CWB 1 Exam Questions and Verified Correct Answers

CWB 1 Exam Questions and Verified Correct Answers 1. Which is not a recommended method for surface cleaning of a part for liquid penetrant examination? a) Cleaning with organic solvents. b) Blasting with shot or dull sand. c) Cleaning with de-greasers. d) Use of de-scaling solutions. e) Ultrasonic cleaning methods. - Correct Answer b) Blasting with shot or dull sand. 2. Which of the following weld defects is most likely to be missed by radiography in a weld: a) Undercutting. b) Porosity. c) Slag inclusions. d) Cracking. e) Burn through . - Correct Answer d) Cracking. 3. In the choices given below, metallographic tests would be the least informative with regard to the: a) Presence of the non-metallic inclusions. b) Grain structure in the weld and fusion zone. c) Ability of the material to withstand repeated fluctuating loads. d) Extent and structure of the heat affected zone. e) Number of weld passes. - Correct Answer c) Ability of the material to withstand repeated fluctuating loads. 4. In producing a drawing for a scale of 1:50, what would be the distance represented by a distance on the drawing of 6 em? a) 12 cm. b) 30 cm. c) 50 cm.