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The common welding error that occurs due to wrong speed, faulty preparation, and high / low current, improper electrode size is called?

A. Distortion

B. Warping

C. Porous weld

D. Poor fusion

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  1. In order to have interference fit, it is essential that the lower limit of the shaft should be
  2. The tool life is affected by
  3. Which of the following operations can be performed with milling cutters?
  4. Glazing in grinding wheels can be decreased by
  5. In drilling aluminium, a drill with
  6. A solid cylinder of diameter 100 mm and height 50 mm is forged between two frictionless flat dies to…
  7. If the diameter of the hole is subject to considerable variation, then for locating in jigs and fixtures,…
  8. What is the welding defect caused due to improper control and poor removal of slog between passes called?
  9. In Oxyacetylene gas welding, temperature at the inner cone of the flame is around
  10. Work speed of circular electrode of 220 mm diameter for carrying out seam welding at 4 welds per cm…
  11. In an orthogonal cutting, the depth of cut is halved and the feed rate is double. If the chip thickness…
  12. Quality screw threads are produced by
  13. The in-feed grinding is used to
  14. A jig is defined as a device which
  15. While cutting helical gears on a non-differential gear hobber, the feed change gear ratio is
  16. Lapping is an operation of
  17. The type of reamer used for reaming soft aluminium or copper, is
  18. The operation of smoothing and squaring the surface around a hole is known as
  19. In which of the following machine, the work remains stationary and the tool is rotated?
  20. As tool and work are not in contact in EDM process
  21. The cutting fluid mostly used for machining steel is
  22. The silicon carbide abrasive is chiefly used for grinding
  23. Which of the following is the correct data structure for solid models?
  24. Grinding wheels should be tested for balance
  25. The work or surface speed for cylindrical grinding varies from
  26. Crater wear leads to
  27. High speed steel cutting tools operate at cutting speeds _________ than carbon steel tools.
  28. In an interchangeable assembly, shafts of size 25.000 -0.0100⁺⁰⁰⁴⁰…
  29. The cutting speed for drilling __________ with high speed steel drills is 24 to 45 m/min.
  30. Crack in grinding wheel is developed due to