Qualification Certificate Welder (CCQ) Practice
Exam Questions And Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A | Instant
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1. Which welding process uses a continuously fed consumable
electrode and shielding gas?
A) SMAW
B) GTAW
C) GMAW
D) FCAW
This is Gas Metal Arc Welding, which uses a continuous wire
electrode and shielding gas.
2. What is the primary purpose of a flux in welding?
A) Increase heat input
B) Protect the weld from atmospheric contamination
C) Reduce current
D) Clean the welding machine
Flux melts during welding to shield the molten metal from oxygen
and nitrogen.
3. Which welding position is the most difficult to weld in?
A) Flat
B) Horizontal
C) Vertical
D) Overhead
, Overhead welding is more challenging due to gravity causing
molten metal to fall.
4. What does SMAW stand for?
A) Submerged Metal Arc Welding
B) Shielded Metal Arc Welding
C) Shielded Metal Arc Welding
D) Semi-Metal Arc Welding
It is the process where a coated electrode is used to create a weld
with shielding from the flux coating.
5. Which gas is commonly used for shielding in GTAW for stainless
steel?
A) Oxygen
B) Helium
C) Argon
D) Carbon dioxide
Argon is inert and prevents oxidation of stainless steel during
GTAW.
6. What is the main difference between AC and DC welding?
A) AC is safer
B) DC provides more spatter
C) DC provides a more stable arc and deeper penetration
D) AC requires shielding gas
Direct current stabilizes the arc and allows deeper penetration into
the base metal.
7. What is the recommended PPE for welding?
A) Gloves only
B) Helmet, gloves, jacket, and protective footwear
, C) Face mask only
D) Ear plugs only
Proper PPE protects against burns, sparks, radiation, and fumes.
8. What is the main cause of porosity in a weld?
A) Low heat input
B) Contamination on the base metal or filler
C) Using too long an electrode
D) High current
Porosity is caused by trapped gases from rust, oil, or moisture.
9. Which electrode classification is correct for a 6010 electrode?
A) 60 = tensile strength, 10 = position and current type
B) 60 = tensile strength, 10 = position and current type
C) 60 = diameter, 10 = coating type
D) 60 = alloy type, 10 = flux type
The first two digits indicate tensile strength, the last two indicate
welding position and current type.
10. Which welding defect is characterized by a crack along the
weld toe?
A) Porosity
B) Undercut
C) Crater crack
D) Spatter
Crater cracks occur due to improper fill-in or sudden cooling at the
weld end.
11. In FCAW, what provides shielding?
A) Flux coating on the electrode
B) Both flux core and external gas (depending on type)
Exam Questions And Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A | Instant
Download Pdf
1. Which welding process uses a continuously fed consumable
electrode and shielding gas?
A) SMAW
B) GTAW
C) GMAW
D) FCAW
This is Gas Metal Arc Welding, which uses a continuous wire
electrode and shielding gas.
2. What is the primary purpose of a flux in welding?
A) Increase heat input
B) Protect the weld from atmospheric contamination
C) Reduce current
D) Clean the welding machine
Flux melts during welding to shield the molten metal from oxygen
and nitrogen.
3. Which welding position is the most difficult to weld in?
A) Flat
B) Horizontal
C) Vertical
D) Overhead
, Overhead welding is more challenging due to gravity causing
molten metal to fall.
4. What does SMAW stand for?
A) Submerged Metal Arc Welding
B) Shielded Metal Arc Welding
C) Shielded Metal Arc Welding
D) Semi-Metal Arc Welding
It is the process where a coated electrode is used to create a weld
with shielding from the flux coating.
5. Which gas is commonly used for shielding in GTAW for stainless
steel?
A) Oxygen
B) Helium
C) Argon
D) Carbon dioxide
Argon is inert and prevents oxidation of stainless steel during
GTAW.
6. What is the main difference between AC and DC welding?
A) AC is safer
B) DC provides more spatter
C) DC provides a more stable arc and deeper penetration
D) AC requires shielding gas
Direct current stabilizes the arc and allows deeper penetration into
the base metal.
7. What is the recommended PPE for welding?
A) Gloves only
B) Helmet, gloves, jacket, and protective footwear
, C) Face mask only
D) Ear plugs only
Proper PPE protects against burns, sparks, radiation, and fumes.
8. What is the main cause of porosity in a weld?
A) Low heat input
B) Contamination on the base metal or filler
C) Using too long an electrode
D) High current
Porosity is caused by trapped gases from rust, oil, or moisture.
9. Which electrode classification is correct for a 6010 electrode?
A) 60 = tensile strength, 10 = position and current type
B) 60 = tensile strength, 10 = position and current type
C) 60 = diameter, 10 = coating type
D) 60 = alloy type, 10 = flux type
The first two digits indicate tensile strength, the last two indicate
welding position and current type.
10. Which welding defect is characterized by a crack along the
weld toe?
A) Porosity
B) Undercut
C) Crater crack
D) Spatter
Crater cracks occur due to improper fill-in or sudden cooling at the
weld end.
11. In FCAW, what provides shielding?
A) Flux coating on the electrode
B) Both flux core and external gas (depending on type)
