Welding MCQ Questions and Answers Quiz

31. In a gas cut plate, the cut shows grooves and has deep drag lines. This is due to

  1. tip too close to the cut surface
  2. too much travel speed
  3. less oxygen pressure
  4. smaller size cutting nozzle

32. One of the functions of electrode coating is

  1. to increase welding current
  2. to stabilize the arc
  3. to prevent rusting
  4. to control arc temperature

33. In an acetylene cylinder, the acetylene is dissolved in

  1. Water
  2. Carbon Dioxide
  3. Acetone
  4. Mercury

34. Which one of the following is a temporary joint?

  1. Welded joint
  2. Riveted joint
  3. Soldered joint
  4. Press fit joint

35. In fusion welding, penetration is the ratio of

  1. width of the weld to its depth
  2. length of the weld to its depth
  3. depth of the weld to its width
  4. depth of the weld to its length

36. Which of the following joint have high corrosion resistance?

  1. Welding joint
  2. Riveted joint
  3. Bolted joint
  4. None of the above

37. Which of the following is a design recommendation for welding?

  1. Welded assemblies should have more parts
  2. Welding should be done horizontally, with the stick or electrode holder pointing upward during welding
  3. The buildup of weld fillets should be kept to a minimum
  4. Locate welds where special finishing operations are required

38. Which of the following processes do not use flux during welding?

  1. Submerged Arc
  2. Oxyfuel
  3. Flux Cored Arc
  4. Friction

39. Which of the following is not a resistance welding?

  1. Spot welding
  2. Butt welding
  3. Pressure welding
  4. Percussion welding

40. The resistance welding process suitable for welding ferrous and non-ferrous metals upto 8mm thickness is

  1. Spot welding
  2. Projection welding
  3. Butt welding
  4. Pressure welding
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