WorksheetsSMAW I SENSE
Total questions: 26
Worksheet time: 13mins
Of the following, which is not a requirement for the SMAW process?
electricity
gas supply
base metal
filler metal
Which of the following is an incorrect statement about an E7018 electrode?
Once opened, it should be kept in an electrode oven.
The weld deposit has a minimum tensile strength of 70,000 psi.
They are suitable for flat position and horizontal fillet only
They are suitable for use in all welding positions.
The distance from the molten tip of the SMAW electrode to the surface of the molten
weld pool should be
one electrode diameter
open circuit voltage.
ignition length.
arc current
Which one of the following electrodes is not suitable for use in all positions?
E6010
E6011
E7018
E7024
Which of the following electrodes would you select to produce a weld with shallow
penetration?
6010
6011
6013
7018
An engine-driven generator without a rectifier produces what form of welding
current?
AC only
dc only
both ac and dc
ac and dcep
Which group of electrodes is low hydrogen type?
E7024, E7027, and E7028
E6010 and E6011
E6012, E6013, and E7014
E7015, E7016 and E7018
“Arc blow” is caused by
strong winds associated with outdoor welding.
magnetic forces associated with direct current.
too high an amperage for the size of the electrode
too low an amperage for the size of the electrode
“Duty cycle” is a term used to indicate the
percentage of time in a 24 hour cycle that a machine can operate at rated
output.
percentage of time in a 10 minute period a machine can operate at rated
output.
Percentage of time in a machine which can do the type of work for which it
was designed
length of time required for the machine to cycle, expressed as a percentage
run time
When the welding machine is set to DCEP, current flows
from the work to the electrode.
from the electrode to the work.
both to and from the electrode
depending on the electrode being used.
Which of the following welding cable sizes is the largest?
# 1/0
# 2
# 1
# 2/0
Rectifiers are noted for their ability to
control welding power
reduce spatter
change AC to DC.
eliminate arc blow
In North America, alternating current changes direction
once per second.
60 times per second.
120 times per second
240 times per second
In order to reduce waste and control cost, you should weld until the electrode is
one half inch from the core wire.
down to the core wire.
four (4) inches form the core wire
down to the classification numbers
The last digit in the electrode classification E7018 indicates
welding position the electrode can be used
minimum tensile strength of the electrode
Type of current and electrode coating.
carbon content of the deposited weld.
The E7024 electrode can be used in
all positions.
flat position and horizontal fillets only
flat, horizontal and vertical down positions.
flat, horizontal, vertical down and overhead positions.
The electrode classification that indicates a deep penetrating electrode that can be
used with alternating current (AC) current is
6010
6011
6012
6013
Back-stepping at the end of a weld made with the SMAW process
is not done because it traps slag
reduces electrode stub loss
helps to prevent crater cracking
puts too much heat on the electrode holder
The first two (2) digits of the electrode classification indicate the
positions in which the electrode can be used
minimum tensile strength of the deposited weld
The polarity
the flux coating
An E6010 deep penetrating electrode belongs to
F1 Group.
F2 Group
F3 Group
F4 Group.
SMAW equipment is portable because the welding machines can be powered with
gasoline or diesel engines.
True
false
Excessive spatter and undercutting of weld joints can be caused by current values
being set too high.
true
false
The E6010 Electrode is run mostly on DCEN
true
false
A number 1 in the next to last digit of the electrode classification for SMAW
electrodes, indicates that an electrode can be used in the flat position and on
horizontal flat welds only.
a) T
true
false
A number 2 in the next to last digit of the electrode classification on an SMAW
electrode, indicates the electrode may be used in all welding positions.
true
false
With direct current electrode positive (DCEP), the work piece is positive.
true
false
