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Sem 1 Review
Test Description: Test 1
Instructions: Answer all questions to get your test result.
1) provides an extra boost of current to help establish an arc when using electrodes that are hard to start
A
hot start
B
current
C
polarity
D
frequency
2) is the amount of electron flow through an electrical circuit
A
polarity
B
frequency
C
transformer
D
current
3) Torch technique is determined by metal ____ or by depth of bevel
A
thickness
B
angle
C
type
D
color
4) The correct diameter filler metal is approximately _________ the thickness of the base metal
A
more than
B
equal to
C
double
D
less than
5) ________ changes AC current from one level to another
A
transformer
B
converter
C
current
D
voltage
6) When welding with DCEP, electron flow from the _______ to the _______
A
clamp, stinger
B
stinger, clamp
C
workpiece, electrode
D
electrode, workpiece
7) is used to remove slag after the weld is deposited
A
screwdriver
B
slag hammer
C
your hand
D
pliers
8) determines whether current flows into the workpieces or toward the electrode in a DC circuit
A
flash suppressor
B
polarity
C
current
D
amps
9) is caused by insufficient gas flow to the welding torch
A
popping
B
holes in weld
C
backfire
D
overheat
10) When backhand welding, the torch angle is approximately ____° above the plate
A
45
B
30
C
80
D
60
11) The four basic welding positions are
A
flat, horizontal, vertical, upside down
B
flat, horizontal, vertical, overhead
C
flat, horizontal, angle, overhead
D
edge, butt, vertical, overhead
12) The cylinder valve is cracked to remove debris (dust, chips) lodged in the outlet nozzle
A
True
B
False
13) has a very distinctive, nauseating odor
A
argon
B
hydrogen
C
oxygen
D
acetylene
14) is caused by the flame going out suddenly on the torch
A
hot start
B
porosity
C
backfire
D
harsh flame
15) a check valve/flash arrestor allows the flow of liquid or gas in one direction only
A
True
B
False
16) The ______ welding process does not use shielding gas to protect the weld area. In this automated process, the electrode, arc, and weld pool are submerged in a granular flux that is poured on the base metal.
A
MIG
B
flux core
C
submerged arc
D
TIG
17) _____ arc welding consists of a spool of hollow wire filled with flux that is fed through the gun. This process does not require external shielding gas. It is commonly used to weld carbon, low-alloy and stainless steels, and cast iron.
A
MIG
B
TIG
C
flux core
D
submerged arc
*select an answer for all questions
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