CWB Level 2 Welding Exam Practice Questions, Exams of Welding Inspection Technologies

Download CWB Level 2 Welding Exam Practice Questions and more Exams Welding Inspection Technologies in PDF only on Docsity!

CWB Level 2 Closed Book Practice Exams

To measure the strength of a welded Joint what mechanical test would you prescribe? a) A transverse weld tension test. b) A charpy test. co) ACTOD test. d) An all weld metal Lension test. e) Aside bend test.- ANSWE-a) A transverse weld tension test. Select the cutting process that would provide the narrowest heat affected zone when cutting 12.5 m) thick carbon stecl. a) Oxy-acetylone cntling. b) Air-carbon are cutting. ¢) Oxy-propane cutting. d) Plasma are cutting. c) Laser beam cutting - ANSWER-c) Laser beam entuing Which of the following refers to a welder test where a pipe assembly is placed vertically and the Joint welded in the horizontal position without rotating the assembly? a) 1G b) 2G 0) 3G d) 5G €) 6G - ANSWER-b) 2G Which of the following imperfections is normally considered as unacceptable regardless of size or location? a) Porosity. b) Crack. c) Inadequate penetration. d) Lamination. e) Burn-through. - ANSWEF-b) Crack. Select the correct penetrameter thickness for 2% sensitivity when radiographing a weldment 1.25 inches in thickness. a) 0.012 in. b) 0.015 in. ¢) 0.023 in. d) 0.030 in. - ANSWER-c} 0.023 in. Which of the following statements concerning porosity is true? a) Porosity cannot be trapped within a weld. b) Porosity moves up through later passes and will show only in a final pass. a) Is the initial pulse signal. b) Is the back reflection signal. ce) Is the front reflection signal. d) Must be equal in amplitude to any defect signal. e) Cannot be used for establishing the thickness of the material under test. - ANSWER) Is the back reflection signal. Which of the following is a stainless steel electrode? a) E4918-1 b) E4918-Al c) E4818 d) E308-16 e) E4111 - ANSWER-d) £308-16 Reverse polarity refers to the use of a: a) AC power source, electrode + b) DC power source, electrode + c) AC power source, electrode - d) DC power source, electrade - - ANSWEE+b) DC power source, electrode + Which welding process(es) can result in metallic inclusions in the weld? a) SMAW. b) FCAW. co) GMAW. d) GTAW. e) SAW - ANSWER-d) GTAW. In producing a drawing for a scale of 1:50, what would be the distance represented by a distance on the drawing of 6 cm? a) 12 om. b) 30 cm. ¢) 50 cm. d) 240 cm. €) 300 cm. - ANSWER-e) 300 cm. As a general rule, weld discontinuities detected by ultrasonic testing are accepted or rejected on the basis of: a) Vertical linearity. b) Time base analysis. ¢) Horizontal response data. d) Noise to signal ratio. e) Signal amplitude. - ANSWER-e) Signal amplitude. The mechanical test used to determine the ability of a material to resist failure by brittle fracture requires the use of: a) A tensile test specimen. b) A bend test specimen. c) A compression test specimen. d) An impact test specimen. e) A spectrographic test. - ANSWERd) An impact test specimen. Select the electrode that would be best suited for welding high sulphur steels in the flat position: a) E4924 b) E4914 ¢) E4927 d) E4918 - ANSWER-d) E4918 Two steel plates are to be welded together. Each plate has a bevel cut on the face to be welded. What type of weld will be made? a) Double bevel groove weld. b) Double vee groove weld. c) Single bevel groove weld. d) Vee groove weld. e) Flare bevel groove weld. - ANSWER-d) Vee groove weld. Which side of a fillet weld gauge is used for measuring the size of a concave faced fillet weld? a) Leg side. b) Straight side. c) Throat side. d) Face side. e) Toe side. - ANSWERc} Throat side. A backing gas is used to: a) Prevent root burn-through. b) Reduce root concavity. c¢) Support the molten root metal. d) Prevent root oxide contamination. - ANSWER-d) Prevent root oxide contamination. Acrack perpendicular to the length of the weld is called a: a) Transverse crack. b) Longitudinal crack. ¢) Throat crack. d) Underbead crack. - ANSWER-a) Transverse crack. Which of the following electrodes is classified as a basic electrode: