CWB Welding Inspector Level 2, Chapter 1 Exam 2024-2025 The % of total energy available to melt the electrode/filler metal and the workpiece is
referred to as _____
Arc efficiency
A welding process wherein an atomic bond between two surfaces is produce through
the application of pressure and heat
Diffusion welding The Length of space from the tip of the welding electrode to the nearest surface of the
weld pool .
Arc Length
In continuously fed wire welding processes, wire feed speed is directly proportional to
____ ____. An increase in WFS results in an increase in ____ ___ and penetration.
welding current
Arc voltage plus voltage fall in the rest of part is called _______ an electrical circuit. _____ flow from negative (cathode) to positive (anode) in a circuit.
Output voltage electrons
The alloy is a metallic substance and made of two or more chemical elements from Electrons have a ________ charge.
which at least one is a metal negative
Alloy
The electrical potential (Voltage) observed between the electrode and the workpiece.
A large quantity of _____ may come out with the flow of electric current in a circuit Arc Voltage
Heat
Electrons flowing through a conductor produce a _____ around the conductor
____ usually do not conduct the electricity unless enough amount of energy is provided Magnetic field
Gases
The deflection of an arc from its normal path due to magnetic forces
The area of ionized gas between powered electrodes is called a _____. Arc blow
Plasma
A welding arc is extremely hot, which can reach higher than ____ °C Flow of current in an electrical circuit where its direction, and thus direction of electron
30000 flow, is constantly reversing, often at a set frequency.
,AC The _____ cycle of an AC sine wave provides cleaning action to the welding arc
DCEP
The positive half and negative half of the AC together represent one complete cycle of
alternating current. This can be thought of as a ___
sine wave
The direct current, constant potential power sources used for gas metal arc welding
(GMAW) can be ____, ____/_____ or _____. The latter two types are more common since
the generator-type supplies respond slowly to changing arc conditions.
what type of laser is used most in consumer and commercial products, but is not used to
such a great degree in welding? generator, transformer/rectifiers, inverters
semiconductor
The mating surface of a member that is in contact with or in close proximity to another
member to which it is to be joined.
faying surface
SMAW
Most common electrode configuration for SMAW
DCEP
A process in which faying surfaces*, held together under force, are joined in one or
more spots by the heat generated due to the resistance to the flow of electric current
through the workpieces.
Resistance welding
Most common electrode configuration for GTAW
DCEN abbreviation of the resistance spot welding process
RSW
Resistance projection welding abbreviation
when using the gas metal arc process, ____ is the polarity of choice as it leads to greater RPW
heat generation at the workpiece (cathode) and therefore greater penetration.
DCEP Resistance seam welding abbreviation
RSEW
Flash welding abbreviation
, FW PAW
Upset welding abbreviation
UW ____Welding process used to join metals where the beam provides a concentrated heat
source, allowing for narrow, deep welds and high welding rates. The process is
frequently used in the aerospace, automotive, electronics, medical, and many other
Percussion welding abbreviation industries.
PEW Laser Beam Welding
Plasma arc welding abbreviation What are the 4 main types of lasers
PAW Gas, solid state, fiber, semiconductor
Modes of transfer in Plasma Arc Welding what are the 3 hybrid welding processes augmented with laser welding
melt-in mode, keyhole mode GTAW, PAW, GMAW
Current mode used with keyhole mode in PAW What contributes to forming the 'pinch force' that aids breaking filler droplets away from
the electrode?
Keyhole plasma
The magnetic field around the electrode
Current modes used with melt-in mode in PAW
micro-plasma, medium current plasma
What consumes the greatest percentage of voltage drop within a welding circuit
The welding process most like melt-in mode PAW because of its oval-shaped puddle
under the arc, anode drop and cathode drop zones
GTAW
What phase of matter can a welding arc be thought of as?
Plasma
This _____ process is used to weld carbon and alloy steels, stainless steels, aluminum
alloys, titanium, copper and nickel alloys, zirconium and tantalum. Some of the more What are the four regions or zones where voltage drop occurs in a welding arc
common applications include, but are not limited to, welding thin sheet, manufacturing
pipe and tubing using longitudinal and transverse welds and welding aeronautic fuel Electrode extension, cathode drop zone, arc column, anode drop zone
containment cells.
referred to as _____
Arc efficiency
A welding process wherein an atomic bond between two surfaces is produce through
the application of pressure and heat
Diffusion welding The Length of space from the tip of the welding electrode to the nearest surface of the
weld pool .
Arc Length
In continuously fed wire welding processes, wire feed speed is directly proportional to
____ ____. An increase in WFS results in an increase in ____ ___ and penetration.
welding current
Arc voltage plus voltage fall in the rest of part is called _______ an electrical circuit. _____ flow from negative (cathode) to positive (anode) in a circuit.
Output voltage electrons
The alloy is a metallic substance and made of two or more chemical elements from Electrons have a ________ charge.
which at least one is a metal negative
Alloy
The electrical potential (Voltage) observed between the electrode and the workpiece.
A large quantity of _____ may come out with the flow of electric current in a circuit Arc Voltage
Heat
Electrons flowing through a conductor produce a _____ around the conductor
____ usually do not conduct the electricity unless enough amount of energy is provided Magnetic field
Gases
The deflection of an arc from its normal path due to magnetic forces
The area of ionized gas between powered electrodes is called a _____. Arc blow
Plasma
A welding arc is extremely hot, which can reach higher than ____ °C Flow of current in an electrical circuit where its direction, and thus direction of electron
30000 flow, is constantly reversing, often at a set frequency.
,AC The _____ cycle of an AC sine wave provides cleaning action to the welding arc
DCEP
The positive half and negative half of the AC together represent one complete cycle of
alternating current. This can be thought of as a ___
sine wave
The direct current, constant potential power sources used for gas metal arc welding
(GMAW) can be ____, ____/_____ or _____. The latter two types are more common since
the generator-type supplies respond slowly to changing arc conditions.
what type of laser is used most in consumer and commercial products, but is not used to
such a great degree in welding? generator, transformer/rectifiers, inverters
semiconductor
The mating surface of a member that is in contact with or in close proximity to another
member to which it is to be joined.
faying surface
SMAW
Most common electrode configuration for SMAW
DCEP
A process in which faying surfaces*, held together under force, are joined in one or
more spots by the heat generated due to the resistance to the flow of electric current
through the workpieces.
Resistance welding
Most common electrode configuration for GTAW
DCEN abbreviation of the resistance spot welding process
RSW
Resistance projection welding abbreviation
when using the gas metal arc process, ____ is the polarity of choice as it leads to greater RPW
heat generation at the workpiece (cathode) and therefore greater penetration.
DCEP Resistance seam welding abbreviation
RSEW
Flash welding abbreviation
, FW PAW
Upset welding abbreviation
UW ____Welding process used to join metals where the beam provides a concentrated heat
source, allowing for narrow, deep welds and high welding rates. The process is
frequently used in the aerospace, automotive, electronics, medical, and many other
Percussion welding abbreviation industries.
PEW Laser Beam Welding
Plasma arc welding abbreviation What are the 4 main types of lasers
PAW Gas, solid state, fiber, semiconductor
Modes of transfer in Plasma Arc Welding what are the 3 hybrid welding processes augmented with laser welding
melt-in mode, keyhole mode GTAW, PAW, GMAW
Current mode used with keyhole mode in PAW What contributes to forming the 'pinch force' that aids breaking filler droplets away from
the electrode?
Keyhole plasma
The magnetic field around the electrode
Current modes used with melt-in mode in PAW
micro-plasma, medium current plasma
What consumes the greatest percentage of voltage drop within a welding circuit
The welding process most like melt-in mode PAW because of its oval-shaped puddle
under the arc, anode drop and cathode drop zones
GTAW
What phase of matter can a welding arc be thought of as?
Plasma
This _____ process is used to weld carbon and alloy steels, stainless steels, aluminum
alloys, titanium, copper and nickel alloys, zirconium and tantalum. Some of the more What are the four regions or zones where voltage drop occurs in a welding arc
common applications include, but are not limited to, welding thin sheet, manufacturing
pipe and tubing using longitudinal and transverse welds and welding aeronautic fuel Electrode extension, cathode drop zone, arc column, anode drop zone
containment cells.
