PAPER -1 WELDER (THEORY) SEMESTER – I july (SESSION 2017 -2018) – NSQF LEVEL -4

31. Which remedial measure to eliminate the undercut defect in arc welding?
a) Increase the welding speed
b) Proper welding speed
c) Increase the welding current
d) Pre heat the plates to be welded

32. Which factor causes the defect of porosity in welding?
a) Damp electrode
b) Light coated electrode
c) Over sized electrode
d) Small diameter electrode

33. Name the defect marked ‘X’ in welding

a) Blow hole
b) Porosity
c) Crater crack
d) Under cut

34. What is the advantage of extrusion method of flux coating?
a) Prevent distortion
b) Deoxidising agent
c) Uniform melting of electrode
d) Prevent slag formation

35. Identify the part marked ‘X in cutting torch.

a) Oxygen lever
b) Oxygen pipe
c) Oxygen valve
d) Mixing chamber

36. Name the defect marked ‘x’ in welding.

a) Reinforcement
b)Leg length
c) Toe of weld
d) Overlap

37. Name the welding defect.

a) Crack
b) Porosity
c) Blow hole
d) Burn through

38. Name the weld joint.

a) Strap joint
b) Corner joint
c) Edge joint
d) Groove joint

39. Name the tool used to clean the nozzle orifice of the blow pipe.
a) Needle file
b) Tip cleaner
c) Weld gauge
d) Feeler gauge

40. Name the device.

a) Constant regulator
b) Single stage regulator
c) Double stage regulator
d) Variable stage regulator