Welding Practice Test

Our Welding practice test will help you improve your performance and score on test day.

We present to you 20 questions that cover AWS, gas-shielded processes, welding fit-up issues as well as common mechanical and thermal cutting processes.

Each question contains an explanation that will support your process of learning and revision.

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Question 1

Please mark the major function of the coating on an arc welding electrode:

A	It impacts incomplete penetration.
B	It liquefies the base metal.
C	It acts as a scavenger and removes toxins.
D	It adds moisture and accelerates the cooling rate.

Question 1 Explanation:

The major function of the coating on an arc welding electrode is that it acts as a scavenger and removes toxins.

Question 2

What does square wave mean?

A	It is the shape of the tungsten electrode.
B	It is the shape of the output power.
C	It is the shape of the filler metal.
D	It is the shape of the power source control box.

Question 2 Explanation:

Square wave is the shape of the output power.

Question 3

What kind of protection do shielding gases provide to molten metal?

A	They protect it from being overheated and cooling.
B	They protect it from porosity and brittleness.
C	They protect it from heat and distortion.
D	They protect it from being too cold and not penetrating

Question 3 Explanation:

Shielding gases protect the molten metal from porosity and brittleness.

Question 4

Why is weld backing is used with a process that uses a separate flux and electrode?

A	to prevent melt through and to assure complete penetration of the weld joint
B	to make the overall weld joint stiffer
C	to provide more weight to the weldment
D	to make the material thicker where it is needed

Question 4 Explanation:

Weld backing is used with a process that uses a separate flux and electrode to prevent melt through and to assure complete penetration of the weld joint.

Question 5

What is the weight of a volume of material compared with an equal volume of water?

A	Heft
B	Mass
C	Density
D	Specific gravity

Question 5 Explanation:

Specific gravity is the weight of a volume of material compared with an equal volume of water.

Question 6

What is the percentage range of carbon content of medium carbon steel?

A	0.16% to 0.60%
B	0.05% to 0.15%
C	0.60% to 1.70%
D	1.70% to 2.15%

Question 6 Explanation:

0.16% to 0.60% Typical uses- Bars, plates, structural shapes, pipes

Question 7

Please mark the temperature at which steel begin to solidify if a liquid weld pool is at a very high energy level:

A	3780 F
B	1333 F
C	2780 F
D	3200 F

Question 7 Explanation:

2780 F is the temperature at which steel begins to solidify if a liquid weld pool is at a very high energy level.

Question 8

What is the name of a groove melted into the base metal next to the weld toe or weld root and not filled in?

A	Under fill
B	Craters
C	Undercut
D	Cracks

Question 8 Explanation:

Undercut is a groove melted into the base metal next to the weld toe or weld root and not filled in.

Question 9

What is the term that describes the action when the weld does not combine with another weld or the base metal?

A	Incomplete penetration
B	Incomplete fusion
C	Incomplete bonding
D	Incomplete inclusion

Question 9 Explanation:

Incomplete penetration is the term that describes the action when the weld does not combine with another weld or the base metal.

Question 10

What kind of test should a welder pass to determine if a welder is qualified?

A	Code
B	WPQR
C	WPS
D	PQR

Question 10 Explanation:

WPQR is a test that must be passed for one to become qualified for a Welding Procedure Specification.

Question 11

Please mark the term that best describes the operation where a welder or welding operator controls a molten weld pool and the weld pool has a side to side motion that is transverse to the travel direction:

A	Weaving
B	Oscillation
C	Whipping
D	All of the above

Question 11 Explanation:

Weaving is the name of the operation where a welder or welding operator controls a molten weld pool and the weld pool has a side to side motion that is transverse to the travel direction.

Question 12

Please mark the term that describes a small pore or discontinuity that appears as a round bright area over a broken surface:

A	Crack
B	Fisheye
C	Spider web
D	Nucleation

Question 12 Explanation:

Fisheye is the term that describes a small pore or discontinuity that appears as a round bright area over a broken surface.

Question 13

What is arc time?

A	It is the non-arc time.
B	It is the total time the welder is clocked into work.
C	It is the total arc and non-arc time.
D	It is the time the arc is on during the arc welding operation.

Question 13 Explanation:

Arc time is the time the arc is on during the arc welding operation.

Question 14

Please mark the difference between back and backing welds:

A	There is no difference.
B	The difference is in the equipment used.
C	The difference is the sequence of how the welds are made.
D	The difference is in the materials used.

Question 14 Explanation:

The difference between back and backing welds is in the sequence of how the welds are made.

Question 15

Detects surface discontinuities only, can also verify fit-up, joint configuration, weld dimensions, and profiles- what NDE process does this describe?

A	VT
B	MT
C	RT
D	PT

Question 15 Explanation:

VT describes Visual Examination and it is the most common NDE process.

Question 16

Please mark the minimum oxygen level for a confined space:

A	14%
B	19.5%
C	23.5%
D	16%

Question 16 Explanation:

19.5% is the minimum oxygen level for a confined space.

Question 17

What kind of material should be used for a normal pant and shirt material worn around welding?

A	Cotton
B	Synthetics
C	Polyester
D	Rayon

Question 17 Explanation:

Cotton should be used for welding operations.

Question 18

What does a supervisor need to verify prior welding?

A	They need to verify that the welding procedure specifications and welder qualifications are in order.
B	They need to verify the cost metric.
C	They need to verify the quality metric.
D	They need to verify the safety metric.

Question 18 Explanation:

Prior welding, a supervisor needs to verify that the welding procedure specifications and welder qualifications are in order.

Question 19

Please choose the established rule for measuring or judging capacity, quantity, content, etc. of technical systems?

A	Welder Continuity Report
B	Specification
C	Standards
D	Recommended Practices

Question 19 Explanation:

Standards are established as requirements issued by the government about technical systems.

Question 20

What is the action that describes the ability of a liquid to flow in a narrow space or root opening?

A	Capillary action
B	Suction action
C	Cooling action
D	Heating action

Question 20 Explanation:

Capillary action is the ability of a liquid to flow in a narrow space or root opening.

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