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To measure the strength of a welded joint what mechanical test would you prescribe? a) A transverse weld tension test. b) A charpy test. c) ACTOD test. d) An all weld metal tension test. e) A side bend test. - Correct Answer a) A transverse weld tension test. Select the cutting process that would provide the narrowest heat affected zone when cutting 12.5 mm (0.5 in) thick carbon steel. a) Oxy-acetylene cutting. b) Air-carbon arc cutting. c) Oxy-propane cutting. d) Plasma arc cutting. e) Laser beam cutting - Correct Answer e) Laser beam cutting 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? e) 6G - Correct 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. - Correct Answer 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. c) 0.025 in. d) 0.030 in. - Correct Answer c) 0.025 in. a) Shielded metal arc welding. b) Plasma arc welding. c) Operation of high voltage portable generator sets. d) Radiographic inspection. e) Electroslag and electrogas welding. - Correct Answer d) Radiographic inspection. The ultrasonic transducer is pressed against the plate of a welded joint. The sound travels longitudinally through the plate to the opposite side. The signal seen on the UT screen that comes from this opposite side of the plate: a) Is the initial pulse signal. b) Is the back reflection signal. c) 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. - Correct Answer b) Is the back reflection signal. Which of the following is a stainless steel electrode? a) E4918-1 b) E4918-A1 c) E4818 d) £308-16 e) E4111 - Correct Answer d) E308-16 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, electrode - - Correct Answer b) DC power source, electrode ra Which welding process(es) can result in metallic inclusions in the weld? a) SMAW. b) FCAW. c) GMAW. d) GTAW. e) SAW - Correct Answer d) GTAW. c) It helps to eliminate arc blow. d) It minimizes internal undercut. - Correct Answer c) It helps to eliminate arc blow. 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. - Correct Answer e) Notched bar impact test. Which one of the following SMAW electrodes is restricted to horizontal and flat position welding? a) EXX18 b) £4916 c) EXX10 d) £4924 e) E4914 - Correct Answer d) E4924 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) Acompression test specimen. d) An impact test specimen. e) A spectrographic test. - Correct Answer d) An impact test specimen. Select the electrode that would be best suited for welding high sulphur steels in the flat position: a) £4924 b) E4914 c) E4927 d) E4918 - Correct 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. A crack perpendicular to the length of the weld is called a: a) Transverse crack. b) Longitudinal crack. c) Throat crack. d) Underbead crack. - Correct Answer a) Transverse crack. Which of the following electrodes is classified as a basic electrode: a) E-6010 b) E4914 c) All cellulosic electrodes. d) Electrodes containing titania. e) E4916 - Correct Answer e) E4916 Constant potential power sources with the slope control are used for which type of mode of transfer? a) Globular transfer. b) Spray transfer. c) Pulsed current transfer. d) Short circuit transfer. e) Axial spray transfer. - Correct Answer d) Short circuit transfer.