welding chapter 2
Any system of ventilation should draw the fumes or smoke away before it rises past the level of the welder's ____. a-shin b-hip c-chest d-face
d
Burns ____. a-are caused by heat and not light b-are among the least common injuries in a welding shop c-are divided into four categories d-have a high risk of infection because of the dead tissue
d
The best material to use for special protective clothing is ____. a-polyester b-100% cotton c-100% wool d-leather
d
The symptoms of lead poisoning include ____. a-influenza symptoms b-lung irritation and kidney damage c-abdominal cramps and lung irritation d-metallic taste, loss of appetite, nausea, abdominal cramps, and insomnia
d
_____________________ respirators are atmosphere-supplying respirators that admit breathing air to the facepiece only when a negative pressure is created inside the face piece by inhalation.
demand
A(n) ____________________ will prevent an accidental separation of a tool cord from an extension cord during operation.
knot or cord connector
Most paints containing ____________________ have been removed from the market; however, some industries, such as marine or ship applications, still use them.
lead
Green hoses are to be used only for _________
oxygen
The abbreviation PPE stands for __________________________________.
personal protection equipment
Electrical ____________________ is lowered in the presence of water or moisture, so welders must take special precautions when working under damp or wet conditions.
resistance
When a grinding stone wears down, keep the tool rest adjusted to within ____________________ of an inch.
1/16
Highly combustible materials should be ___________
35 feet
The base of a ladder should be set out a distance equal to ____ the height to the point of support. a-one-fourth of b-half of c-one and a half times d-twice
a
The symptoms of exposure to zinc oxide fumes include ____. a-influenza symptoms b-lung irritation and kidney damage c-abdominal cramps and lung irritation d-metallic taste, loss of appetite, nausea, abdominal cramps, and insomnia
a
____ fire extinguishers are used for combustible solids a-Type A b-Type B c-Type C d-Type D
a
____ light is dangerous because the welder cannot feel the light while being exposed to it, and it may pass through clothing. a-Ultraviolet b-Infrared c-Visible d-Spectral
a
Acetylene is absorbed in __________
acetone
General work clothing must stop ultraviolet light and should be made of ________. a-100% nylon b-100% cotton c-Rayon cotton blend d-Nylon rayon blend
b
If a nut or bolt is too tight to loosen with a wrench, ____. a-use a cheater bar b-use a longer wrench c-use a smaller wrench d-cut the nut or bolt off
b
Light that bounces off of a wall or ceiling is referred to as_________. a-Refracted b-Reflected c-Radiated light d-Full spectrum
b
Stored oxygen and fuel gas cylinders ____. a-can be stored separately or together b-must be separated by 20 feet c-must be separated by a 20 ft. high wall d-must be separated by 5 feet
b
The symptom of acute exposure to high concentrations of cadmium fumes is ____. a-loss of appetite b-lung irritation c-abdominal cramps d-insomnia
b
Welding cable must be spliced ____ the electrode holder. a-within 10 feet of b-more than 10 feet away from c-within 20 feet of d-more than 20 feet away from
b
It is not safe to carry _________________ or _____________ in any pocket while welding because they can catch fire or explode.
butane lighters or matches
A ____ is the symbol for a Type C fire extinguisher a-green triangle b-red square c-blue circle d-yellow star
c
Acetylene cylinders that have been lying on their sides must stand upright for at least ____ hours before they are used. a-two b-three c-four d-five
c
General work clothing should ____. a-be made of a synthetic fabric b-be loosely woven, and a light color c-be tightly woven and a dark color d-have deep pockets
c
To treat a third degree burn ____. a- apply ointments or antiseptic spray b- remove all clothing stuck to the burn c- cover the burned area with thick, sterile, non-fluffy dressings d- pour iced water on the burn
c
What are the two most common areas of a welder's body that are burned by light? a-Face b-Hands and arms c-Neck and wrist d-Ears and head
c
____ light can cause temporary night blindness a-Ultraviolet b-Infrared c-Visible d-Spectral
c
