aws cwi certification exam study materials India

Q:- What is the possible cause of too mush restraint of the parent material during welding :

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(a) Restraint is always desirable.

(b) It may lead to cracking, especially with small welds between large components.

(c) It will cause too much distortion.

(d) It will cause lamellar tearing if it is present on a corner joint.

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Q:- Which of the following standards is entitled imperfections in Metallic fusion welds With explanation :

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(a) BS EN 25817.

(b) BS EN 26520.

(c) BS EN 22553.

(d) BS EN 24165.

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Q:- Which of the following is discontinuity which might be found in sand casting :

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(a) Incomplete penetration.
(b) Undercut.
(c) Pipe.
(d) Shrinkage.

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Q:- Weld decay begins to occure

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  • Immediately after the welding
  • After post wel heat treatment
  • Faster in low carbon grades
  • Slower in low carbon grades

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