CWB Level 2 Module 5 Power Sources for ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Welding exam with correct answers ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Guide Question - Section 2
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"Electric current is readily conducted in metals (low resistance)
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
because of the many free electrons" ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
True or false - correct answers✔✔True
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Guide Question - Section 2
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"Conventional current flow is from negative to positive" ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
True or False - correct answers✔✔False
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Guide Question - Section 2
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Materials that have a high resistance to current flow are called: ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
a) Semi conductors
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b) conductors
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,c) insulators - correct answers✔✔c) insulators
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Guide Question - Section 2 ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
"A gas can only conduct electricity when the gas has been
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
ionized (a plasma has formed)" ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
True or False - correct answers✔✔True
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Guide Question - Section 2 ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
The 3 major components of a welding arc are:
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
a) anode, cathode and plasma
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b) nozzle, gas and electrode
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c) work piece, gas and weld metal - correct answers✔✔a)
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
anode, cathode and plasma ||\\||\\ ||\\||\\ ||\\||\\
Guide Question - Section 2 ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
"Gas tungsten arc welding incorporates a consumable
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
electrode"
,True or False - correct answers✔✔False
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Guide Question - Section 2 ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Transformer-based welding power sources are typically ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
connected to: ||\\||\\
a) engine driven generator
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
b) utility supply power - correct answers✔✔b) utility supply
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
power
Guide Question - Section 2 ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
"To initiate an arc required high current and low voltage power
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
True or False - correct answers✔✔False
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Guide Question - Section 2 ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
For a consumable electrode welding process the majority of the
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
heat in DCEN polarity is concentrated on the:
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
, a) electrode
||\\||\\
b) workpiece - correct answers✔✔a) electrode
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Guide Question - Section 2 ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
For a non-consumable electrode welding process the majority
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
of the heat in DCEN polarity is concentrated on the:
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
a) electrode
||\\||\\
b) workpiece - correct answers✔✔b) workpiece
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Guide Question - Section 2 ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
"Ohm's law applies to a welding arc since current increases as ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
voltage increases" ||\\||\\
True or False - correct answers✔✔False
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Guide Question - Section 2 ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Welding exam with correct answers ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Guide Question - Section 2
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
"Electric current is readily conducted in metals (low resistance)
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
because of the many free electrons" ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
True or false - correct answers✔✔True
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Guide Question - Section 2
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
"Conventional current flow is from negative to positive" ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
True or False - correct answers✔✔False
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Guide Question - Section 2
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Materials that have a high resistance to current flow are called: ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
a) Semi conductors
||\\||\\ ||\\||\\
b) conductors
||\\||\\ ||\\||\\
,c) insulators - correct answers✔✔c) insulators
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Guide Question - Section 2 ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
"A gas can only conduct electricity when the gas has been
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
ionized (a plasma has formed)" ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
True or False - correct answers✔✔True
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Guide Question - Section 2 ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
The 3 major components of a welding arc are:
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
a) anode, cathode and plasma
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
b) nozzle, gas and electrode
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
c) work piece, gas and weld metal - correct answers✔✔a)
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
anode, cathode and plasma ||\\||\\ ||\\||\\ ||\\||\\
Guide Question - Section 2 ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
"Gas tungsten arc welding incorporates a consumable
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
electrode"
,True or False - correct answers✔✔False
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Guide Question - Section 2 ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Transformer-based welding power sources are typically ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
connected to: ||\\||\\
a) engine driven generator
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
b) utility supply power - correct answers✔✔b) utility supply
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
power
Guide Question - Section 2 ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
"To initiate an arc required high current and low voltage power
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
True or False - correct answers✔✔False
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Guide Question - Section 2 ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
For a consumable electrode welding process the majority of the
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
heat in DCEN polarity is concentrated on the:
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
, a) electrode
||\\||\\
b) workpiece - correct answers✔✔a) electrode
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Guide Question - Section 2 ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
For a non-consumable electrode welding process the majority
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
of the heat in DCEN polarity is concentrated on the:
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
a) electrode
||\\||\\
b) workpiece - correct answers✔✔b) workpiece
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Guide Question - Section 2 ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
"Ohm's law applies to a welding arc since current increases as ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
voltage increases" ||\\||\\
True or False - correct answers✔✔False
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Guide Question - Section 2 ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
