Welding CDE – Arc || with 100% Error-free Solutions.
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Welding CDE – Arc
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Welding CDE – Arc
What term correctly identifies the reduction in voltage, caused by resistance, that occurs between the power supply and the load? correct answers Voltage drop
Which of the following lens shades is most effective at reducing the brilliancy of light and screening out the harmful infraded ultra- vi...
Welding CDE – Arc || with 100% Error-free Solutions.
What term correctly identifies the reduction in voltage, caused by resistance, that occurs between
the power supply and the load? correct answers Voltage drop
Which of the following lens shades is most effective at reducing the brilliancy of light and
screening out the harmful infraded ultra- violet rays produced during arc welding? correct
answers #12 shade lens
What is the name of the metal joining process where two pieces of metal are heated to a point of
melting and the melted metals flow together? correct answers Fusion Welding
What electrical device is a necessary component of an electrical welding machine and is used to
step up or step down the voltage and amperage as needed to perform welding operations? correct
answers Transformer
Which of the following safety concerns related to welding is more likely to occur gradually over
an extended period of time? correct answers Hearing loss caused by extended exposure to
elevated sound levels
Which of the following statements is correct with respect to safety glasses while welding?
correct answers Safety glasses should be worn continuously while working with or near metal
working activities
In electrical terminology, what is the meaning of the abbreviation AC? correct answers
Alternating Current
On a basic constant current arc welding machine, what does the primary/main adjustment
control? correct answers Amperage
On a typical shielded metal arc welding E7018 electrode, the 70 indicates what value for tensile
strength? correct answers 70,000 psi tensile strength
What welding agency or entity does the acronym AWS indentify? correct answers American
Welding Society
Ductility is the ability of metal to do what before it breaks? correct answers Elongate
What is the length of the most commonly used electrode for the process of shielded metal arc
welding? correct answers 14 inches
What is a common name for the shielded metal arc welding process? correct answers Stick
welding
Which of the following terms describes the appropriate power source for the gas metal arc
welding process? correct answers Constant voltage
,What type of power supply is used for the flux core arc welding process? correct answers
Constant voltage
On a direct current arc welding machine, what electrical component converts the incoming
alternating current into direct current for welding? correct answers A rectifier
What is the name of the cleansing agent used to prevent the formation of oxides, release trapped
gases, and slag and cleanse the metal chemically during the welding, brazing, and/or soldering
process? correct answers Flux
What is the proper name for the stick welding process? correct answers Shielded metal arc
welding (SMAW)
The National Electric Manufacturers Association (NEMA) has classified electric arc welders
primarily by duty cycle. What is the minimum duty cycle rating of a NEMA Class I machine?
correct answers 60%
What is the recommended eye protection shade number for a welding helmet lens used when
welding with 1/8 inch electrode? correct answers No. 10 lens shade
Which of the following shielded metal arc welding electrodes is designated as a low hydrogen
electrode? correct answers E7018
What duty cycle rating is required for a welding machine that will operate at its maximum rating
for six minutes continually during a ten minute period? correct answers 60%
Which of the following is another name for the Arc Welding process that uses flux-coated metal
welding rods? correct answers Shielded Metal Arc Welding (SMAW)
The arc from an Arc Welder has a temperature of about 9000 degrees. Which of the following
variables will not affect the welding temperature? correct answers size (length) of the electrode
Direct Current (DC) welders produce current that flows in only one direction in accordance with
how the welder is set according to polarity. What is one way that the polarity can be changed on
the welding machine? correct answers Manually reverse the welding cables
Which of the following items would not be considered an essential safety item in a welding
shop? correct answers duct tape
Which of the following is recommended to be worn under the welding helmet for safety
protection of the eyes when accomplishing other tasks besides welding? correct answers clear
safety glasses
Generally the direction of travel for a right-handed welder when using a stick welding machine
would be from: correct answers left to right slowly and evenly across the plate
, Which of the following statements about arc length when welding is false? correct answers an
arc that is too long sounds like bacon frying
The first two digits in the AWS electrode classification number designates the: correct answers
tensile Strength
When welding, one bead or layer of filler metal is called a pass. What is the name given to the
first and most important pass in the weld? correct answers root pass
Which of the following are accepted welding positions? correct answers flat, horizontal, vertical,
overhead
Which of the following would be classified as a destructive type weld test? correct answers
guided bend
In the Shielded Metal Arc Welding process, impurities are floated out of the molten puddle to
form a deposit known as ______ that protects the weld as it cools. correct answers slag
Stainless steel is welded with electrodes which are classified by the: correct answers American
Iron and Steel Institute (AISI)
You must know the kind of metal to be welded before you can select an electrode. Which of the
following is an example of a ferrous metal? correct answers steel
What term is used to describe the continuous running time for which a welder was designed?
correct answers duty cycle
Which of the following would cause the brightest arc when welding? correct answers long arc
length
_____ welding is the welding of two pieces of metal at one or more points in order to hold the
pieces together temporarily while welding them. correct answers Tack
Which of the following is a type of corner joint? correct answers full open
The wire through which electric current travels is called a: correct answers conductor
What are probable results if the welding current is too high or the arc length is too great? correct
answers A wide, splattered, irregular weld
Which of the following is not a cause of undercutting? correct answers amperage set too low
Amperage (current) setting depends upon electrode type, size, position, and metal thickness and
should be adjusted correct answers when no welding is being done
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