CWB Welding Inspection Level
II - Chapter 1 Welding
Processes and Equipment
(solved & updated)
An arc plasma consists of
a. atoms and gas molecules.
b. free electrons and positive ions.
c. Carbon atoms and hydrogen molecules.
d. light of a fixed wavelength - answer b. free electrons and positive ions.
Which of the following welding processes is the most commonly used?
a. Resistance Welding
b. Blazing
c. Solid State Welding
d. Arc Welding - answer d. Arc Welding
The most arc efficient welding process is the _______ process.
a. GTAW
b. SMAW
c. FCAW
d. SAW - answer d. SAW
Which two areas represent the largest voltage drop in a welding arc?
a. Electrode extension and Cathode drop zone
b. Electrode extension and Anode drop zone
c. Arc plasma and electrode extension
d. Cathode drop zone and Anode drop zone - answer d. Cathode drop zone and
Anode drop zone
,The pinch force that aids in droplet detachment during spray transfer is produced
by
a. a self—induced magnetic field
b. gravity
c. surface tension
d. the plasma jet - answer a. a self—induced magnetic field
Which of the following welding processes produces the least hydrogen weld metal
content?
a. SMAW
b. GTAW
c. SAW
d. FCAW - answer b. GTAW
The majority of the arc energy is transferred to the work when the GTAW process
is operated in what polarity.
a. AC
b. DCEP
c. DCEN
d. AC unbalanced - answer c. DCEN
Modern inverter GTAW power sources use all methods for arc starting, except for?
a. Scratch
b. High Frequency
c. Steel Wool
d. Electronic Touch - answer c. Steel Wool
The highest deposition rate in the SMAW process occurs in
a. DCEN
b. DCEP
c. AC
d. AC unbalanced - answer a. DCEN
, The arc force control in CC welding power sources is used to ___________ in the
SMAW process.
a. reduce the penetration of the weld when the arc length is decreased
b. increase the penetration of the weld when the arc length is decreased
c. reduce the penetration of the weld when the arc length is increased
d. increase the penetration of the weld when the arc length is increased - answer
b. increase the penetration of the weld when the arc length is decreased
The function of the ingredients within the electrode coating of SMAW electrodes
is to:
a. provide gas shielding, provide slag cover, scavenge impurities, stabilize the arc
and adding alloy elements
b. aid in the weld metal wetting the base metal
c. reduce arc blow
d. conduct a portion of the arc current - answer a. provide gas shielding, provide
slag cover, scavenge impurities, stabilize the arc and adding alloy elements
The electrodes represented by EXX15, EXX16, and EXX18 have _________as a major
ingredient in the coating.
a. limestone
b. cellulose
c. titania
d. none of the above - answer a. limestone
The GMAW, FCAW and MCAW processes have these features in common.
a. Constant current power source and constant speed wire feeder
b. Constant voltage power source and constant speed wire feeder
c. Constant current power source and variable speed wire feeder
d. Constant voltage power source and variable speed wire feeder - answer b.
Constant voltage power source and constant speed wire feeder
The welding current in the GMAW process is determined by which of the following
variables?
a. Wire feed speed
II - Chapter 1 Welding
Processes and Equipment
(solved & updated)
An arc plasma consists of
a. atoms and gas molecules.
b. free electrons and positive ions.
c. Carbon atoms and hydrogen molecules.
d. light of a fixed wavelength - answer b. free electrons and positive ions.
Which of the following welding processes is the most commonly used?
a. Resistance Welding
b. Blazing
c. Solid State Welding
d. Arc Welding - answer d. Arc Welding
The most arc efficient welding process is the _______ process.
a. GTAW
b. SMAW
c. FCAW
d. SAW - answer d. SAW
Which two areas represent the largest voltage drop in a welding arc?
a. Electrode extension and Cathode drop zone
b. Electrode extension and Anode drop zone
c. Arc plasma and electrode extension
d. Cathode drop zone and Anode drop zone - answer d. Cathode drop zone and
Anode drop zone
,The pinch force that aids in droplet detachment during spray transfer is produced
by
a. a self—induced magnetic field
b. gravity
c. surface tension
d. the plasma jet - answer a. a self—induced magnetic field
Which of the following welding processes produces the least hydrogen weld metal
content?
a. SMAW
b. GTAW
c. SAW
d. FCAW - answer b. GTAW
The majority of the arc energy is transferred to the work when the GTAW process
is operated in what polarity.
a. AC
b. DCEP
c. DCEN
d. AC unbalanced - answer c. DCEN
Modern inverter GTAW power sources use all methods for arc starting, except for?
a. Scratch
b. High Frequency
c. Steel Wool
d. Electronic Touch - answer c. Steel Wool
The highest deposition rate in the SMAW process occurs in
a. DCEN
b. DCEP
c. AC
d. AC unbalanced - answer a. DCEN
, The arc force control in CC welding power sources is used to ___________ in the
SMAW process.
a. reduce the penetration of the weld when the arc length is decreased
b. increase the penetration of the weld when the arc length is decreased
c. reduce the penetration of the weld when the arc length is increased
d. increase the penetration of the weld when the arc length is increased - answer
b. increase the penetration of the weld when the arc length is decreased
The function of the ingredients within the electrode coating of SMAW electrodes
is to:
a. provide gas shielding, provide slag cover, scavenge impurities, stabilize the arc
and adding alloy elements
b. aid in the weld metal wetting the base metal
c. reduce arc blow
d. conduct a portion of the arc current - answer a. provide gas shielding, provide
slag cover, scavenge impurities, stabilize the arc and adding alloy elements
The electrodes represented by EXX15, EXX16, and EXX18 have _________as a major
ingredient in the coating.
a. limestone
b. cellulose
c. titania
d. none of the above - answer a. limestone
The GMAW, FCAW and MCAW processes have these features in common.
a. Constant current power source and constant speed wire feeder
b. Constant voltage power source and constant speed wire feeder
c. Constant current power source and variable speed wire feeder
d. Constant voltage power source and variable speed wire feeder - answer b.
Constant voltage power source and constant speed wire feeder
The welding current in the GMAW process is determined by which of the following
variables?
a. Wire feed speed
