AWS Associate Welding Inspector (AWI)
Practice Exam Questions And Correct
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Rationales 2026 Q&A | Instant
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1. What is the primary purpose of a welding procedure specification
(WPS)?
A. To provide a record of weld inspections
B. To serve as a safety guideline
C. To provide detailed instructions for welding a specific joint
D. To describe the types of defects
Rationale: A WPS outlines the parameters, techniques, and materials
required to produce a weld of acceptable quality.
2. Which welding process uses a non-consumable tungsten electrode?
A. Shielded Metal Arc Welding (SMAW)
B. Gas Tungsten Arc Welding (GTAW/TIG)
,C. Gas Metal Arc Welding (GMAW/MIG)
D. Flux-Cored Arc Welding (FCAW)
Rationale: GTAW uses a tungsten electrode that does not melt, and filler
metal is added separately.
3. The purpose of preheating a base metal before welding is to:
A. Increase the welding speed
B. Make the electrode melt faster
C. Reduce the risk of cracking
D. Increase electrical conductivity
Rationale: Preheating slows the cooling rate, minimizing thermal stresses
and reducing the risk of hydrogen-induced cracking.
4. What is the primary cause of undercut in welding?
A. Improper cleaning
B. Low welding current
C. Excessive welding current or incorrect technique
D. Incorrect filler material
Rationale: Undercut is typically caused by high welding current or poor
manipulation of the welding torch, which erodes the base metal.
5. Which inspection method can detect surface cracks in welds?
A. Radiographic Testing (RT)
B. Liquid Penetrant Testing (PT)
,C. Ultrasonic Testing (UT)
D. Magnetic Particle Testing (MT)
Rationale: PT uses a dye or fluorescent penetrant that enters surface
discontinuities to reveal cracks.
6. In SMAW, what is the primary function of the flux coating on the
electrode?
A. To increase electrode electrical conductivity
B. To shield the molten weld pool from atmospheric contamination
C. To decrease the melting rate of the electrode
D. To cool the weld rapidly
Rationale: The flux melts and produces gases that protect the molten weld
from oxygen and nitrogen in the air.
7. Which AWS document provides standards for visual inspection of
welds?
A. AWS D1.2
B. ASME Section IX
C. AWS QC1
D. ISO 3834
Rationale: AWS QC1 establishes visual inspection criteria for welds,
including acceptable imperfections.
8. What type of welding defect is characterized by small cavities in the
weld metal caused by gas entrapment?
, A. Undercut
B. Slag inclusion
C. Porosity
D. Crater crack
Rationale: Porosity is formed when gases are trapped in the weld metal
during solidification.
9. Which nondestructive testing method is best for detecting subsurface
defects?
A. Liquid Penetrant Testing (PT)
B. Visual Testing (VT)
C. Radiographic Testing (RT)
D. Dye Penetrant Magnetic Testing
Rationale: RT passes X-rays or gamma rays through the weld, revealing
internal defects on film.
10. What does the term “heat-affected zone” (HAZ) refer to?
A. The molten weld metal
B. The electrode coating area
C. The area of base metal affected by welding heat but not melted
D. The welding equipment
Rationale: HAZ experiences thermal cycles that can alter mechanical
properties and microstructure.
Practice Exam Questions And Correct
Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant
Download Pdf
1. What is the primary purpose of a welding procedure specification
(WPS)?
A. To provide a record of weld inspections
B. To serve as a safety guideline
C. To provide detailed instructions for welding a specific joint
D. To describe the types of defects
Rationale: A WPS outlines the parameters, techniques, and materials
required to produce a weld of acceptable quality.
2. Which welding process uses a non-consumable tungsten electrode?
A. Shielded Metal Arc Welding (SMAW)
B. Gas Tungsten Arc Welding (GTAW/TIG)
,C. Gas Metal Arc Welding (GMAW/MIG)
D. Flux-Cored Arc Welding (FCAW)
Rationale: GTAW uses a tungsten electrode that does not melt, and filler
metal is added separately.
3. The purpose of preheating a base metal before welding is to:
A. Increase the welding speed
B. Make the electrode melt faster
C. Reduce the risk of cracking
D. Increase electrical conductivity
Rationale: Preheating slows the cooling rate, minimizing thermal stresses
and reducing the risk of hydrogen-induced cracking.
4. What is the primary cause of undercut in welding?
A. Improper cleaning
B. Low welding current
C. Excessive welding current or incorrect technique
D. Incorrect filler material
Rationale: Undercut is typically caused by high welding current or poor
manipulation of the welding torch, which erodes the base metal.
5. Which inspection method can detect surface cracks in welds?
A. Radiographic Testing (RT)
B. Liquid Penetrant Testing (PT)
,C. Ultrasonic Testing (UT)
D. Magnetic Particle Testing (MT)
Rationale: PT uses a dye or fluorescent penetrant that enters surface
discontinuities to reveal cracks.
6. In SMAW, what is the primary function of the flux coating on the
electrode?
A. To increase electrode electrical conductivity
B. To shield the molten weld pool from atmospheric contamination
C. To decrease the melting rate of the electrode
D. To cool the weld rapidly
Rationale: The flux melts and produces gases that protect the molten weld
from oxygen and nitrogen in the air.
7. Which AWS document provides standards for visual inspection of
welds?
A. AWS D1.2
B. ASME Section IX
C. AWS QC1
D. ISO 3834
Rationale: AWS QC1 establishes visual inspection criteria for welds,
including acceptable imperfections.
8. What type of welding defect is characterized by small cavities in the
weld metal caused by gas entrapment?
, A. Undercut
B. Slag inclusion
C. Porosity
D. Crater crack
Rationale: Porosity is formed when gases are trapped in the weld metal
during solidification.
9. Which nondestructive testing method is best for detecting subsurface
defects?
A. Liquid Penetrant Testing (PT)
B. Visual Testing (VT)
C. Radiographic Testing (RT)
D. Dye Penetrant Magnetic Testing
Rationale: RT passes X-rays or gamma rays through the weld, revealing
internal defects on film.
10. What does the term “heat-affected zone” (HAZ) refer to?
A. The molten weld metal
B. The electrode coating area
C. The area of base metal affected by welding heat but not melted
D. The welding equipment
Rationale: HAZ experiences thermal cycles that can alter mechanical
properties and microstructure.
