CWB Level 2 Closed Book Exam - Questions and Answers

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CWB Level 2 Closed Book Exam - Questions and Answers 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 po... wer source, electrode - Which welding process(es) can result in metallic inclusions in the weld? a) SMAW. b) FCAW. c) GMAW. d) GTAW. e) SAW 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 cm. b) 30 cm. c) 50 cm. d) 240 cm. 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. c) Horizontal response data. d) Noise to signal ratio. e) Signal amplitude. An advantage of an AC welding circuit is: a) It is best used with large electrodes on thin materials. b) It is best used with small electrodes on thin sections. c) It helps to eliminate arc blow. d) It minimizes internal undercut. The resistance of steel to failure by brittle fracture is commonly assessed by conducting a: a) Rockwell C hardness test. b) Tensile test. c) Chemical analysis. d) Hydrogen embrittlement test. e) Notched bar impact test. Which one of the following SMAW electrodes is restricted to horizontal and flat position welding? a) EXX18 b) E4916 c) EXX10 d) E4924 e) E4914 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. [Show More]

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