Welding

Question 1

Which metal when heated or welded can produce fume fever is the fumes are inhaled?

Answer 1

Zinc

Question 2

Fumes are:

Answer 2

Small, condensed particles of metal that have vapourized

Question 3

Which type of radiant energy can cause welding flash?

Answer 3

Ultraviolet light

Question 4

Permanent eye damage in the form of cataracts or retina damage may result from over expusiere to what harmful light ray?

Answer 4

Infrared

Question 5

What type of gloves are recommended for oxyfuel cutting?

Answer 5

Dry-tanned leather gauntlet style

Question 6

Which type of material offers the best protection against sparks & molten slag?

Answer 6

Leather

Question 7

What device breaks the current flow while still at a low level to protect people for electrical shock?

Answer 7

Ground fault circuit interrupter (GFCI)

Question 8

How long after hot work is completed shout the fire watch look for fires?

Answer 8

60 minutes

Question 9

What is the meaning of the acronym OHS?

Answer 9

Occupational health and safety

Question 10

What should you do immediately if you receive a major contact burn?

Answer 10

Cool the burned area by immersing in cool, still water

Question 11

Exposure to infrared light without proper eye protection can cause:

Answer 11

Retina damage

Question 12

Temporary blindness is caused by the eyes exposed to high levels of..

Answer 12

Visible light

Question 13

Permanent eye damage in the form of cataracts may result from over exposure to which harmful light ray?

Answer 13

Infrared

Question 14

When cutting or welding on metals plated with cadmium:

Answer 14

Appropriate respiratory protective equipment should be used

Question 15

When oxygen reacts with ultraviolet light from welding, what gas is produced?

Answer 15

Ozone

Question 16

The five basic types of joints are :

Answer 16

Butt, tee, lap, edge and corner

Question 17

A butt joint is a welded joint where the parts joined..

Answer 17

Lie in the same plane

Question 18

The four main types of welds are :

Answer 18

Groove, fillet, plug (or slot) and surfacing

Question 19

What joints would you find a fillet weld?

Answer 19

Tee, lap and corner

Question 20

What may be done to reinforce welds made on a lap joint?

Answer 20

Place plug or slot welds along the joint

Question 21

Edge joints are most often used on :

Answer 21

Sheet metal

Question 22

What is the primary factor in the selection of the joint type?

Answer 22

Strength and loading requirements

Question 23

Selecting a joint preparation that requires the least amount of filler metal would :

Answer 23

Minimize distortion and lower cost factors

Question 24

Term:
The resistant of a material to a force trying to pull it apart

Answer 24

Tensile strength

Question 25

Term: The ability of a metal to be cold worked without a great deal of resistance

Answer 25

Malleability

Question 26

Term: The ability of a metal to resist indentation or penetration

Answer 26

Hardness

Question 27

Ferrous metal has a high content of:

Answer 27

Iron

Question 28

If given two identical pieces or zinc die cast and aluminum, what would be the simplest way to identify them?

Answer 28

By their weight

Question 29

How is cast iron distinguished from low carbon steel in a spark test?

Answer 29

The sparks given off by cast iron are short with red bursts near the grinder

Question 30

Which gas is produced using the liquefaction process?

Answer 30

Oxygen

Question 31

What should be done before the cylinder valve protective caps are removed?

Answer 31

Cylinders should be secured

Question 32

To protect the regulator gauges from being damaged, you must..

Answer 32

Release the adjusting screw before you open the cylinder valve