Test
Welding CDE
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Preguntas del test (94)
1If the electrode freezes to the work:
a. Increase the amperage
b. Change the ground terminal.
c. Use a chipping hammer to knock the electrode free.
d. Turn the welding machine off immediately.- AA
- BB
- CC
- DD
2The proper length of arc may be judged by:
a. The sound of the arc.
b. The appearance of the arc.
c. The appearance of the weld.
d. All of the above.- AA
- BB
- CC
- DD
3If the electrode is moved too fast when arc welding:
a. A wide bead will result
b. Not enough metal will be deposited.
c. Excessive weld metal will be used
d. The bead will be too high.- AA
- BB
- CC
- DD
4Which of the following is not a recognized welding position?
a. Diagonal
b. Overhead
c. Vertical
d. Horizontal- AA
- BB
- CC
- DD
5Flux is a chemical compound used to prevent the:
a. Metal from becoming overheated.
b. Welding rod from freezing to the metal.
c. Formation of carbon on the metal.
d. Formation of an oxide on the metal.- AA
- BB
- CC
- DD
6Straight polarity is when:
a. Work is positive and the electrode is negative.
b. Both the work and the electrode are positive.
c. The work is negative and the electrode is positive.
d. Both the work and the electrode are negative.- AA
- BB
- CC
- DD
7A second pass should never be done if:
a. The first was a poor weld.
b. The joint was ground.
c. The slag from the first pass has been removed.
d. The slag from the first pass has not been removed.- AA
- BB
- CC
- DD
8The tensile strength of an E-7018 electrode is _______ pounds psi.
a. 3,500
b. 7,000
c. 70,000
d. 701,000- AA
- BB
- CC
- DD
9Porosity describes the condition of:
a. Non-fused nonmetallic substances in a weld.
b. Gas pockets and voids in the metal.
c. The weld at the place the heat is supplied.
d. A depression in the face of the weld.- AA
- BB
- CC
- DD
10Mild steel is considered to have:
a. No carbon content
b. Low carbon content
c. Medium carbon content.
d. High carbon content.- AA
- BB
- CC
- DD
11.The duty cycle of an arc welder refers to the:
a. Electrical requirements of the machine.
b. UL rating of the amperage switch
c. Continuous operating time in a ten minute period.
d. Output capacity of the machine.- AA
- BB
- CC
- DD
12Which element in steel is most undesirable for welding?
a. Carbon
b. Sulfur
c. Manganese
d. Aluminum- AA
- BB
- CC
- DD
13Which of the following is considered a fast freeze, deep penetrating, all
purpose electrode?
a. E-6011
b. E-6013
c. E-7014
d. E-7018- AA
- BB
- CC
- DD
14A T-fillet weld is affected most by _______ distortion.
a. Vertical
b. Horizontal
c. Angular
d. Diagonal- AA
- BB
- CC
- DD
15.What element is added more than others to iron in the manufacturing of
steel?
a. Sulfur
b. Magnesium
c. Molybdenum
d. Carbon- AA
- BB
- CC
- DD
16What shade of lens is used in arc welding?
a. Five
b. Eight
c. Ten
d. Twelve- AA
- BB
- CC
- DD
17Which two welds are known as “fillet” welds?
a. Butt and T-weld
b. T-weld and lap weld
c. Lap and butt weld
d. Corner and butt weld- AA
- BB
- CC
- DD
18What is the first bead made when welding two pieces of metal together
called?
a. Root pass
b. Cover pass
c. Surface pass
d. Finishing pass- Aa
- Bb
- Cc
- Dd
19An electrical current that flows in one direction (+) for a half cycle and then
in the other direction (-) for a half cycle is:
a. Alternating current (AC)
b. Direct current (DC)- Aa
- Bb
20For most arc welding jobs, the length of the arc should be:
a. ¼ inch
b. Equal to the rod length
c. Equal to the width of the base metal
d. Equal to the rod width.- Aa
- Bb
- Cc
- Dd
21.What is the purpose of the coating on an electrode?
a. Protect the wire core.
b. Prevent impurities from entering the weld.
c. Prevent slag from entering the weld
d. Make the electrode look pretty.- Aa
- Bb
- Cc
- Dd
22What is the work angle?
a. The angle between the electrode and the base metal when
viewed from the end plane.
b. The angle between the electrode and the vertical plane when
viewed from the side.
c. The position of the base metal being welded.
d. The angle between the base metal and the welding table.- Aa
- Bb
- Cc
- Dd
23When welding pieces that are of unequal thickness:
a. Maintain a short arc.
b. Use a long arc
c. Increase the speed of travel
d. Point the electrode towards the thicker piece.- Aa
- Bb
- Cc
- Dd
24What does the term “weld metal” refer to when arc welding?
a. The welded metal plate or structure.
b. The fused portion of base metal with filler rod.
c. The metal which the weld is being made on.
d. The process of fusing the filler rod with the base metal.- Aa
- Bb
- Cc
- Dd
25An E-7014 electrode can be used in:
a. The flat position only
b. Flat and vertical positions only
c. All positions.- Aa
- Bb
- Cc
26When welding vertical up, you should have:
a. A short arc
b. A long arc
c. The amperage set higher than normal
d. None of the above answers are correct.- Aa
- Bb
- Cc
- Dd
27When selecting an electrode for a welding job it is best to:
a. Choose the most expensive rods available.
b. Choose a rod that is made of metal that is much lighter than the
metal to be welded.
c. Choose a rod that is made of metal which is as similar to the
metal as possible.
d. Chose a rod that is made of metal which is much heavier than the
metal to be welded.- Aa
- Bb
- Cc
- Dd
28Ductility refers to:
a. The ability of a metal to be hammered or rolled.
b. The ability of a metal to be stretched.
c. The ability of the metal to conduct electricity.
d. The corrosion resistance of the metal.- Aa
- Bb
- Cc
- Dd
29Malleability refers to:
a. The ability of a metal to be hammered or rolled.
b. The ability of a metal to withstand a great amount of pressure.
c. The ability of a metal to withstand impact
d. The ability of a metal to be stretched.- Aa
- Bb
- Cc
- Dd
30The heat energy across an arc is produced by the:
a. Volts across the arc.
b. Resistance to current flow across the arc.
c. The amperage setting on the power source.
d. Electrode being used.- Aa
- Bb
- Cc
- Dd
31The slag which remains on top of the weld will _______ the speed that the
weld cools.
a. Slow
b. Increase- Aa
- Bb
32A _______ is any material which allows electricity to flow through it.
a. Conductor
b. Carrier
c. Volt
d. Watt- Aa
- Bb
- Cc
- Dd
33The two methods of striking an arc are:
a. Scratching and itching
b. Digging and scratching
c. Rubbing and scratching
d. Scratching and tapping.- Aa
- Bb
- Cc
- Dd
34Electrodes are classified by the
a. American Welders United
b. American Society for Welders
c. American Welders Union
d. American Welding Society- Aa
- Bb
- Cc
- Dd
35What kind of hammer should be used to remove slag?
a. Ball peen hammer
b. Claw hammer
c. Chipping hammer
d. Sledge hammer- Aa
- Bb
- Cc
- Dd
36Beveling is often used on very _______ metals.
a. Thick
b. Thin- Aa
- Bb
37Arc blow is caused by:
a. Electrical forces
b. Magnetic forces
c. Metallic forces
d. Magical forces- Aa
- Bb
- Cc
- Dd
38To stop arc blow from occurring you should:
a. Switch to a different electrode.
b. Turn off the machine, remove the ground clamp momentarily
then clamp it back on.
c. Use a different pair of welding gloves.
d. Have the arc welding machine repaired as soon as possible.- Aa
- Bb
- Cc
- Dd
39What is the correct arc length when welding in the flat position?
a. The width of the uncoated end of the electrode.
b. The width of the coated end of the electrode.
c. The length of the electrode.
d. The width of the base metal.- Aa
- Bb
- Cc
- Dd
40A chill plate is used to:
a. Keep beverages cool.
b. Support the metal being welded.
c. Absorb excessive heat from the welding process
d. Protect the welder from excessive spatter.- Aa
- Bb
- Cc
- Dd
41The output of a welding machine is relatively:
a. Low voltage and high amperage
b. High voltage and low amperage
c. High voltage and high amperage
d. Low voltage and low amperage.- Aa
- Bb
- Cc
- Dd
42Placing a small weld at each end of a joint is called:
a. Bead welding
b. Fillet welding
c. Tack welding
d. Groove welding- Aa
- Bb
- Cc
- Dd
43Eye hazards found in welding operations include:
a. Flying particles
b. Radiation
c. Smoke and fumes
d. All of the above- Aa
- Bb
- Cc
- Dd
44Protective equipment not suitable for eye protection from welding radiation
includes:
a. Welding helmets with filter plates
b. Clear safety goggles
c. Safety goggles with filter plates
d. Protective screens- Aa
- Bb
- Cc
- Dd
45Which of the following gases can be used as shielding gases for GMAW?
a. Carbon dioxide
b. Argon-oxygen
c. Argon
d. All of the above- Aa
- Bb
- Cc
- Dd
46In a completed weld, the term for the junction between the weld face and
the base metal is:
a. Root
b. Toe
c. Leg
d. Weld edge- Aa
- Bb
- Cc
- Dd
47Endurance limit is an expression used for what type of testing?
a. Fatigue
b. Hardness
c. Soundness
d. Tension- Aa
- Bb
- Cc
- Dd
48The ability of a metal to absorb energy is called:
a. Strength
b. Ductility
c. Hardness
d. Toughness- Aa
- Bb
- Cc
- Dd
49Which alloying element is generally considered to have the most
pronounced effect on the properties and performance of carbon steel?
a. Aluminum
b. Carbon
c. Manganese
d. Chromium- Aa
- Bb
- Cc
- Dd
50Which alloying element is commonly added to steel to improve its
corrosion resistance?
a. Carbon
b. Aluminum
c. Silicon
d. Chromium- Aa
- Bb
- Cc
- Dd
51Hydrogen in the molten weld metal can cause:
a. Undercut
b. Overlap
c. Porosity
d. None of the above- Aa
- Bb
- Cc
- Dd
52The point at which a metal’s behavior changes from elastic to plastic
(onset of permanent deformation) is referred to as:
a. Yield strength
b. Ultimate tensile strength
c. Modulus of elasticity
d. Young’s modulus- Aa
- Bb
- Cc
- Dd
53The family of hardness tests that uses both a minor and major load is
called:
a. Brinnell
b. Vickers
c. Rockwell
d. Knoop- Aa
- Bb
- Cc
- Dd
5454.Stainless steels are defined as having at least what percent chromium?
a. 7%
b. 12%
c. 15%
d. 20%- Aa
- Bb
- Cc
- Dd
55The process where carbon is added to the surface of a steel to harden it
is:
a. Decarburization
b. Pack carburizing
c. Precipitation hardening
d. Quenching- Aa
- Bb
- Cc
- Dd
56Which of the following is a function of the flux coating of a SMAW
electrode?
a. Insulating
b. Alloying
c. Shielding
d. All of the above- Aa
- Bb
- Cc
- Dd
57What is the lead angle?
a. The angle between the electrode and the base metal when viewed
from the end plane.
b. The angle between the electrode and the vertical plane when
viewed from the side.
c. The angle between the base metal and the welding table.
d. The angle between the ground clamp and the base metal in relation
to the electrode.- Aa
- Bb
- Cc
- Dd
58When undercutting is a problem while arc welding, which adjustment
would most likely correct the problem?
a. Lengthen the arc
b. Reduce the current
c. Use longer electrodes
d. Switch to a higher amperage- Aa
- Bb
- Cc
- Dd
59What will be the result if you are using too low of an amperage when arc
welding?
a. The joint will be well fused
b. Undercutting will occur
c. The penetration of the base metal will be excessive.
d. The bead will be excessive.- Aa
- Bb
- Cc
- Dd
60An example of a metal that is “brittle” is:
a. aluminum
b. cast iron
c. mild steel
d. copper- Aa
- Bb
- Cc
- Dd
61An AC welding machine is powered by high voltage and should only be
serviced by a:
a. Mechanic
b. Welder
c. Supervisor
d. Qualified electrician- Aa
- Bb
- Cc
- Dd
62Arc welding can be performed in almost any position, but welding is most
easily done if the weld is in the _______position.
a. Overhead
b. Vertical
c. Flat
d. Horizontal- Aa
- Bb
- Cc
- Dd
63A _______ is also known as a fillet weld.
a. T-weld
b. Butt weld
c. Corner
d. None of the above are correct- Aa
- Bb
- Cc
- Dd
64When making a T-weld the arc should be directed more toward the bottom
plate to prevent:
a. Penetration
b. Undercutting on the top piece
c. Distortion
d. Slag inclusions- Aa
- Bb
- Cc
- Dd
65What does the abbreviation GMAW stand for?
a. General Machining And Welding
b. Gas Metal Arc Welding
c. Gas Motion Arc Welding
d. General Metal Arc Welding- Aa
- Bb
- Cc
- Dd
66The UL symbol means:
a. Unlimited guarantee
b. Underwriters Laboratory
c. Underwater limited
d. Unlimited liability- Aa
- Bb
- Cc
- Dd
67.Porosity in a weld might be caused by _______.
a. Rust on the metal
b. Welding too slow
c. Too short of an arc
d. Both B and C- Aa
- Bb
- Cc
- Dd
68When arc welding, injury to the eyes can result from:
a. Chipping without eye protection
b. Viewing welding without a helmet or shield
c. Welding with less than a number 10 lens
d. All of the above- Aa
- Bb
- Cc
- Dd
69The appearance and strength of a bead are influenced by the:
a. Amperage setting of the welding machine.
b. Angle that the electrode is held.
c. Travel speed when making the weld.
d. All of the above- Aa
- Bb
- Cc
- Dd
70When welding with a direct current machine straight polarity, the electrode
holder would be:
a. Positive
b. Negative
c. The current from both directions
d. The current flows from the electrode holder all the time- Aa
- Bb
- Cc
- Dd
71The output of an arc welding machine is commonly expressed in terms of:
a. Voltage
b. Hertz
c. Wattage
d. Amperage- Aa
- Bb
- Cc
- Dd
72AC welding machines house transformers to reduce input _______ and
increase output _______ for safe and effective welding.
a. Amperage-wattage
b. Voltage-amperage
c. Amperage-voltage
d. Voltage-wattage- Aa
- Bb
- Cc
- Dd
73The AC/ DC welding machine is essentially an AC welder with an
electronic device to convert AC to DC power. This electronic device is
called a(n):
a. Amplifier
b. Justifier
c. Rectifier
d. Generator- Aa
- Bb
- Cc
- Dd
74What are probable results if the welding current is too high or the arc
length is too great?
a. A narrow, deposit will pile up, irregular shape.
b. The electrode melts too fast, molten puddle too large and irregular.
c. Melts off the electrode in large globules, wobbles from sided to side
as the arc weavers.
d. A wide, splattered, irregular weld.- Aa
- Bb
- Cc
- Dd
75Which of the following is NOT a cause of undercutting?
a. Amperage set too low
b. Amperage set too high
c. Arc too long
d. Electrode held at an incorrect angle- Aa
- Bb
- Cc
- Dd
76Which of the following characteristics is not important in determining the
type of welding electrode to select?
a. The kind of metal being used
b. The thickness of the metal
c. The welding position
d. The weight of the metal- Aa
- Bb
- Cc
- Dd
77Which type of SMAW welding machine provides from both AC and DC
current for welding?
a. Transformer only
b. Generator only
c. Transformer/rectifier
d. Plasma arc- Aa
- Bb
- Cc
- Dd
78Why is a change in polarity useful in electric arc welding?
a. Reduces splatter
b. Reduces slag deposits
c. Controls heat and depth of penetration
d. Reduces ultraviolet and infrared light rays.- Aa
- Bb
- Cc
- Dd
79The last digit in the electrode number designates the _______.
a. Tensile strength
b. Welding position
c. Types of flux coating
d. Special characteristics of the electrode- Aa
- Bb
- Cc
- Dd
80In the GMAW welding process, the “consumable” electrode is in the form
of a:
a. 12” electrode
b. 36” electrode
c. Continuous wire
d. Tungsten electrode- Aa
- Bb
- Cc
- Dd
81Which of the following is recommended to be worn under the welding
helmet for safety protection of the eyes when accomplishing other tasks
besides welding?
a. Tinted contact lenses
b. Shade five safety goggles
c. Shade ten safety glasses
d. Clear safety glasses- Aa
- Bb
- Cc
- Dd
82The first two digits in the AWS electrode classification number
designates the:
a. Welding position
b. Tensile strength
c. Type of flux coating
d. Special characteristics of the electrode- Aa
- Bb
- Cc
- Dd
83Which of the following would be classified as a destructive type weld test?
a. Guided bend
b. Ultrasonic
c. Visual inspection
d. Eddy current- Aa
- Bb
- Cc
- Dd
84In 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.
a. Slag
b. Flux
c. Dross
d. Flack- Aa
- Bb
- Cc
- Dd
85You 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?
a. Copper
b. Aluminum
c. Steel
d. Porcelain- Aa
- Bb
- Cc
- Dd
86What term is used to describe the continuous running time for which a
welding machine was designed?
a. Duty rating
b. Running specification
c. Duty cycle
d. Ambient cycle- Aa
- Bb
- Cc
- Dd
87What is meant by the term “ductility” as it applies to metal?
a. The ease with which a metal will crack or bend.
b. The ability of a metal to be permanently twisted or bent
without breaking.
c. The ability of a metal to resist penetration
d. The metal’s ability to resist deformation.- Aa
- Bb
- Cc
- Dd
88The property of a metal that allows it to withstand forces, sudden shock or
bends without fracturing.
a. Brittleness
b. Ductility
c. Toughness
d. Strength- Aa
- Bb
- Cc
- Dd
89Tensile strength refers to:
a. How well a metal can withstand forces acting to cut it apart
b. The property of a metal to resist being crushed.
c. The ability of a metal to resist being pulled apart.
d. The ability of a metal to withstand a twisting force- Aa
- Bb
- Cc
- Dd
90The ability of a metal to resist being twisted apart is called its.
a. Tensile strength
b. Compressive strength
c. Shear strength
d. Torsional strength- Aa
- Bb
- Cc
- Dd
91The ability of a metal to resist fracture under a sudden load is called its:
a. Elastic limit
b. Impact strength
c. Torsional strength
d. Tensile strength- Aa
- Bb
- Cc
- Dd
92What does to term “quenching” refer to in welding?
a. Heating metal to its melting point.
b. Rapidly cooling a metal.
c. Galvanizing a metal.
d. Adding another metal to create an alloy.- Aa
- Bb
- Cc
- Dd
93Which of the following metals has a carbon content between 2% and 4%?
a. Iron
b. Aluminum
c. Mild steel
d. Cast iron- Aa
- Bb
- Cc
- Dd
94What is an alloy metal?
a. A pure metal comprised of only one element.
b. A metal with one or more elements added to it.
c. A type of metal that has no commercial value.
d. None of the above- Aa
- Bb
- Cc
- Dd
Información
- Descripción
- Test sobre Welding CDE, creado por Tyler Dingman el 18/12/2018.
- Autor
- Tyler Dingman
- Idioma
- English
- Visitas
- 3
- Etiquetas
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