Terms and Definitions

Question 1

What is welding?

Answer 1

A process of joining two or more materials, usually metals, by using heat, pressure, or both.

Question 2

True or False: Welding can only be performed on metals.

Answer 2

False

Question 3

Fill in the blank: The process of welding that uses an electric arc to melt the workpieces is called __________ welding.

Answer 3

arc

Question 4

What is the primary purpose of a welding electrode?

Answer 4

To conduct current and provide filler material.

Question 5

Multiple Choice: Which of the following is a type of welding? (a) Soldering, (b) Brazing, (c) MIG welding, (d) All of the above

Answer 5

d) All of the above

Question 6

What does MIG stand for in MIG welding?

Answer 6

Metal Inert Gas

Question 7

True or False: TIG welding stands for Tungsten Inert Gas welding.

Answer 7

True

Question 8

What is the role of a shielding gas in welding?

Answer 8

To protect the weld area from atmospheric contamination.

Question 9

Fill in the blank: __________ uses a filler metal that has a lower melting point than the workpieces.

Answer 9

Brazing

Question 10

What is the difference between welding and soldering?

Answer 10

Welding joins materials by melting them, while soldering uses a filler metal with a lower melting point.

Question 11

Multiple Choice: Which welding process uses a non-consumable electrode? (a) MIG, (b) TIG, (c) Stick, (d) Flux-cored

Answer 11

b) TIG

Question 12

What is a weld bead?

Answer 12

The material deposited by the welding process, forming a ridge along the weld line.

Question 13

True or False: Flux is used in welding to help clean the metal surfaces.

Answer 13

True

Question 14

What is the purpose of preheating in welding?

Answer 14

To reduce the risk of cracking and improve weld quality.

Question 15

Fill in the blank: In welding, __________ refers to the angle at which the torch or electrode is held.

Answer 15

welding angle

Question 16

What does the term ‘distortion’ refer to in welding?

Answer 16

The change in shape or dimension of a material due to the heat of welding.

Question 17

Multiple Choice: Which of the following is NOT a welding defect? (a) Porosity, (b) Undercut, (c) Overlap, (d) Fillet

Answer 17

d) Fillet

Question 18

What is a fillet weld?

Answer 18

A weld joining two surfaces at an angle, typically used in corner and edge joints.

Question 19

True or False: A groove weld is made in a joint prepared with a V, U, or J shape.

Answer 19

True

Question 20

What is the function of a welding torch?

Answer 20

To supply heat and, if applicable, filler material to the weld.

Question 21

Fill in the blank: __________ welding uses a wire electrode that is continuously fed through the welding gun.

Answer 21

MIG

Question 22

What does the acronym ‘AWS’ stand for in welding?

Answer 22

American Welding Society

Question 23

Multiple Choice: Which welding process is best suited for thin materials? (a) Stick, (b) MIG, (c) TIG, (d) Submerged Arc

Answer 23

c) TIG

Question 24

What is the purpose of post-weld heat treatment?

Answer 24

To relieve stresses and improve the mechanical properties of the weld.

Question 25

True or False: The term 'slag' refers to the impurities that float on the surface of a molten weld pool.

Answer 25

True

Question 26

What is a backing bar in welding?

Answer 26

A support placed behind a weld joint to provide better penetration and control.

Question 27

Fill in the blank: __________ is a measure of the amount of heat required to melt a specific amount of metal.

Answer 27

Heat input

Question 28

What does 'arc length' refer to in welding?

Answer 28

The distance between the electrode and the workpiece during welding.

Question 29

Multiple Choice: What is the primary concern when welding high-strength steels? (a) Heat treatment, (b) Cracking, (c) Distortion, (d) All of the above

Answer 29

d) All of the above

Question 30

What is a weld joint?

Answer 30

The area where two or more pieces of metal are joined together.

Question 31

True or False: A weld pool is the molten metal formed during the welding process.

Answer 31

True

Question 32

What is the purpose of a welding inspector?

Answer 32

To ensure that welds meet specified standards and quality requirements.

Question 33

Fill in the blank: __________ is a type of welding that uses a laser beam to melt the materials.

Answer 33

Laser welding

Question 34

What does 'penetration' mean in welding?

Answer 34

The depth to which the weld metal has fused into the base metal.

Question 35

Multiple Choice: Which of the following is a common type of welding joint? (a) Butt, (b) Corner, (c) Edge, (d) All of the above

Answer 35

d) All of the above

Question 36

What is the main advantage of using flux-cored arc welding (FCAW)?

Answer 36

It allows for welding in outdoor conditions due to its self-shielding capabilities.

Question 37

True or False: Welding rods are always made from the same material as the base metals being joined.

Answer 37

False

Question 38

What is a key characteristic of stainless steel in welding?

Answer 38

It is resistant to corrosion and oxidation.

Question 39

Fill in the blank: __________ welding is often used in the automotive industry for its speed and efficiency.

Answer 39

MIG

Question 40

What is the purpose of a welder's helmet?

Answer 40

To protect the eyes and face from intense light and spatter during welding.

Question 41

Multiple Choice: Which welding process is known for producing high-quality welds with minimal distortion? (a) MIG, (b) TIG, (c) Stick, (d) Oxy-fuel

Answer 41

b) TIG

Question 42

What does 'weldability' refer to?

Answer 42

The ability of a material to be welded without defects.

Question 43

True or False: Welding can create a strong joint that is often stronger than the base materials.

Answer 43

True