Welding ILMS

Question 1

2 Basic types of burns

Answer 1

Surface or minor. And major burns

Question 2

Major burns destroy and underlying what?

Answer 2

Fat

Question 3

What are the most serious arc welding hazards ?

Answer 3

Light rays emitted from the electric arc, and oxyfuel flame

Question 4

The arc flash is the term commonly used to describe eyes burned by what rays?

Answer 4

Ultra violet rays

Question 5

Fires can be cause by what?

Answer 5

Torch flame, sparks, slang, and hot metal touching combustible material

Question 6

What are fumes

Answer 6

Small condensed particles of metal that vaporize during welding and cutting operations

Question 7

Gasses such as argon, helium, or carbon dioxide aren’t toxic, but inhaling too much will result in what?

Answer 7

Suffocation

Question 8

Metal fume fever produces flu-like symptoms from inhaling fumes of certain metal ____

Answer 8

Oxides

Question 9

Acetylene and oxygen or acetylene and air form what?

Answer 9

A highly explosive mixture

Question 10

What is the most common method of making containers that hold flammable materials safe for welding g or cutting?

Answer 10

Steaming

Question 11

What does excessive heat in the welding environment cause?

Answer 11

Fainting, heat stress, dehydration and exhaustion

Question 12

Noise produced by welding may cause what?

Answer 12

Deafness, headaches, rise in blood pressure, accidents. Etc

Question 13

What can a compressed air system operate between In PSI?

Answer 13

100psi-150psi

Question 14

Voltages used for manual arc welding are low and don’t cause what?

Answer 14

Electrical shocks

Question 15

A ground fault circuit interrupter senses what?

Answer 15

Current flow and breaks the circuit in about 1-40 of a second

Question 16

Safety glasses should have side shields and be what?

Answer 16

Shatter resistant

Question 17

Welding goggles are worn when oxyfuel welding for what?

Answer 17

To filter out harmful light rays and to prevent slag and sparks from going in your eyes

Question 18

Best clothing materials are:

Answer 18

Leather, wool, cotton or denim

Question 19

The three requisites necessary for a fire or a explosion are:

Answer 19

Fuel, heat, oxygen

Question 20

What’s the maximum safe working pressure of acetylene gas?

Answer 20

15 PSI

Question 21

The stationary spot welding machine performs what?

Answer 21

The welding cycle automatically

Question 22

What Uncoated materials are easily spot welded?

Answer 22

Black iron

Question 23

Welding tips must be what?

Answer 23

Accurately aligned

Question 24

What is the oldest welding process

Answer 24

The carbon arc welding process

Question 25

The filler rod for light sheet metal carbon arc welding is what and coated with what?

Answer 25

A copper coated Bronze alloy rod

Question 26

What welding process is knowen as stick welding?

Answer 26

Shielded metal arc welding

Question 27

What is mig welding knowen as

Answer 27

Gas metal arc welding

Question 28

What is tig welding known as

Answer 28

Tungsten arc welding

Question 29

The three types of flames possible with a standard oxyacetylene welding or cutting torch are:

Answer 29

Carbonizing, neutral, oxidizing

Question 30

What flame has no excess of acetylene or oxygen?

Answer 30

An neutral flame

Question 31

And oxidizing flame is rich in what?

Answer 31

Oxygen

Question 32

What valve do you close first for oxyacetylene equipment?

Answer 32

The oxygen cylinder valve

Question 33

Where does a backfire occur?

Answer 33

Between the tip and the mixer

Question 34

Fluxes are what?

Answer 34

De-oxidation substance used for welding, brazing, and soldering

Question 35

The two types of joints used in brazing are:

Answer 35

The butt joint and the lap joint

Question 36

The overlap for a lap joint should be how many times the thickness of the thinner member?

Answer 36

Should be three times the thickness

Question 37

The theory of cutting with oxygen involves what?

Answer 37

Rapid oxidation of the metal

Question 38

What isn’t suitable for cutting with conventional oxyacetylene cutting equipment?

Answer 38

Non-ferrous metals. Copper, brass, bronze, aluminum

Question 39

What is the plasma torch designed to do?

Answer 39

To generate and focus the plasma cutting arc

Question 40

What has a very narrow heat affected zone?

Answer 40

Plasma arc cutting

Question 41

Abrasive cutting discs cut by:

Answer 41

Grinding material away

Question 42

The straight grinder is known as what tool?

Answer 42

Rotary tool

Question 43

Cutting discs should not be used for what?

Answer 43

Grinding things