives
  5. The lip angle is the angle
  6. High speed steel cutting tools operate at cutting speeds _________ than carbon steel tools.
  7. The material property which depends only on the basic crystal structure is
  8. The aluminium oxide abrasive is chiefly used for grinding
  9. Which of the following process is used for preparing parts having large curved surfaces and thin sections?
  10. A feed gear box for a screw cutting lathe is designed on the basis of
  11. Tumbler gears in lathe are used to
  12. If a gas metal arc process uses a low arc voltage and the arc is continuously interrupted as the molten…
  13. In a plain milling cutter, the chip space between the back of one tooth and the face of the next tooth…
  14. The grinding wheel speed (surface speed in m/min) usually varies from
  15. In metal cutting, use of low feeds and high cutting speeds is desired when the objective is
  16. In order to obtain a surface finish in the range of 0.75 μm to 1.25 μm , the operation used…
  17. The operation of producing grooves around the periphery of a cylindrical or conical workpiece is called
  18. Which of the following statement is correct about EDM machining?
  19. Trepanning is an operation of
  20. The angle between the face and flank of the single point cutting tool is known as
  21. A taper tap has
  22. The cutting speed for drilling aluminium, brass and bronze with carbon steel drills is _________ cutting…
  23. If the diameter of the hole is subject to considerable variation, then for locating in jigs and fixtures,…
  24. When 3-2-1 principle is used to support and locate a three dimensional work-piece during machining,…
  25. Crater wear leads to
  26. The purpose of jigs and fixtures is to
  27. In oblique cutting system, the cutting edge of the tool
  28. In centre less grinders, the maximum angular adjustment of the regulating wheel is
  29. The process of changing the shape of grinding wheel as it becomes worn due to breaking away of the abrasive…
  30. In metal machining, the zone where the heat is generated due to friction between the moving chip and…