ONLINE MCQ EE-ELECTRIC WELDING 3

Q21. For arc welding, D.C. is produced by which of the following ?
 A.  Motor-generator set
 [Correct Answer]
 B.  Regulator
 [Wrong Answer]
 C.  Transformer
 [Wrong Answer]
 D.  None of the above
 [Wrong Answer]
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Q22. In seam welding
 A.  the work piece is fixed and disc electrodes move
 [Wrong Answer]
 B.  the work piece moves but rotating electrodes are fixed
 [Wrong Answer]
 C.  any of the above
 [Correct Answer]
 D.  none of the above
 [Wrong Answer]
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Q23. Galvanising is a process of applying a layer of
 A.  aluminium
 [Wrong Answer]
 B.  lead
 [Wrong Answer]
 C.  copper
 [Wrong Answer]
 D.  zinc
 [Correct Answer]
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Q24. During carbon arc welding if electrode is connected to positive
 A.  arc will be dull
 [Wrong Answer]
 B.  arc will not strike
 [Wrong Answer]
 C.  metal will not melt
 [Wrong Answer]
 D.  carbon will have tendency to go into the weld joint
 [Correct Answer]
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Q25. Which of the foK-wing methods is nor­mally not preferred for welding of chromium molyblenum steels ?
 A.  Oxyacetylene welding
 [Wrong Answer]
 B.  Resistance welding
 [Correct Answer]
 C.  Thermit welding
 [Wrong Answer]
 D.  Submerged arc welding
 [Wrong Answer]
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Q26. The welding load is always
 A.  continuous but varying
 [Wrong Answer]
 B.  continuous and constant
 [Wrong Answer]
 C.  intermittent
 [Correct Answer]
 D.  none of the above
 [Wrong Answer]
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Q27. Steel rails are welded by
 A.  Gas welding
 [Wrong Answer]
 B.  Thermit welding
 [Correct Answer]
 C.  Resistance welding
 [Wrong Answer]
 D.  Argon arc welding
 [Wrong Answer]
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Q28. ____ welding process uses consumable electrodes.
 A.  TIG
 [Wrong Answer]
 B.  MIG
 [Correct Answer]
 C.  Laser
 [Wrong Answer]
 D.  All of the above
 [Wrong Answer]
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Q29. In arc welding major personal hazards are
 A.  flying sparks
 [Wrong Answer]
 B.  weld spatter
 [Wrong Answer]
 C.  harmful infrared and ultra-violet rays from the arc
 [Wrong Answer]
 D.  all of the above
 [Correct Answer]
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Q30. A seamless pipe has
 A.  steam welded joint
 [Wrong Answer]
 B.  spot welded joint
 [Wrong Answer]
 C.  arc welded joint
 [Wrong Answer]
 D.  no joint
 [Correct Answer]
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ONLINE MCQ EE-ELECTRIC WELDING 4
CURRENT AFFAIRS QUIZ OF DAY-14 March 2017

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