WELDER (THEORY) SEMESTER – II AITT JULY 2017 PAPER

21.What does the term ‘ripple’ refers to as regards welded joint?
a) Shape of weld bead
b) Depression in base metal
c) Depth of fusion in metal
d) Distance from electrode to metal

22.Heating of a joint immediately after welding is called.
a) Preheating
b) Post-heating
c) Late heating
d) Delayed heating

23.The original metal being joined by welding’is called
a) Raw metal 5
b) Bead metal
c) Base metal
d) Finished metal

24.What are some short term symptoms of ‘Arc Eye’ or ‘Welder’s Flash?
a) Dry eyeballs .
b) Extreme eye pain, headache, nausea
c) Infection, conjunctivitis, excessive winking
d) Blindness

25.A solid state welding process using a non-consumable, cylindrical tool is called
a) Resistance welding
b) Friction stir welding
c) Carbon arc welding
d) Electroslag welding

26.Cracking in weld metal can occur.
a) During welding
b) After the weld metal has cooled to room temperature &
c) During the weld heat treatment
d) All of these

27.The need for pre and post heating carbon steels may be indicatéed by.
a) Ferrite number
b) Carbon equivalent
¢) Matensite content
d) Austenite content

28.The test method used to test strength of spot welded joints is
a) Shear test
b) Tensile test
c) Bend test
d) Radiography

29.In the welding process, removal of weld metal and base metal from the opposite side of a
welded joint to ensure complete penetration upon welding from that side is called.
a) De-welding
b) Bevelling
c) Back gouging
d) Joint preparation

30.In a welded joint, the minimum distance from the root to the weld face is
a) Hypotenuse
b) Leg
c) Effective throat .
d) Length of weld