CWB 2 Module 7 Questions fully solved graded A+ 2023/2024

CWB 2 Module 7 Questions True or False? Weld metal shrinkage is not proportional to the amount of weld metal. - correct answer False True or False? Longitudinal residual stress may be as high as the yield stress of the base metal. - correct answer True True or False? There is no residual stress in a steel plate with mill rolled edges without any additional head treatment - correct answer False True or False? Oxy-fuel gas cutting along rectangular steel plates always causes distortion. - correct answer False What is the following formula applicable to? S = 0.18 Aw / t + 0.05d - correct answer Transverse shrinkage - butt welds What is the following formula applicable to? S = 0.025 Aw / Ar - correct answer Longitudinal shrinkage - butt welds In seam welding, what is the simplest form of distortion control? - correct answer Start at the same distance from the end of the joint, making a short weld first True or False? Where planting and stiffeners are combined as a ship bulkhead work, the butt and seam welds in plating should be welded before the stiffeners. - correct answer True True or False? In filling up a weld joint, the number of weld passes does not affect distortion. - correct answer False True or False? Arc travel speed does not affect the amount of distortion. - correct answer False True or False? The heat distribution around the welding arc is the same regardless of its travel speed. - correct answer False Distortion may be partially or fully controlled by mechanical means using: A) Rigid clamping or fixturing B) Pre-bending or setting C) Pre-weld heat treatment D) Post-weld heat treatment E) Subassembly F) A, B, and C - correct answer F) A, B, and C