WELDER (THEORY) SEMESTER – II AITT JULY 2017 PAPER

41.The welding processes submerged arc welding and electroslag welding are similar in
that
a) Both are arc welding processes
b)- Both use shielding gases
c) Both use a granular flux, which becomes molten
d) All of these

42.In the IG position for welding pipes, the pipe must be
a) Rotated
b) Angled
¢) Horizorital
d) Vertical

43.The circle used in a welding symbol means that welding is
a) To ensure that subsequent deposits are sound
b) To be all around the joint
¢) To remove any excess flux
d) To relieve stresses in the first place

44.How is the thickness of thin metal sheets measured?
a) By micrometer b) By gauge
c) By calliper – d) All of these

45.The graphic description of any type of weld is called as
a) Tail
b) Reference line
c) Weld symbol
d) Arrow

46.A root bend test is used to test the amount of weld,
a) Ductility
b) Elongation
c) Hardness
d) Penetration

47.When testing parts with magnetic particle test, it is best to magnetize the part
a) In two directions at right angles to each other
b) With AC whenever possible
¢) With DC whenever possible
d) With an amperage of a least 100 amperes

48.Friction welding is suitable to weld
a) Rectangular jobs
b) Square jobs
¢) Circular jobs
d) Irregular jobs

49.If the number of passes to make a welded joint is increased, how will it affect distortion?
a) It will increase distortion .
b) It will decrease distortion
c) It will have no effect on distortion
d) It will have very little effect on distortion

50. One of the reasons for avoiding the use of long arc during welding is that
a) Itincreases the open circuit voltage
b) It will give lack of fusion of base metal
c) The joint will develop cracks during welding
d) It consurnes more electrodes