WorksheetsWLD-116/SMAW
Total questions: 67
Worksheet time: 34mins
The following qualities and skills are useful in preparation for a career in welding:
Attention to detail and manual dexterity
Fluency in multiple languages
Advanced computer programming skills
Expertise in financial accounting
In selecting the joining process, one consideration relates to the ____ , such as whether the parts are made out of a standard metal or an exotic alloy.
quality requirements
size of the parts to be joined
appearance of the finished product
materials to be joined
In selecting the joining process, one consideration relates to the ____ , such as whether the weldment is only needed to test an idea, or will be a permanent structure.
materials to be used
size of the parts to be joined
quality requirements
appearance of the finished product
Welder assemblers ____ .
demonstrates good management skills by planning jobs and assigning workers
position all the parts in their proper places and make them ready for the tack welders
has a high degree of skill and knowledge of small business management
operates machines or automatic equipment used to make welds
Welders’ helpers ____ .
operates machines or automatic equipment used to make welds
often helps the welder by making small welds to hold parts in place
clean slag from the welds, grind welds, and help the welder
design, specify, and oversee the construction of complex weldments
Welding operators ____.
clean slag from the welds, and help position weldments
operates machines or automatic equipment used to make welds
demonstrates good management skills by planning jobs and assigning workers
often helps the welder by making small welds to hold parts in place
Welding shop owners ____.
has a high degree of skill and knowledge of small business management
demonstrates good management skills by planning jobs and assigning workers
often helps the welder by making small welds to hold parts in place
operates machines or automatic equipment used to make welds
What process was used to join pieces of iron together and was introduced during the Industrial Revolution (1750-1850)?
Fusion welding
Forge welding or hammer welding
Resistance welding
Oxyacetylene welding
What was the sand used for in the direct casting process of metal forming?
It was used as an insulation to keep the metal from overheating.
It was melted into glass to form a mold for the hot metal to be cast.
It supported the base plate.
It was used to form the desired shape of the part being cast.
Which of the methods of applying welding metal only requires the welder to manipulate the welding gun?
Automated welding
Manual welding
Automatic welding
Semiautomatic welding
The symptom of acute exposure to high concentrations of cadmium fumes is ____.
loss of appetite
lung irritation
abdominal cramps
insomnia
The symptoms of lead poisoning include ____.
abdominal cramps and lung irritation
influenza symptoms
metallic taste, loss of appetite, nausea, abdominal cramps, and insomnia
lung irritation and kidney damage
To treat a third-degree burn ____.
covers the burned area with thick, sterile, non-fluffy dressings
pours iced water on the burn
applies ointments or antiseptic spray
removes all clothing stuck to the burn
Welding cable must be spliced ____ the electrode holder.
within 10 feet of
more than 10 feet away from
more than 20 feet away from
within 20 feet of
What are the two most common areas of a welder’s body that are burned by UV light?
Hands and arms
Ears and head
Neck and wrist
Face
What is the most severe degree of a burn?
Third degree
Second degree
First degree
Fourth degree
___ cutting uses a stiff, highly ionized, extremely hot column of gas to almost instantly vaporize the metal being cut.
Air carbon arc
Laser beam
Plasma arc
Oxyfuel gas
___ is a type of arc welding.
Flux metal arc welding
Plastic core arc welding
Gas tungsten arc welding
Flux tungsten arc welding
___ is extremely fast and economical because it can produce long welds rapidly that require very little postweld cleanup.
OAW
GMAW
SMAW
GTAW
___ is the most common type of fuel gas used for oxyfuel welding.
Acetylene
MAPP
Propane
Oxygen
___ must be able to interpret blueprints and welding procedures.
Welder assemblers
Tack welders
Welder’s helpers
Weld shop owners
____ welding can be used to weld metal ranging in thickness from thin-gauge sheet metal to heavy plate by making only a few changes in the welding setup.
Shielded metal arc
Flux cored arc
Gas metal arc
Oxyacetylene
A ____ is required to know all of the welding process and metallurgy as well as have good math, reading, communication, and design skills.
welding inspector
welder’s helper
welder operator
welding engineer
A ____ must be correctly applied so that it is strong enough to hold the assembly and still not interfere with the finished welding.
stick weld
rod weld
tack weld
forged weld
An advantage of ____ welding is that a variety of metal types and metal thicknesses can be joined with one machine.
gas metal arc
oxyacetylene
shielded metal arc
flux cored arc
During what time period did mankind begin to join metals?
World War I
Bronze and Iron Ages
The American Revolution
The Industrial Revolution
Even though ____ is slower and requires a higher skill level as compared to other manual welding processes, it is still in demand because it can be used to make extremely high-quality welds in applications where weld integrity is critical.
GMAW
OAW
GTAW
SMAW
____ are usually either hydraulic or flywheel operated.
Band saws
Shears
Power punches
Cut-off machines
____ fire extinguishers are used for combustible metals such as zinc and magnesium.
Type A
Type B
Type C
Type D
____ fire extinguishers are used for electrical fires.
Type A
Type B
Type C
Type D
____ is a gas that is produced by the ultraviolet light in the air in the vicinity of welding operations.
Carbon dioxide
Phosgene
Argon
Ozone
____ is formed when ultraviolet radiation decomposes chlorinated hydrocarbon.
Ozone
Phosgene
Carbon dioxide
Argon
__ light can cause temporary night blindness.
Spectral
Infrared
Visible
Ultraviolet
__ light is dangerous because the welder cannot feel the light while being exposed to it, and it may pass through clothing.
Ultraviolet
Infrared
Visible
Spectral
____ respirators are air-purifying respirators that use a blower to force the ambient air through air-purifying elements to the inlet covering.
Supplied-air
Air-purifying
Powered air-purifying
Atmosphere-supplying
Acetylene cylinders that have been lying on their sides must stand upright for at least ____ hours before they are used.
four
two
five
three
Burns ____.
have a high risk of infection because of the dead tissue
are among the least common injuries in a welding shop
are divided into four categories
are caused by heat and not light
General work clothing should ____.
be made of a synthetic fabric
have deep pockets
be loosely woven, and a light color
be tightly woven and a dark color
If a nut or bolt is too tight to loosen with a wrench, ____.
use a smaller wrench
cut the nut or bolt off
use a longer wrench
use a cheater bar
Light that bounces off of a wall or ceiling is referred to as__________.
reflected
refracted
full spectrum
radiated
The best material to use for special protective clothing is ____.
polyester
100% wool
100% cotton
leather
____ controls the maximum gap the electrons can jump to form the arc.
Voltage
Wattage
Amperage
Heat
____ controls the size of the arc.
Heat
Wattage
Amperage
Voltage
____ is a measurement of the amount of electrical energy or power in the arc.
Amperage
Heat
Voltage
Wattage
A 60% duty cycle means that the machine can be used a total of ____ minutes out of every ten minutes at the maximum rated current.
six
eight
ten
two
A transformer with more turns of wire in the primary winding than in the secondary winding is known as a ____.
high-voltage transformer
low-amperage transformer
welding transformer
step-down transformer
A work clamp ____.
reduces welding efficiency
must not clamp too tightly to the material
should be carefully touched occasionally to determine if it is hot
may have power losses that should be ignored
A(n) ____ produces AC, and a(n) ____ produces DC.
diode, alternator
generator, diode
alternator, generator
generator, alternator
Electrons flow through a conductor ____.
from negative to negative
from positive to negative
from positive to positive
from negative to positive
In a standard welding transformer, the size of the iron core is determined by ____.
the length of time it takes for the magnetic field to build up and collapse
the distance between the coils
the desired thickness of the weld bead
the speed of the rotor
In alternators the welding current is produced on the ____.
diode
stator
armature
brushes
Inverter welders may have transformers as light as ____________.
2.2 lb (1 kg)
35 lb (16 kg)
17 lb (7.7 kg)
7 lb (3 kg)
Portable welders often have _____ or ______ plug outlets.
12-volt DC, 24-volt DC
110-volt, 220-volt
12-volt AC, 24-volt AC
110-volt, 120-volt
Resistance to the flow of electrons produces ____.
heat
electricity
light
voltage
Temperature is the measurement of ________ energy in a material.
mechanical
voltage
thermal
electrical
The ____ machine allows the selection of different current settings by tapping into the secondary coil at a different turn value.
multiple-coil
inverter
transformer
movable-coil
The amount of heat produced by a welding arc is determined by the ____.
amperage
capacitance
voltage
wattage
The heat produced by a rectifier ____.
leads to a higher amperage in DC than AC
can be recycled in a heat sink to provide power to other machines
reduces the power efficiency of the welding machine
increases the power efficiency of the welding machine
The major classifications of welding machines are ____.
multiple coil, movable coil, movable core, and inverter
multiple core, inversion, transformer
multiple inversion, transformer core, and step-down
magnetic core, movable coil, and transformer
The shielded metal arc welding machine's voltage output ____ as its current ____.
decreases, decreases
increases, decreases
increases, increases
decreases, increases
The unit of measure of electrical flow is _____________.
watts
amps
volts
The unit of measure of electrical power is _____________.
watts
volts
amps
The unit of measure of electrical pressure is _____________.
watts
amps
volts
Welding cables made of aluminum wire must be ____ would be required for copper.
two sizes larger than
the same size as
one size larger than
one size smaller than
What is the name for the process used to increase the current if the arc gets too short?
All of the above
Dig
Arc Force Control
Arc Force
Which of the following is true of shielded metal arc welding?
The process is not suitable for cast iron, aluminum, stainless steel or nickel.
The machine and the electrodes are expensive.
There is a lot of equipment required, and it is difficult to move.
Metal as thin as 1/16 inch to several feet thick can be welded using the same machine.
Why is it important to keep portable welders properly tuned?
To produce smoother welding current
All of the above
So they run quieter
To reduce air pollution
