CWB 2 All Module Exams Questions & Answers
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Terms in this set (88)
A Plasma is: A) A gas made up of positive ions and free
electrons
A) A gas made up of
positive ions and free
electrons
B) A liquid used to
reduce adherence of
spatter
C) The main component
in an inverter power
source
D) Always present in an
electrical circuit
To increase melting rate C) DCEN
(burn-off rate) in the
shielded metal arc
welding (SMAW) process,
which polarity should be
used?
A) DCEP
B) ACEP
C) DCEN
D) ACEP
,Which type of welding A) Constant Current
power source is used for
the SMAW process?
A) Constant Current
B) Constant Voltage
C) Pulsed Current
D) Pulsed Voltage
The purpose of a C) Nearly constant current regardless of voltage
drooping welding power fluctuations
source is to produce:
A) Constant voltage
regardless of the current
demand
B) Constant arc length
regardless of current
C) Nearly constant
current regardless of
voltage fluctuations
B) Low open circuit
voltage
,A self-regulating welding D) Constant voltage power source with a constant
arc is produced by a: speed wire feed system
A) Constant current
power source with a
constant speed wire feed
system
B) Constant voltage
power source with a
voltage sensing wire feed
system
C) Constant current
power source
D) Constant voltage
power source with a
constant speed wire feed
system
Short circuit current is B) Static characteristic of the power source
determined by the:
A) Voltage in the circuit
B) Static characteristic of
the power source
C) Position of welding
D) Skill of the welder
A Transformer is a device C) Changes the value of an AC voltage but does not
that: change the frequency
A) Transforms AC to DC
B) Works only to change
a DC voltage
C) Changes the value of
an AC voltage but does
not change the
frequency
D) Is made from a
semiconductor
, A Rectifier is a device that D) AC current to DC current
converts:
A) DC current to AC
current
B) AC Current to a high
value DC current
C) DC current to a high
value DC current
D) AC current to DC
current
Microprocessor controls D) All of the above
are used in the more
modern welding power
sources to:
A) Provide more
sophisticated levels of
control for the welding
system
B) Allow welding
variables to be stored for
use later
C) Provide feedback
control
D) All of the above
Latest Update
Save
Terms in this set (88)
A Plasma is: A) A gas made up of positive ions and free
electrons
A) A gas made up of
positive ions and free
electrons
B) A liquid used to
reduce adherence of
spatter
C) The main component
in an inverter power
source
D) Always present in an
electrical circuit
To increase melting rate C) DCEN
(burn-off rate) in the
shielded metal arc
welding (SMAW) process,
which polarity should be
used?
A) DCEP
B) ACEP
C) DCEN
D) ACEP
,Which type of welding A) Constant Current
power source is used for
the SMAW process?
A) Constant Current
B) Constant Voltage
C) Pulsed Current
D) Pulsed Voltage
The purpose of a C) Nearly constant current regardless of voltage
drooping welding power fluctuations
source is to produce:
A) Constant voltage
regardless of the current
demand
B) Constant arc length
regardless of current
C) Nearly constant
current regardless of
voltage fluctuations
B) Low open circuit
voltage
,A self-regulating welding D) Constant voltage power source with a constant
arc is produced by a: speed wire feed system
A) Constant current
power source with a
constant speed wire feed
system
B) Constant voltage
power source with a
voltage sensing wire feed
system
C) Constant current
power source
D) Constant voltage
power source with a
constant speed wire feed
system
Short circuit current is B) Static characteristic of the power source
determined by the:
A) Voltage in the circuit
B) Static characteristic of
the power source
C) Position of welding
D) Skill of the welder
A Transformer is a device C) Changes the value of an AC voltage but does not
that: change the frequency
A) Transforms AC to DC
B) Works only to change
a DC voltage
C) Changes the value of
an AC voltage but does
not change the
frequency
D) Is made from a
semiconductor
, A Rectifier is a device that D) AC current to DC current
converts:
A) DC current to AC
current
B) AC Current to a high
value DC current
C) DC current to a high
value DC current
D) AC current to DC
current
Microprocessor controls D) All of the above
are used in the more
modern welding power
sources to:
A) Provide more
sophisticated levels of
control for the welding
system
B) Allow welding
variables to be stored for
use later
C) Provide feedback
control
D) All of the above
