Week 1

Question 1

A separation at the joint root between the work pieces

Answer 1

Root opening

Question 2

What are they four welding testing positions?

Answer 2

One G flat position 2G horizontal position 3G vertical position and 4G overhead position

Question 3

A.W.S. Stands for

Answer 3

American welding Society

Question 4

The ratio of arc time to total time is called

Answer 4

A duty cycle

Question 5

A coded electrode for SMAW that has 60 K psi tensile strength can be welded in any position on carbon steel, and the zero means manufacture characteristics

Answer 5

E6010 electrode

Question 6

This electrode is a solid wire that can be used as a filler rod in GMAW and GTAW due to ER designation, it has a 70 K psi tensile strength, the six is wire chemistry

Answer 6

ER70s-6

Question 7

A 316 stainless steel electrode rod on stainless steel wire that can be used as filler metal in GMAW or GTAW, the L means low carbon

Answer 7

ER316L

Question 8

This electrode is a flux cord electrode that cannot be used as a filler metal, used in FCAW, the seven designates that it has 70 K psi tensile strength, the one means it can be welded in all positions, the T means tubular, and the seven identifies itself as shielded, use on carbon steel

Answer 8

E71T-7

Question 9

Tungsten is used because it has two very important characteristics, which are

Answer 9

High melting, and excellent conductor

Question 10

This is not used because it will melt the tungsten electrode

Answer 10

Reverse polarity

Question 11

When tig welding heavier materials this is required

Answer 11

A higher amperage is required

Question 12

Essentially welding is a safe occupation if proper precautionary measures are always

Answer 12

Observed

Question 13

You must always wear blank when welding, cutting or grinding. Do not look at the arc without this.

Answer 13

Proper eye protection

Question 14

This will prevent illness due to over exposure to hazardous materials in the fume plume

Answer 14

Avoiding breathing the air in the fume plume directly above the arc

Question 15

This will prevent contamination from entering the cylinder

Answer 15

Closing the valve and marking the cylinder empty when compressed gas cylinders are empty

Question 16

An energized holder can arc to a grounded cylinder in cause an explosion that is why when it is not use, you must

Answer 16

Hang it on the brackets provided and never let it touch a compressed gas cylinder

Question 17

Ultraviolet Arkray can cause arc flash to the eyes of nearby people when welding you must

Answer 17

Shield others from the light raise produced by your welding arc

Question 18

One way to fix undercutting in your welding in MIG

Answer 18

To pause at each side of the weld bead when using a weaving technique

Question 19

Some slang terms for shielded, metal arc welding or SMAW is

Answer 19

Stick welding or stick electrode welding

Question 20

While shielded metal arc welding with direct current, you can use two types of electrodes

Answer 20

Electronegative DCEN – straight polarity or electrode positive DCEP – reverse polarity

Question 21

An electric arc process that produces coalescence of metals by heating them with an arc between a continuous filler metal electrode, and the work piece, shielding is obtained entirely from an external supplied gas

Answer 21

This is gas metal arc welding GMAW

Question 22

What type of current electrode is normally used with GMAW

Answer 22

Direct current electrode positive

Question 23

This drives the electrode wire from the wire spool through the cable and gun to the welding arc

Answer 23

The wire feeder

Question 24

The push system in a GMAW is designed so that the wire feed rolls are near

Answer 24

The wire supply and the wire is pushed through the wire conduit to the welding, gun or torch

Question 25

This displays the air around the arc to prevent contamination of the molten pool by oxygen and nitrogen in the atmosphere in GMAW systems

Answer 25

The shielding gas system

Question 26

Steel wires normally have a thin copper coating to

Answer 26

Improve electrical pick up and protect the wire from oxidation

Question 27

Flux cord arc welding, or FCAW shielding is provided by

Answer 27

A flux contained within the tubular electrode

Question 28

True or false flux cord arc welding can only be used with DCEP and DCEN

Answer 28

True or both

Question 29

An ark welding process that produces coalescence of metals by heating them with an arc between a tungsten electrode nonconsumable, and the work pieces shielding is obtained from a gas

Answer 29

This is gas, tungsten arc welding, or GTAW

Question 30

With a high degree of welding skill, the welder controls the torch with one hand and feeds filler metal with the other for GTA W this application is known as

Answer 30

The manual method

Question 31

A foot pedal for GTA W controls current letting up, but not completely has this effect

Answer 31

Decreases current

Question 32

What type of current is used to weld aluminum?

Answer 32

Alternating current

Question 33

The two most commonly used shielding gases

Answer 33

Argon and helium

Question 34

This is a cutting process that cuts anything that conducts heat, and or electric electricity

Answer 34

Thermal cutting

Question 35

This type of cutting is popular process for cutting metal gouging out defects, removing poor welds back gouging route passes and preparing joint edges

Answer 35

This is air carbon arc cutting

Question 36

For proper selection of the filler metal for a specific application what is required

Answer 36

Identification of the base metal

Question 37

Base metal should be preheated at least to this temperature when welding and should not weld when the base temperature is below this degrees

Answer 37

70° and 0

Question 38

If a welder uses a different process or if the welding procedure is altered drastically, this is required

Answer 38

Requalification

Question 39

This type of inspection is the most widely used in most popular welding inspection technique

Answer 39

Visual welding inspection

Question 40

This means reverse polarity

Answer 40

DCEP

Question 41

This means the electrode is negative

Answer 41

DCSP, which also stands for direct current straight polarity

Question 42

This uses a tungsten electrode

Answer 42

GTAW

Question 43

Eight ways to control distortion are

Answer 43

To use Thai bar braces to restrain movement, do not let weldment overheat in isolated area, use a limited number of weld passes by using large electrodes, do not overwhelmed, use back step, welding technique, use minimum amount of bevel angle, and root gap opening,prepare slight gap between the members to be joined to allow for some expansion, and always weld in the same direction

Question 44

A root pass is also known as

Answer 44

The first pass

Question 45

One of the most common gases for me welding is

Answer 45

75% argon and 25% carbon dioxide

Question 46

Do not look at the ark without proper eye protection this will prevent eye injuries and

Answer 46

Arc flash

Question 47

True or false breathing in the air of the fume flume directly above the arc will will cause illness due to over exposure of hazardous materials

Answer 47

True

Question 48

True or false Ferris and non-Ferris metals can be cut with plasma arcs

Answer 48

True

Question 49

When walking into a weld shop, you must assume

Answer 49

All work and work tools are hot