Prepare for the CWI Exam

Q:-What is meant by the term duty cycle?

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A. How long a welder can weld for in a given period
B. The amount of time the electrodes are being used
C. The amount of time a welding machine can be weld
D. The amount of electricity being consumed

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Q:- The most serious defect types are:

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1. Planar
2. Cracks
3. Lack of fusion
4. All of the above

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Q:-When considering the advantages of site RT over UT which of the following applies?

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1. A permanent record produced, good for detecting defects which do not have significant depth in relation to axis of the X-ray beam and defect identification
2. A permanent record produced, good for detecting all surface and sub-surface defects and assessing the through thickness depths of defects
3. A permanent record produced, defect identification not so reliant on operator skill
4. No controlled areas required on site, a permanent record produced and good for assessing the extent of pipe wall thickness reductions due to internal corrosio

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Q:- A magnifying glass may be used during visual inspection but BS 5289 states that its magnification should be:

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A. Up to 5
B. 2 – 2.5
C. 5 – 10
D. None of the Above

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