Welding Questions with correct Answers
(A+ GRADED 100% VERIFIED) 2025/2026
Which two welds are known as "fillet" welds?
a. Butt and T-weld
b. T-weld and lap weld
c. Lap and butt weld
d. Corner and butt weld - ANSWER: b. T-weld and lap weld
An electrical current that flows in one direction (+) for a half cycle and then in the
other direction (-) for a half cycle is:
a. Alternating current (AC)
b. Direct current (DC) - ANSWER: a. Alternating current (AC)
For most arc welding jobs, the length of the arc should be:
a. ¼ inch
b. Equal to the rod length
c. Equal to the width of the base metal
d. Equal to the rod width. - ANSWER: d. Equal to the rod width.
What is the correct arc length when welding in the flat position?
a. The width of the uncoated end of the electrode.
b. The width of the coated end of the electrode.
c. The length of the electrode.
d. The width of the base metal. - ANSWER: a. The width of the uncoated end of the
electrode.
,The point at which a metal's behavior changes from elastic to plastic (onset of
permanent deformation) is referred to as:
a. Yield strength
b. Ultimate tensile strength
c. Modulus of elasticity
d. Young's modulus - ANSWER: a. Yield strength
The family of hardness tests that uses both a minor and major load is called:
a. Brinnell
b. Vickers
c. Rockwell
d. Knoop - ANSWER: c. Rockwell
Stainless steels are defined as having at least what percent chromium?
a. 7%
b. 12%
c. 15%
d. 20% - ANSWER: b. 12%
The process where carbon is added to the surface of a steel to harden it is:
a. Decarburization
b. Pack carburizing
c. Precipitation hardening
d. Quenching - ANSWER: b. Pack carburizing
Which of the following is a function of the flux coating of a SMAW
electrode?
, a. Insulating
b. Alloying
c. Shielding
d. All of the above - ANSWER: d. All of the above
The AC/ DC welding machine is essentially an AC welder with an electronic device
to convert AC to DC power. This electronic device is called a(n):
a. Amplifier
b. Justifier
c. Rectifier
d. Generator - ANSWER: c. Rectifier
What are probable results if the welding current is too high or the arc length is too
great?
a. A narrow, deposit will pile up, irregular shape.
b. The electrode melts too fast, molten puddle too large and irregular.
c. Melts off the electrode in large globules, wobbles from sided to side
d. A wide, splattered, irregular weld.
as the arc weavers. - ANSWER: d. A wide, splattered, irregular weld.
Which of the following is NOT a cause of undercutting?
a. Amperage set too low
b. Amperage set too high
c. Arc too long
d. Electrode held at an incorrect angle - ANSWER: a. Amperage set too low
The last digit in the electrode number designates the _______.
(A+ GRADED 100% VERIFIED) 2025/2026
Which two welds are known as "fillet" welds?
a. Butt and T-weld
b. T-weld and lap weld
c. Lap and butt weld
d. Corner and butt weld - ANSWER: b. T-weld and lap weld
An electrical current that flows in one direction (+) for a half cycle and then in the
other direction (-) for a half cycle is:
a. Alternating current (AC)
b. Direct current (DC) - ANSWER: a. Alternating current (AC)
For most arc welding jobs, the length of the arc should be:
a. ¼ inch
b. Equal to the rod length
c. Equal to the width of the base metal
d. Equal to the rod width. - ANSWER: d. Equal to the rod width.
What is the correct arc length when welding in the flat position?
a. The width of the uncoated end of the electrode.
b. The width of the coated end of the electrode.
c. The length of the electrode.
d. The width of the base metal. - ANSWER: a. The width of the uncoated end of the
electrode.
,The point at which a metal's behavior changes from elastic to plastic (onset of
permanent deformation) is referred to as:
a. Yield strength
b. Ultimate tensile strength
c. Modulus of elasticity
d. Young's modulus - ANSWER: a. Yield strength
The family of hardness tests that uses both a minor and major load is called:
a. Brinnell
b. Vickers
c. Rockwell
d. Knoop - ANSWER: c. Rockwell
Stainless steels are defined as having at least what percent chromium?
a. 7%
b. 12%
c. 15%
d. 20% - ANSWER: b. 12%
The process where carbon is added to the surface of a steel to harden it is:
a. Decarburization
b. Pack carburizing
c. Precipitation hardening
d. Quenching - ANSWER: b. Pack carburizing
Which of the following is a function of the flux coating of a SMAW
electrode?
, a. Insulating
b. Alloying
c. Shielding
d. All of the above - ANSWER: d. All of the above
The AC/ DC welding machine is essentially an AC welder with an electronic device
to convert AC to DC power. This electronic device is called a(n):
a. Amplifier
b. Justifier
c. Rectifier
d. Generator - ANSWER: c. Rectifier
What are probable results if the welding current is too high or the arc length is too
great?
a. A narrow, deposit will pile up, irregular shape.
b. The electrode melts too fast, molten puddle too large and irregular.
c. Melts off the electrode in large globules, wobbles from sided to side
d. A wide, splattered, irregular weld.
as the arc weavers. - ANSWER: d. A wide, splattered, irregular weld.
Which of the following is NOT a cause of undercutting?
a. Amperage set too low
b. Amperage set too high
c. Arc too long
d. Electrode held at an incorrect angle - ANSWER: a. Amperage set too low
The last digit in the electrode number designates the _______.
