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CWB Welding Inspector Level 2, Chapter 1 Exam
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CWB Welding Inspector Level 2, Chapter 1 Exam 2024-2025A welding process wherein an atomic bond between two surfaces is produce through
the application of pressure and heat
Diffusion welding
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.
Output voltage
The alloy is a metallic substance and made of two or more chemical elements from
which at least one is a metal
Alloy
A large quantity of _____ may come out with the flow of electric current in a circuit
Heat
____ usually do not conduct the electricity unless enough amount of energy is provided
Gases
The area of ionized gas between powered electrodes is called a _____.
Plasma
A welding arc is extremely hot, which can reach higher than ____ °C
30000
,The % of total energy available to melt the electrode/filler metal and the workpiece is
referred to as _____
Arc efficiency
The Length of space from the tip of the welding electrode to the nearest surface of the
weld pool .
Arc Length
_____ flow from negative (cathode) to positive (anode) in a circuit.
electrons
Electrons have a ________ charge.
negative
The electrical potential (Voltage) observed between the electrode and the workpiece.
Arc Voltage
Electrons flowing through a conductor produce a _____ around the conductor
Magnetic field
The deflection of an arc from its normal path due to magnetic forces
Arc blow
Flow of current in an electrical circuit where its direction, and thus direction of electron
flow, is constantly reversing, often at a set frequency.
,AC
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
what type of laser is used most in consumer and commercial products, but is not used to
such a great degree in welding?
semiconductor
SMAW
Most common electrode configuration for SMAW
DCEP
Most common electrode configuration for GTAW
DCEN
when using the gas metal arc process, ____ is the polarity of choice as it leads to greater
heat generation at the workpiece (cathode) and therefore greater penetration.
DCEP
, The _____ cycle of an AC sine wave provides cleaning action to the welding arc
DCEP
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.
generator, transformer/rectifiers, inverters
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
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
abbreviation of the resistance spot welding process
RSW
Resistance projection welding abbreviation
RPW
Resistance seam welding abbreviation
RSEW
Flash welding abbreviation
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