Welding Test

Question 1

Which light rays cause severe eye and skin problems?

Answer 1

Visible

Ultra violet

Infrared

Question 2

When protecting your shielded lens in your helmet, you should use_________ lens next to your face?

Answer 2

Plastic

Question 3

What shade of lens is for low amperage sheet metal?

Answer 3

9

Question 4

Arc flash is?

Answer 4

When your eyes are exposed to ultraviolet rays

When you eyes are covered in blisters

The feeling of sand paper in your eyes

Question 5

If you see weld spots after lifting your helmet, you should?

Answer 5

Use a darker shade of lens

Question 6

You should avoid _________ to lessen your chance of shocks?

Answer 6

High temperature

High humidity

Damp wet conditions

Question 7

Don not repair a splice within______feet of the stinger?

Answer 7

10 feet

Question 8

Use GFCI when using _______, ______ and________

Answer 8

Lighting

Grinder

Drilling

Question 9

As constant current machine uses?

Answer 9

Shielded metal arc welding rods

Question 10

Amperage is the measurement expressing the rate of the current flow ‘

True or false

Answer 10

True

Question 11

Voltage is the force that causes the current to flow.

True or false

Answer 11

True

Question 12

A welding machine with a duty cycle of 60 percent rated at 300 amperes will put out its rated amperage at the rated voltage for_______?

Answer 12

6 minutes of welding out of 10

Question 13

Arc blow can be prevented by?

Answer 13

Ac welding

Using a short arc

Welding corners and edges first

Question 14

Welding cables come in 8 sizes what number is the smallest and what number is the biggest?

Answer 14

4 smallest

4/0 biggest

Question 15

The stinger is attatched to a ________. Which is lighter cable

Answer 15

Whip

Question 16

When connecting a ground clamp next to a bearing make sure to?

Answer 16

Put it on the same side as you and away from the bearing

Question 17

If you increase the voltage puddle ________and ________occur. And if you increase the amperage what will occur?

Answer 17

Puddle width and fluidity

Deeper penetration

Question 18

A short arc is used for?

Answer 18

Deeper penetration

Question 19

When using reverse polarity the electrode is connected to the _______ terminal

Answer 19

Positive

Question 20

Straight polarity will cause________?

Answer 20

Shallow penetration

Question 21

When checking polarity use a _____________ rod to check which terminal the electrode is connected to. Reverse polarity will be quoted than straight polarity

Answer 21

e6010

Question 22

If slag gets into the weld it will cause it to fail.

True of false

Answer 22

True

Question 23

A general rule for setting the amperage on the welding machines is?

Answer 23

Turning the rod metal width to a decimal.

Example 1/8 rod = .125 so 125 amps

Question 24

Electrode coatings help by?

Answer 24

Protects the weld pool and molten end of electrode

Keeps out oxygen and nitrogen from he weld area

Form a slag to cover the weld deposite

Question 25

The welding rod EWS E7018 the first two digits are what?

Answer 25

Tensile strength

Question 26

The third digit in e7018 is?

Answer 26

Position 1= all 2=flat horizontal 3=flat only 4= flat and down

Question 27

Final digit in 7018 is the _________

Answer 27

Type of coating and polarity

Question 28

A plug weld is_______?

Answer 28

Used in a hole where 2 plates are lapped over each other

Question 29

A stringer bead width should be _______ times the electrode core wire diameter

Answer 29

2-3 times

Question 30

What are the 4 types of passes?

Answer 30

Root-first past deepest penetration Fill pass- heavy beads are laid, maybe stringer or weave Cover pass- a thin weave coating used to produce a good blend with the plate and to eliminate undercut Fill and finish pass- a heavy pass designed to fill the groove and produce a finished surface at the same time

Question 31

Holding the electrode 90 degrees to the work piece will result in_________?

Answer 31

Less penetration

Question 32

Stray arc strikes are considered ?

Answer 32

Major weld faults

Question 33

When restarting an arc it is better to use which method? Scratch or tapping

Answer 33

Tapping method would be best

Question 34

Holding the electrode at 90 degrees to the work will result in?

Answer 34

Less penetration

Question 35

You would find porosity in your welds if you had a greasy joint to weld? True or false

Answer 35

True

Question 36

GMAW uses what different types of gases?

Answer 36

Argon Helium Or Carbon dioxide

Question 37

The shielding gas protects the weld from what three things?

Answer 37

Oxygen Impurities in the air And Nitrogen

Question 38

When using GMAW on carbon steels you would use a_________ gas to cause an oxidizing behaviour in the weld area?

Answer 38

Carbon dioxide

Question 39

The weld joint that has two pieces welded by their edges is a _______ joint

Answer 39

Butt

Question 40

Fillet welds are sized by ___________?

Answer 40

Leg length of the smallest equal leg triangle that may be drawn within the cross section of the weld

Question 41

What are the 5 basic joints?

Answer 41

Butt joint Lapp joint Corner joint T joint Edge joint

Question 42

What are the 4 basic. Weld types?

Answer 42

Surfacing Plug or slot Fillet Groove

Question 43

What are the 4 variations of fillet welds?

Answer 43

Continuous Intermittent Chain intermittent Staggered intermittent

Question 44

What are some groove weld types?

Answer 44

Square Bevel V U J

Question 45

The size of a plug weld refers to the the _________ of its hole at the base of the weld.

Answer 45

Diameter

Question 46

Which two welding symbols must always be listed?

Answer 46

Reference lines Arrow line

Question 47

What are the different arrow locations?

Answer 47

Arrow side Other side Both sides