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

41. Name the gas welding technique.

a) Vertical welding technique
b) Forward welding technique
c) Lefiward welding technique
d) Rightward welding technique

42. What is the groove angle marked X’ in welding joint?

a) 60°
b) 70°
c) 80°
d) 90°

43. Which factor causes the gas cutting fault?

a) Tip too close
b) Too slow cutting speed
c) Too high cutting speed
d) Correct cutting speed

44. Name the safety apparel –

a) Hand screen
b) Grinding shield
c) Welding helmet
d) Chipping shield

45. Name the polarity in welding set up –

a) DCSP
b) DCNP
c) DCEN
d) DCEP

46. Name the plates marked ‘x’-

a) Tack plates
b) Run on plates
c) Run off plates
d) RUN ON and RUN OFF plates

47. What is the purpose of normalizing?
a) Induce toughness
b) Soften the metal
c) Control distortion
d) Stress relieving

48. What is the purpose of tempering the steel in heat treatment?
a) Induce hardness
c) Regulate softness
b) Induce brittleness
d) Regulate hardness and toughtiess

49. What is the purpose of alloying elements that added in the metal?
a) Increase physical properties
b) Increase the mechanical properties
c) Decrease physical properties
d) Decrease the mechanical properties

50. Which type of flux coated electrode suitable for general purpose fabrication work?
a) Rutile electrode
b) Cellulosic electrode
c) Iron powder electrode
d) Basic coated electrode