WELDER (THEORY) SEMESTER – I AITT JULY 2017 PAPER

40. Which of the following is an example of plastic welding?
(a) Gas welding
(b) Arc welding
(c) Forge welding
(d) Thermit welding

41. Is it OK to wear nylon clothing while doing welding?
(a) No, because you will sweat too much
(b) No, because static electricity can build and cause shock
(c) No, because it can easily catch fire
(d) It is fine to wear nylon clothing

 

42. If you find a tool to be faulty and dangerous what should you do?
(a) Put it back in the store
(b) Try using it one more time
(c) Take it out of service and report about it
(d) Do nothing

 

43, What treatment is recommended after welding stainless steel?
(a) No treatment is required
(b) Quench in water to remove oxides
(c) Apply pickling paste
(d) Oil it to stop rust

 

44. What type of weld would you do to form a T shape between two pieces of flat bar?
(a) Butt
(b) Fillet
(c) Edge
(d) Outside corner

 

45. Oxygen and acetylene cylinders must ……………..
(a) Have the cap on when not in use
(b) Be secured in upright position both during storage and use
(c) Be protected from being bumped when the regulator is on
(d) All of the above

 

46. If the blowpipe is moved to and fro frequently while gas cutting, the kerf will …………..
(a) Be wide
(b) Be of correct size
(c) Be narrow
(d) Not affect

 

47. A device intended to keep the parts to be welded in alignment is called ……………
(a) Welding jig
(b) Welding fixture
(¢) Welding positioner
(d) Welding manipulator

 

48. For oxy-acetylene welding of aluminium, the flame used is ……..cc.o…
(a) Neutral flame
(b) Oxidizing flame
(c) Neutral flame with a little haze of excess oxygen
(d) Neutral flame with a little haze of excess acetylene

 

49. Non-ferrous metals do not contain
(a) Tin
(b) Lead
(c) zink
(d) iron

 

50. If a substance breaks easily, it is said to be w…..ovurverrnenees
(a) Magnetic
(b) Conductive
(c) Brittle
(d) Ductile

 

THANK YOU….!