Chapter 14

Accoding to the AWS Classification system for low carbon steel electrodes, and using E7018 as the example. What does the ‘E’ signify?
a. Electric Arc welding
b. Electrode
c. Every use
d. Current and polarity

Accoding to the AWS Classification system for low carbon steel electrodes, and using E7018 as the example. What does the ‘70’ signify?
a. welding position
b. tensile strength
c. electrode coating, current and polarity
d. metal thickness

Accoding to the AWS Classification system for low carbon steel electrodes, and using E7018 as the example. What does the ‘1’ signify?
a. welding position
b. tensile strength
c. electrode coating, current and polarity
d. metal thickness

Accoding to the AWS Classification system for low carbon steel electrodes, and using E7018 as the example. What does the ‘8’ signify?
a. welding position
b. tensile strength
c. electrode coating, current and polarity
d. metal thickness

The submerged arc welding process (SAW) is a high deposition, high quality welding process widely used to join _____ sections in the flat, horizontal position.
a. thin
b. thick
c. butt
d. beveled

In submerged arc welding the electrode is
a. fed continuously from a coiled spool
b. covered with a cellulose coating
c. covered with iron powder
d. made of finely crushed mineral
e. known as flux

Flux is:
a. A substance to decrease the applied voltage
b. A substance to remove oxides and impurities????
c. A substance on the electrode to protect it from moisture and rusting
d. A substance applied to the inside of a pipe joint to aid alignment
e. A substance to shield the weld from the atmosphere

________ welding keeps the atmosphere from the weld bead by a blanket of granular flux
a. fusion
b. shielded metal arc
c. machine
d. submerged arc
e. manual

The ___________________ joins metal by the heat of an arc between a nonconsumable tungsten electrode and the work piece, with or without the addition of a filler metal.
a. Submerged Arc Welding process (SAW)
b. Gas Tungsten Arc Welding process (GTAW)
c. Gas Metal-Arc Welding process (GMAW)
d. Reverse Metal-Arc Welding process (RMCW)

GTAW is particularly suited to the welding of _________ metals.
a. similar
b. exotic
c. dissimilar
d. cast

The __________________ is an arc-welding process, which produces the fusion of metals by heating them with an arc between a continuous filler metal (consumable) electrode and the work.
a. Submerged Arc Welding process (SAW)
b. Gas Tungsten Arc Welding process (GTAW)
c. Gas Metal-Arc Welding process (GMAW)
d. Reverse Metal-Arc Welding process (RMCW)

_______________ is the only arc welding process capable of welding all commercial ferrous and non-ferrous alloys.
a. Submerged Arc Welding process (SAW)
b. Gas Tungsten Arc Welding process (GTAW)
c. Gas Metal-Arc Welding process (GMAW)
d. Reverse Metal-Arc Welding process (RMCW)

The arc and molten weld metal is protected, from the atmosphere, by a flow of _____ or reactive gas.
a. Air
b. Inert
c. Non-inert
d. Hydrogen

The GMAW process is well suited to the _____ passes, on pipe welding.
a. final
b. mid
c. root
d. under

On pipe, larger than 51 mm, the ends are normally ______ welded together.
a. lap
b. butt
c. electrode
d. fit

During the process of welding, ______ are set up in both the weld metal and in the base metal, adjacent to the weld.
a. stresses
b. cracks
c. inclusions
d. checks

One of the ways to minimize ________ in the welded joint is to preheat the parts to be welded.
a. cracks
b. stresses
c. inclusions
d. checks

Postweld heat treatment, often called ________ relieving, consists of uniformly heating the welded parts to a temperature sufficient to relieve most of the stresses created by the welding process.
a. cracks
b. stress
c. inclusions
d. checks

__________ is a melting away of the parent metal which can alter reduce the thickness of the welded joint.
a. Fusion
b. Undercut
c. Overlap
d. Underfill

Lack of _______, or more precisely, incomplete joint penetration, is a group of weld discontinuities where fusion did not occur between weld metal and the base metal or between overlapping weld beads.
a. Fusion
b. Undercut
c. Overlap
d. Underfill

_________ is an excess of deposit metal, which is not fused to the base metal.
a. Fusion
b. Undercut
c. Overlap
d. Underfill

____________ is insufficient weld deposit, resulting in a reduction in the thickness of the groove.
a. Fusion
b. Undercut
c. Overlap
d. Underfill

__________ is spherical or tube like defects, cavities, or voids caused by gases trapped inside the weld or gases that have evolved to the surface.
a. Porosity
b. Slag inclusions
c. Cracks
d. Checks

_________________ are solid non-metallic inclusions entrapped below the surface in the weld metal or more often, between deposited weld metal and the base metal.
a. Porosity
b. Slag inclusions
c. Cracks
d. Checks

Planar type defects, such as _______ and lack of fusion, are sharp and pointed in shape and create severe notching and high potential for failure.
a. Porosity
b. Slag inclusions
c. Cracks
d. Checks

To ensure the electrodes function as designed, they must be kept in baking ovens to remove any _________ content.
a. hydrogen
b. moisture
c. carbon
d. inert

A ______ is a non-destructive test method that shows defects in the interiors of the welds that would not be visible to the eye
a. dye penetrant test
b. tensile test
c. bending test
d. radiographic inspection
e. ultrasonic Inspection

_______ makes use of short wave length radiations such as x-rays and gamma rays to penetrate the weld.
a. ultrasonic inspection
b. radiographic inspection
c. tensile testing
d. dye penetrant testing
e. binding testing

___________ involves directing high-frequency sound waves into the metal to detect fine cracks and defects
a. dye penetrant testing
b. radiographic inspection
c. gamma ray inspection
d. tensile testing
e. ultrasonic inspection

Magnetic particle testing (MT) is an _________ technique for detecting flaws that are either surface, or subsurface.
a. nondestructive
b. destructive
c. radiographic
d. ultrasonic

The ________ must present a Pressure Welder’s Certificate of Competency, as proof of eligibility to take the performance qualification test.
a. Welder
b. Manufacturer
c. Owner
d. Operator

When a welder passes the required test, as set out in the ASME Code, he is issued with a:
a. journey man's welding ticket
b. power Engineering certificate
c. performance qualification card
d. pressure welder's certificate
e. manufacturer’s license