South Branch Career and Technical Center
Shielded Metal Arc Welding
Directions: 1. Read each question carefully;
2. read choices a, b, c and d;
3. select the correct answer; you may enter ONLY ONE ANSWER;
4. using your mouse, place the cursor over the "option button" to the left side of the correct answer. "Left click" the cursor. The center of the option button should become green. If it does not, please ask your instructor for assistance. After the option button becomes green, you have successfully answered the question, and you may move on to the next question.
5. When you have finished the test, please re-read and check your answers. When you feel you have done your best, go to "File" in the upper left hand side of your task bar, select the "Print" option. When the print box appears, press OK. Your completed test should begin printing.
A ferrous grinding stone can be used on
a) aluminum.
b) brass.
c) copper.
d) steel.
Question 2
When welding under 125 amps, the proper shade lens for carbon steel is
a) 10.
b) 12.
c) 14.
d) 5.
Question 3
The welding machine MUST be properly grounded to
a) cut down on fumes.
b) prevent arc flash.
c) prevent electrical
shock.
d) stabilize the
arc.
Question 4
The MOST probable cause of weld porosity is
a) metal
contamination.
b) arc
characteristics.
c) atmospheric
pressure.
d) excessive
shielding gas.
Question 5
The FIRST method for testing a weld is to
a) bend it.
b) conduct an
ultrasonic test.
c) visually inspect
it.
d) x-ray it.
Question 6
A gas pocket in a welded joint results in
a) a
cleaning/shielding gas.
b) a depression at
the end of a weld.
c) a puddle
d) porosity.
Question 7
You must make a square groove weld with a 1/4 inch root opening. How far apart should the faces of the weld groove be?
a) 1/2 inch
b) 1/4 inch
c) 1/8 inch
d) 3/8 inch
Question 8
You are making a tee joint with a single fillet. You should lean the web member away from the weld before welding in order to minimize
a) cracking.
b) distortion.
c) porosity.
d) preheating.
Question 9
When shielded-metal arc welding with a 1/8" coated electrode, the amperage setting should be approximately
a) 110 - 130
amps.
b) 15 - 25
amps.
c) 50 - 65
amps.
d) 90 - 120
amps.
Question 10
Which electrode does NOT require storage in an electrode oven after removal from its shipping container?
a) E11018
b) E6011
c) E7018
d) E7018-A1
Question 11
The duty cycle of welding machines is based on a period of
a) 10 minutes.
b) 24 hours.
c) 30 minutes.
d) 8 hours.
Question 12
At the proper current setting, which of the following will have the LEAST effect on penetration i SMAW?
a) amperage
b) arc length
c) electrode size
d) rate of travel
Question 13
The BEST hand tool for the final cleaning of a SMAW weld pass is a
a) cold chisel.
b) file.
c) hammer.
d) wire brush.
Question 14
A cap or cover is the
a) final pass.
b) first pass.
c) second pass.
d) tacking pass.
Question 15
A triangular cross-section weld used with tee, lap, and corner joints is called a
a) groove weld.
b) fillet weld.
c) slot weld.
d) plug weld.
Question 16
The separation between the prepared beveled plates to be joined at the root is called
a) root face.
b) root of the joint.
c) root
opening.
d) root weld.
Question 17
If a groove weld ONLY goes part of the way through the joint, it is called a
a) spot penetration.
b) half penetration.
c) partial joint
penetration.
d) full penetration.
Question 18
An open butt joint requires what type of weld?
a) groove weld
b) spot weld
c) fillet
weld
d) slot weld
Question 19
There are two (2) types of welding current. They are
a) AC/DC.
b) SMAW/GMAW.
c) positive and
negative.
d) reverse and
straight.
Question 20
Full penetration groove welds require
a) 90 percent
penetration.
b) 75 percent
penetration.
c) 100 percent
penetration.
d) 125 percent
penetration.
Question 21
Fillet welds can be made in
a) flat and vertical
positions only.
b) vertical and
horizontal positions only.
c) overhead and
vertical positions only.
d) all positions.
Question 22
Low hydrogen electrodes should be stored in an oven at
a) 150 degrees.
b) 500 degrees.
c) 250 degrees.
d) 325
degrees.
Question 23
The total angle between two beveled plates is called the
a) included
angle.
b) beveled
angle.
c) depth of
bevel.
d) right
angle.
Question 24
The point where the face for the weld metal and the base metal meet is called the
a) face of the weld.
b) size of the weld.
c) root of the
weld.
d) toe of the
weld.
Question 25
Reinforcement of the weld on the side, other than the side the weld was made is called
a) face
reinforcement.
b) root
reinforcement.
c) weld
reinforcement.
d) total
reinforcement.
For questions 26 through 29, refer to letters A, B, C, D and E on the chart below:
Question 26
Which figure above represents a lap joint?
a) D
b) E
c) A
d) B
Question 27
Which figure above represents a tee joint?
a) B
b) C
c) A
d) E
Question 28
Which figure above represents a corner joint?
a) D
b) A
c) B
d) C
Question 29
Which figure above represents a butt joint?
a) B
b) D
c) E
d) A
Question 30
Shielded metal arc welding is sometimes called
a) mig welding.
b) stick welding.
c) semi-automatic arc
welding
d) safety metal arc
welding.
Question 31
Reverse polarity (DCRP) current flows
a) from
electrode to base metal.
b) from base
metal to electrode.
c) at 60
cycles.
d) from the
transformer rectifier.
Question 32
The third number in a 6010 electrode refers to
a) tensile strength.
b) electrode
classification.
c) welding
position.
d) heat
setting.
Question 33
When a welding machine is on but NOT actually performing a welding task, it has
a) operating voltage.
b) low voltage.
c) welding voltage.
d) open circuit
voltage.
Question 34
On DCEP, the electrical current is flowing from the
a) positive
terminal.
b) negative
terminal.
c) rectifier.
d) input
terminal.
Question 35
Of the following, the MOST frequently used welding process is
a) SAW.
b) SMAW.
c) PAW.
d) TGAW.
Question 36
The major DISADVANTAGE of AC arc welding machines is
a) AC
welding rods are shorter.
b)
excessive weld spatter.
c)
not all SMAW electrodes can be used.
d)
extended heat affective zone.
Question 37
To make minor external repairs to SMAW equipment the
a) arc
welding machine should be turned off.
b) power
source should be left on.
c) wire
feeder set at 150 ipm.
d)
polarity switch set at DCEP.
Question 38
Minor external repairs to welding equipment include
a) replacing
electrode holder and welding leads.
b) replacing
the transformer and rectifier.
c) replacing
circuit boards and diodes.
d) replacing
amperage and polarity controls.
Question 39
The exposed surface of a fillet weld is the
a) toe.
b) leg.
c) face.
d) root.
Question 40
The distance from the root of the joint to the toe of a fillet weld is called the
a) actual throat.
b) effective throat.
c) size.
d) leg.
Question 41
What is another name for the horizontal fillet weld position?
a) 2G
b) 3G
c) 2F
d) 4F
Question 42
A tee joint welded in the 4F position is a
a) horizontal
weld.
b) flat weld.
c) vertical
weld.
d) overhead
weld.
Question 43
The part of the base metal which has been altered but NOT melted by the heat of a weld is called the
a) leg.
b) heat
affected zone.
c) affective
throat.
d) unaffected zone.
Question 44
Excessive weld metal can be removed by using a(n)
a) chipping
hammer.
b) sand
blaster.
c) angle
grinder.
d) wire brush.
Question 45
The purpose of a groove angle is
a) to reduce welding
time.
b) to allow access to
the root of the weld.
c) to increase weld
reinforcement.
d) to prevent burn
through at the root.
Question 46
An E6010 electrode is classified as a
a) fast fill.
b) low hydrogen.
c) fast freeze.
d) fill freeze.
Question 47
Welding machines are classified by the
a) open circuit
voltage they require.
b) operating
voltage they require.
c) maximum
amperage they can produce.
d) method of
producing welding current.
Question 48
An E7018 electrode is classified as a
a) fast fill.
b) low hydrogen.
c) fill freeze.
d) fast freeze.
Question 49
The FIRST two digits in E7018 indicates
a) electric welding.
b) characteristics of
the flux coating.
c) position of
electrode.
d) minimum tensile
strength times 1000.
Question 50
Larger diameter electrodes require a
a) square butt gap.
b) lower amperage
current.
c) higher amperage
current.
d) shorter arc gap.