cwi exam questions and answers

Q:- Which of the following may increase the risk of haz cracking when welding thick section carbon manganese steel?

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1. Slow cooling after welding
2. Low moisture content in the electrode covering
3. Use of a steel grade with a low cev
4. Use of a low heat input

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Q:-What test specimens are required for this qualification test?

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A. 2 reduced section tensiles, 2root bends, 2 face bends
B. 2 reduced section tensiles, 4 side bends
C. 2 reduced section tensiles, 2root bends, 2 face bends, 2 macro etch specimens
D. 2 reduced section tensiles, 2root bends, 2 face bends, 4 side bends
E. None of the above

Q:- A brittle failure normally has the appearance of fracture surface with :

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  1. Rough and dull grey appearance
  2. Smooth fracture with beach mark
  3. A cup and cone shape
  4. None of the above is correc

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