CWB 2 Visual Weld Inspector Exam Questions And Answers Practice Questions
with Solutions Newest | Already Graded A
Questions 1-20: Welding Processes & Power Sources
Question 1
A consumable electrode is defined as:
A) An electrode that conducts current but does not melt
B) A carbon rod used for arc gouging
C) An electrode which melts and provides metal to fill the joint
D) A tungsten electrode used for TIG welding
Answer: C
Rationale: By definition, a consumable electrode (e.g., SMAW stick, GMAW wire)
melts during welding to become part of the weld deposit. Non-consumable
electrodes like tungsten do not become part of the weld .
Question 2
The electric current supplied for welding must be transformed from:
A) Low voltage, low amperage to high voltage, high amperage
B) High voltage, low amperage to low voltage, high amperage
,C) High voltage, high amperage to low voltage, low amperage
D) Low voltage, high amperage to high voltage, low amperage
Answer: B
Rationale: Wall outlets provide high voltage/low amperage. Welding requires high
current (amperage) to generate heat, but low voltage for safety and arc stability.
The transformer accomplishes this conversion .
Question 3
Which polarity is chosen most often for DC GTAW (TIG) welding of steels, and
why?
A) DCEN (Direct Current Electrode Negative); more heat at the workpiece for
deeper penetration
B) DCEP (Direct Current Electrode Positive); better cleaning action
C) AC (Alternating Current); prevents arc blow
D) DCEN; prevents tungsten erosion
Answer: A
Rationale: DCEN directs approximately 70% of the arc heat to the workpiece and
30% to the tungsten, allowing deep penetration without melting the electrode tip.
DCEP overheats the tungsten .
,Question 4
Which welding process is generally NOT suitable for use in the overhead position?
A) SMAW (Shielded Metal Arc Welding)
B) GMAW (Gas Metal Arc Welding)
C) FCAW (Flux Cored Arc Welding)
D) SAW (Submerged Arc Welding)
Answer: D
Rationale: SAW requires a granular flux blanket to cover the arc. Gravity pulls the
flux away in overhead or vertical positions, leaving the arc unshielded. SAW is
limited to flat and horizontal positions .
Question 5
What is the major advantage of the Electron Beam welding process?
A) It is the cheapest process available
B) It can weld through thick layers of paint without cleaning
C) It achieves full penetration welds on thick materials in a single pass with a very
narrow HAZ
D) It does not require any safety shielding because there is no radiation
, Answer: C
Rationale: Electron beam welding produces a very high energy density, allowing
deep, narrow penetration with minimal heat input, resulting in a very narrow
Heat Affected Zone (HAZ) and minimal distortion .
Question 6
What type of volt-ampere curve is characteristic of a SMAW (Stick) power source?
A) Constant Voltage (Flat)
B) Increasing voltage with increasing amperage
C) Drooping (Constant Current)
D) Pulsed
Answer: C
Rationale: SMAW requires a constant current (drooping) characteristic. If the
welder holds a long arc (high voltage), the amperage drops significantly; if they
hold a short arc, amperage spikes. This helps the welder control the puddle
despite manual fluctuations in arc length .
Question 7
with Solutions Newest | Already Graded A
Questions 1-20: Welding Processes & Power Sources
Question 1
A consumable electrode is defined as:
A) An electrode that conducts current but does not melt
B) A carbon rod used for arc gouging
C) An electrode which melts and provides metal to fill the joint
D) A tungsten electrode used for TIG welding
Answer: C
Rationale: By definition, a consumable electrode (e.g., SMAW stick, GMAW wire)
melts during welding to become part of the weld deposit. Non-consumable
electrodes like tungsten do not become part of the weld .
Question 2
The electric current supplied for welding must be transformed from:
A) Low voltage, low amperage to high voltage, high amperage
B) High voltage, low amperage to low voltage, high amperage
,C) High voltage, high amperage to low voltage, low amperage
D) Low voltage, high amperage to high voltage, low amperage
Answer: B
Rationale: Wall outlets provide high voltage/low amperage. Welding requires high
current (amperage) to generate heat, but low voltage for safety and arc stability.
The transformer accomplishes this conversion .
Question 3
Which polarity is chosen most often for DC GTAW (TIG) welding of steels, and
why?
A) DCEN (Direct Current Electrode Negative); more heat at the workpiece for
deeper penetration
B) DCEP (Direct Current Electrode Positive); better cleaning action
C) AC (Alternating Current); prevents arc blow
D) DCEN; prevents tungsten erosion
Answer: A
Rationale: DCEN directs approximately 70% of the arc heat to the workpiece and
30% to the tungsten, allowing deep penetration without melting the electrode tip.
DCEP overheats the tungsten .
,Question 4
Which welding process is generally NOT suitable for use in the overhead position?
A) SMAW (Shielded Metal Arc Welding)
B) GMAW (Gas Metal Arc Welding)
C) FCAW (Flux Cored Arc Welding)
D) SAW (Submerged Arc Welding)
Answer: D
Rationale: SAW requires a granular flux blanket to cover the arc. Gravity pulls the
flux away in overhead or vertical positions, leaving the arc unshielded. SAW is
limited to flat and horizontal positions .
Question 5
What is the major advantage of the Electron Beam welding process?
A) It is the cheapest process available
B) It can weld through thick layers of paint without cleaning
C) It achieves full penetration welds on thick materials in a single pass with a very
narrow HAZ
D) It does not require any safety shielding because there is no radiation
, Answer: C
Rationale: Electron beam welding produces a very high energy density, allowing
deep, narrow penetration with minimal heat input, resulting in a very narrow
Heat Affected Zone (HAZ) and minimal distortion .
Question 6
What type of volt-ampere curve is characteristic of a SMAW (Stick) power source?
A) Constant Voltage (Flat)
B) Increasing voltage with increasing amperage
C) Drooping (Constant Current)
D) Pulsed
Answer: C
Rationale: SMAW requires a constant current (drooping) characteristic. If the
welder holds a long arc (high voltage), the amperage drops significantly; if they
hold a short arc, amperage spikes. This helps the welder control the puddle
despite manual fluctuations in arc length .
Question 7
