ONLINE MCQ EE-ELECTRIC WELDING 2

Q11. ____ welding is not a resistance welding process.
 A.  Projection
 [Wrong Answer]
 B.  Seam
 [Wrong Answer]
 C.  Flush
 [Wrong Answer]
 D.  Carbon arc
 [Correct Answer]
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Q12. Which of the following is net a welding accessory ?
 A.  Hand screen
 [Wrong Answer]
 B.  Cable
 [Correct Answer]
 C.  Electrode holder
 [Wrong Answer]
 D.  Gloves
 [Wrong Answer]
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Q13. The danger of shock is maximum
 A.  before welding
 [Wrong Answer]
 B.  after arcing
 [Wrong Answer]
 C.  during arcing
 [Wrong Answer]
 D.  while inserting electrode into the holder
 [Correct Answer]
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Q14. In a welded joint poor fusion is due to which of the following ?
 A.  Improper current
 [Correct Answer]
 B.  High welding speed
 [Wrong Answer]
 C.  Uncleaned metal surface
 [Wrong Answer]
 D.  Lack of flux
 [Wrong Answer]
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Q15. Arc blow results in which of the follow­ing?
 A.  Non-uniform weld beads
 [Wrong Answer]
 B.  Shallow weld puddle giving rise to weak weld
 [Wrong Answer]
 C.  Splashing out of metal from weld puddle
 [Wrong Answer]
 D.  All of the above defects
 [Correct Answer]
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Q16. Spot welding is used for
 A.  thin metal sheets
 [Correct Answer]
 B.  rough and irregular surfaces
 [Wrong Answer]
 C.  costings only
 [Wrong Answer]
 D.  thick sections
 [Wrong Answer]
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Q17. percent duty cycle of a welding machine means
 A.  machine input is 50 percent of rated input
 [Wrong Answer]
 B.  machine efficiency is 50 percent
 [Wrong Answer]
 C.  machine works on 50 percent out­put
 [Wrong Answer]
 D.  machine works for 5 minutes in a duration of 10 minutes
 [Correct Answer]
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Q18. The power factor of a spot welding machine is expected to be around
 A.  Unity
 [Wrong Answer]
 B.  0.8 lagging
 [Wrong Answer]
 C.  0.3 to 0.5 lagging
 [Correct Answer]
 D.  0.8 leading
 [Wrong Answer]
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Q19. Grey iron is usually welded by
 A.  Gas welding
 [Correct Answer]
 B.  TIG welding
 [Wrong Answer]
 C.  MIG welding
 [Wrong Answer]
 D.  Arc welding
 [Wrong Answer]
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Q20. The welding electric circuit is
 A.  never earthed
 [Wrong Answer]
 B.  always earthed
 [Correct Answer]
 C.  through cables only
 [Wrong Answer]
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कंप्यूटर(COMPUTER)-अक्सर पूछे जाने वाले प्रश्न 3
ONLINE MCQ EE-ELECTRIC WELDING 1

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