ONLINE MCQ EE-ELECTRIC WELDING 5
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Attempt Free ONLINE MCQ EE-ELECTRIC WELDING 5 Here. Read The Important Electrical MCQ From Below.
Q41. Which of the following is not an inert gas ?
A. Argon
B. Helium
C. Carbondioxide
D. All of above
Ans. B
Q42. Helium produces which of the following?
A. Deeper penetration
B. Faster welding speedsNarrower heat affected zone in base metal
C. Narrower heat affected zone in base metal
D. All of the above
Ans. D
Q43. Plain and butt welds may be used on materials upto thickness of nearly
A. 5 mm
B. 10 nam
C. 25 mm
D. 50 mm
Ans. C
ONLINE MCQ EE-ELECTRIC WELDING 5
Q44. The porosity of welded joint may be caused by
A. low welding current
B. incorrect size of electrode
C. poor base metai
D. any of the above
Ans. C
Q45. In welding weld spatter defect is generally the result of
A. too high voltage during welding
B. too high current during welding
C. low voltage during welding
D. low current during welding
Ans. B
ONLINE MCQ EE-ELECTRIC WELDING 5
Q46. For the welding of aluminium alloys which of the following methods would you recommend ?
A. Acetylene-oxygen gas welding
B. D.C. arc welding
C. A.C. arc welding
D. Tungsten arc welding
Ans. D
Q47. Grey iron is usually welded by ____ welding
A. gas
B. arc
C. resistance
D. MIG
Ans. A
Q48. Electronic components are joined by which of the follo,wing methods ?
A. Brazing
B. Soldering
C. Seam welding
D. Spot welding
E. None of the above
Ans. B
Q49. Due to which of the following reasons aluminium is difficult to weld ?
A. It has an oxide coating
B. It conducts away heat very rapidly
C. Both (a) and (b)
D. None of the above
Ans. C
ONLINE MCQ EE-ELECTRIC WELDING 5
Q50. In argon arc welding argon is used as a
A. flux
B. source of heat
C. agent for heat transfer
D. shield to protect the work from oxidation
Ans. D
