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Q 1: C
See Section 17.3.1.
Q 2: B
See Figure 4.6.
Q 3: D
See Figure 20.1.
Q 4: D
Keywords “highest preheat temperature”, See Figure C.1 of EN 1011-2.
Q 5: A
See Section 19.4.1.
Q 6: A
Preheat > slow cooling rate> increased travel speed.
Q 7: A
Keyword “fast travel speed” > fast cooling rate > narrow HAZ > increase hardness.
Q 8: C
Keyword “high heat input” > lowest toughness at HAZ.
Q 9: A
Arc energy = (AxVx60)/(TSx1000) = (350x32)/(310x1000).
See Section 10.3.
Q 10: A
Small diameter electrode > reduce A/V > low heat input.
Multi-passes > high degree of grain refinement.
Q 11: A
See Section 4.1.1.
Don’t confuse with “all weld tensile test”.
Q 12: A
See Section 4.1.1 and 4.1.3 – Objective.
Tensile/VPN test have unit à quantitative tests.
Q 13: A
See Section 4.1.6.
Q 14: A
See Section 8.
Q 15: B
See Section 8.
Q 16: D
See Section 6.2.
Q 17: D
See Duties of Welding Inspector.
Q 18: B
See Section 17.6.1.
Q 19: D
See Section 6.2.3.
Q 20: B
MT will detect surface and sub-surface defects.
See Section 5.4 and 5.5.
Q 21: B
See Section 3.4.4 – tungsten inclusion.
See Section 5.2.4.
Q 22: D
See Section 17.5.3.
Q 23: B
Keywords “no internal access” > access from outside > DWSI method.
Q 24: D
See Section 19.6.5.
Q 25: A
Keywords “dark straight line” in the RT film, check density.
Q 26: D
Follow the approved WPS.
Q 27: B
Symmetric weld > omit dash line.
Intermittent 50 mm in length > See Figure 9.9.
Q 28: B
Excessive voltage > increase flux consumption.
See Figure 14.4.
Q 29: C
Keyword “never baked” because damage the coating.
Q 30: C
See Figure 16.3.
Q 31: B
Fatigue crack occurs during operation.
Answer a à ductile fracture.
Answer b/d à brittle fracture.
Q 32: A
E6013 à Rutile coating, general purpose.
Q 33: D
See Section 17.4 and Section 7.3.
Q 34: A
Commonly used inert gas.
Q 35: A
Good finding the planar defects by UT, see Section 5.3.2.
See advantage of RT in the Section 5.2.5.
Q 36: A
See Section 5.2.3.
Q 37: C
Increased %C > increased hardness and strength, decreased ductility, decreased toughness.
Q 38: C
Means “how to avoid solidification crack”, see Section 17.4.3.
Q 39: A
Gauge length = (72-50)/50 %.
See Figure 4.5.
Q 40: C
See formula in the Section 2.6.2.
Q 41: B
Q 42: B
See Section 9.5 and 9.12.
Q 43: A
See Section 16.2, 70 means 70ksi of the minimum tensile strength.
Q 44: A
Keyword “randomly torn”. See answer Q 31 of this part.
Q 45: B
DCEP, see Section 11.3.4.
Q 46: B
See Section 7.3.
Q 47: C
See Section 5.2.5.
Q 48: D
C-Mn: HAZ cracking, see Section17.3.3.
HSLA: weld metal, see Section17.3.3.
Weld zone = HAZ + Weld metal, see Figure 2.8.
Q 49: B
Lamellar tearing occurs after welding, only on base metal. See Section 17.5.1.
Q 50: D
Keyword “control travel speed and arc gap, 80%Ag+20%CO2” > See Section 13.1.
See Section 17.3.1.
Q 2: B
See Figure 4.6.
Q 3: D
See Figure 20.1.
Q 4: D
Keywords “highest preheat temperature”, See Figure C.1 of EN 1011-2.
Q 5: A
See Section 19.4.1.
Q 6: A
Preheat > slow cooling rate> increased travel speed.
Q 7: A
Keyword “fast travel speed” > fast cooling rate > narrow HAZ > increase hardness.
Q 8: C
Keyword “high heat input” > lowest toughness at HAZ.
Q 9: A
Arc energy = (AxVx60)/(TSx1000) = (350x32)/(310x1000).
See Section 10.3.
Q 10: A
Small diameter electrode > reduce A/V > low heat input.
Multi-passes > high degree of grain refinement.
Q 11: A
See Section 4.1.1.
Don’t confuse with “all weld tensile test”.
Q 12: A
See Section 4.1.1 and 4.1.3 – Objective.
Tensile/VPN test have unit à quantitative tests.
Q 13: A
See Section 4.1.6.
Q 14: A
See Section 8.
Q 15: B
See Section 8.
Q 16: D
See Section 6.2.
Q 17: D
See Duties of Welding Inspector.
Q 18: B
See Section 17.6.1.
Q 19: D
See Section 6.2.3.
Q 20: B
MT will detect surface and sub-surface defects.
See Section 5.4 and 5.5.
Q 21: B
See Section 3.4.4 – tungsten inclusion.
See Section 5.2.4.
Q 22: D
See Section 17.5.3.
Q 23: B
Keywords “no internal access” > access from outside > DWSI method.
Q 24: D
See Section 19.6.5.
Q 25: A
Keywords “dark straight line” in the RT film, check density.
Q 26: D
Follow the approved WPS.
Q 27: B
Symmetric weld > omit dash line.
Intermittent 50 mm in length > See Figure 9.9.
Q 28: B
Excessive voltage > increase flux consumption.
See Figure 14.4.
Q 29: C
Keyword “never baked” because damage the coating.
Q 30: C
See Figure 16.3.
Q 31: B
Fatigue crack occurs during operation.
Answer a à ductile fracture.
Answer b/d à brittle fracture.
Q 32: A
E6013 à Rutile coating, general purpose.
Q 33: D
See Section 17.4 and Section 7.3.
Q 34: A
Commonly used inert gas.
Q 35: A
Good finding the planar defects by UT, see Section 5.3.2.
See advantage of RT in the Section 5.2.5.
Q 36: A
See Section 5.2.3.
Q 37: C
Increased %C > increased hardness and strength, decreased ductility, decreased toughness.
Q 38: C
Means “how to avoid solidification crack”, see Section 17.4.3.
Q 39: A
Gauge length = (72-50)/50 %.
See Figure 4.5.
Q 40: C
See formula in the Section 2.6.2.
Q 41: B
Q 42: B
See Section 9.5 and 9.12.
Q 43: A
See Section 16.2, 70 means 70ksi of the minimum tensile strength.
Q 44: A
Keyword “randomly torn”. See answer Q 31 of this part.
Q 45: B
DCEP, see Section 11.3.4.
Q 46: B
See Section 7.3.
Q 47: C
See Section 5.2.5.
Q 48: D
C-Mn: HAZ cracking, see Section17.3.3.
HSLA: weld metal, see Section17.3.3.
Weld zone = HAZ + Weld metal, see Figure 2.8.
Q 49: B
Lamellar tearing occurs after welding, only on base metal. See Section 17.5.1.
Q 50: D
Keyword “control travel speed and arc gap, 80%Ag+20%CO2” > See Section 13.1.
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