CSWIP 3.1 model Questions and answers. Paper 3. скачать в хорошем качестве

CSWIP 3.1 model Questions and answers. Paper 3.

CSWIP 3.1 model Questions and answers. Paper 1. CSWIP 3.1    • Видео   Facebook   / sandrine.hill5615   Instagram   / yallappa_metre   Twitter   / yallappa_metre   1 Which of the following steels is considered non-magnetic? a 18%Cr, 8%Ni. b 2.25Cr 1Mo. c 9%Cr,1Mo. d 9%Ni. 2 Weld spatter during MMA welding is most likely to be caused by: a Excessive current. b Incorrect baking and storage of electrodes. c Bad batch of electrodes. d Too low an OCV. 3 A qualified Welding Procedure Specification is used to: a Give instruction to the welder. b Give information to the welding inspector. c Give confidence that welds will have the specified properties. d All of the above. 4 An arc strike (stray flash) on a steel component is regarded by some codes as unacceptable because: a It will cause copper contamination. b It may cause hard spots. c It may give cracking. d Both b and c. 5 In a transverse tensile test brittleness would be indicated if: a There is a reduction in cross-section at the position of fracture. b The fracture surface is flat and featureless but has a rough surface. c Fracture occurred in the weld metal. d The fracture face shows beach marks. 6 The surface of a fatigue crack will: a Be rough and torn. b Have sharp chevron markings. c Be smooth. d Have shear lips. 7 What does the number 141 refer to on this drawing? a WPS number. b Welding process. c Filler material. d Acceptance standard. 8 The current/polarity used for TIG welding all materials except aluminium and magnesium is: a DC negative. b DC positive. c AC. d Square wave AC. 9 A typical temperature range for baking basic coated electrodes is: a 150-200°C. b 200-250°C. c 300-350°C. d 400-450°C. 10 If welding travel speed is doubled but the current and voltage remain the same the heat input will be: a Reduced by 50%. b Increased by a factor of two. c About the same. d Reduced by approximately 25%. 11 Which type of submerged arc welding flux is susceptible to moisture pick-up? a Neutral. b Agglomerated. c Fused. d All about the same. 12 A large grain size in the HAZ of a C-Mn steel weld joint may have: a Low ductility. b Low toughness. c High toughness. d High tensile strength. 13 A STRA test is used to measure the: a Tensile strength of the welded joint. b Level of residual stress in butt joints. c Fracture toughness of the HAZ. d Through-thickness ductility of a steel plate (the Z direction). 14 The risk of hydrogen cracking is greater when MMA welding: a C-Mn steels. b Austenitic stainless steel. c Low alloy steels for elevated temperature service. d Low carbon steels for cryogenical service. 15 The property of a material which has the greatest influence on welding distortion is its: a Yield strength. b Coefficient of thermal expansion. c Elastic modulus. d Coefficient of thermal conductivity. 16 Which of the following is a suitable shielding gas for FCAW of stainless steels? a 100% argon. b 70% argon + 30%He. c Argon + 5% hydrogen. d Argon + 20% CO2. 17 The presence of iron sulphides in a weld bead may cause: a Solidification cracking. b Hydrogen cracking. c Lamellar tearing. d Weld decay. 18 A macrosection is particularly good for showing: a The weld metal HAZ microstructure. b Overlap. c Joint hardness. d Spatter. 19 Which of the following procedures would be expected to produce the least distortion in a 15mm straight butt weld? a TIG weld, single-sided, multi-pass. b MMA weld, single-sided, multi-pass. c MMA weld, double-sided, multi-pass. d SAW weld, 1 pass per side. 20 A suitable gas/gas mixture for GMAW of aluminium is: a 100%CO2. b 100% Argon. c 80% argon + 20% CO2. d 98% argon + 2% O2. 21 Which of the following is associated with SAW more often than it is with MMA welds? a Hydrogen cracking in the HAZ. b Solidification cracking in the weld metal. c Reheat cracking during PWHT. d Lamellar tearing. 22 EN ISO 5817 (Level C) specifies that the limit for the diameter (D) of a single pore in a weld is: D ≤ 0.3s, but max.4mm where s = material thickness. For which of the following situations is the pore acceptable? a s = 20mm, measured pore diameter = 5mm. b s = 15mm, measured pore diameter = 4.5mm. c s = 10mm, measured pore diameter = 3mm. d s = 10mm, measured pore diameter = 3.5mm. 23 To measure arc voltage accurately it is recommended that the voltmeter should be connected: a Across the arc and as near as practical to the arc. b Across the power source terminals prior to arc initiation. c Across the power source terminals during the welding operation. d Anywhere in the circuit. 24 Lamellar tearing has occurred in a steel fabrication. What technique could have been used to find it before the weld was made? a X-ray examination. b Liquid penetrant examination. c Ultrasonic examination. d It could not have been found by any inspection method. #cswip3.1 #weldinginspector please support