CWI & CWE exam

Q:-During welder qualification, when destructively testing pipe with a diameter less than or equal to 33.4 mm:

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1. Radiography must be used

2. The entire pipe must be used for bend testing

3. One full-section tensile specimen may be substituted for the root-bend and nick-break 

specimens. 

4. Pipe of this diameter may not be destructively tested e. none of the above 

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Q:- Atmospheres for shielding an arc may consist of:

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1. Inert gases, active gases, or mixtures of inert and active gases
2. Only inert gases are permitted
3. Only active gases are permitted
4. No gases are permitted for welding
5. none of the above

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Q:- What type of alloying element need to be added in steel for ‘easy machining’:

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  • Mangganese
  • Chromium
  • Sulphur
  • Silicon

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Q:- In cross joint tensile test following observation were made, specimen width-20mm, material thickness; 20 mm max load; 180kN, breaker position; parent plate What is the UTS?

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(A). 45KN/mm^2
(B). 450N/mm^2
(C). 39KN/mm^2
(D). 39N/mm^2
Please explain how

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