ABYC Corrosion Exam 2025 UPDATE Verified Questions And Answer
ABYC Corrosion
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1. GFCI stands for... Ground Fault Circuit Interrupter
2. T/F A galvanic isolator WILL block stray AC. False. A galvanic isolator WILL NOT block
AC. It will only blocks stray DC that is mov-
ing through the green grounding con-
ductor.
3. T/F An isolation transformer makes a galvan- True.
ic isolator unnecessary.
4. An isolation transformer works through elec- Induction
tromagnetic _________.
5. A reverse polarity indicator is placed be- White neutral and green grounding.
tween which two wires? Why?
If the black hot and white neutral are
reversed, electricity will flow through the
white neutral illuminating the indica-
tor light and leaving through the green
grounding conductor.
6. Bonding wires shall be at least #__ AWG #8 AWG
7. Electrolytic corrosion is commonly known as: Stray-current corrosion
8. Stray-current corrosion is technically called: Electrolytic corrosion
9. Matter can exist as a Solid, liquid, or gas
10. Matter is made from Molecules
11. Molecules are made of Atoms
12. Atoms are made of protons, neutrons, electrons
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13. The atom is electrically Neutral. That's because the particles that
comprise an atom balance each other.
14. the outer shell of an atom is called the Valence shell
15. When the valence shell of an atom is com- Stable.
pletely filled, the atom is in its most ______
state.
16. Atoms that have gained or lost an electron Ions
are known as
17. T/F Ions can have positive or negative True.
charges?
18. Define Ionization The process by which an atom or mole-
cule acquires a charge.
19. What are the two types of chemical bonds? Covalent and ionic
20. In covalent bonds, atoms form chemical Sharing.
bonds by _______ electrons.
E.g. water, H2O
21. In ionic bonds, atoms form chemical bonds Giving up or gaining electrons.
by _______ electrons.
The atom giving an electron become a
positive ion. The atom gaining an elec-
tron becomes a negative ion. Oppositely
charged bodies are attracted to each oth-
er, bonding them together.
E.g. Sodium Chloride, NaCl, table salt.
22. True
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T/F Atoms in the valence shell are involved in
the corrosion process?
23. What is disassociation with regard to elec- When an ionic substance (like sodium
trolyte? chloride, table salt) is immersed in water
it disassociates, or separates, into posi-
tive and negative ions.
24. __________ are electrical conductors in which Electrolytes
current is carried by ions rather than by free
electrons.
25. The three categories of corrosion are: Electrochemical, galvanic, and electrolytic
26. Single-metal corrosion is technically referred Electrochemical corrosion
to as
27. Electrochemical corrosion is commonly Single-metal corrosion
known as
28. Galvanic corrosion is sometimes referred to Two-metal corrosion or bi-metallic corro-
as sion
29. Corrosion is often improperly called Electrolysis.
Electrolysis is what happens to the elec-
trolyte not the metals involved.
30. ____________ is the destructive alteration of Corrosion
metal by reachtion with its environment.
31. When a metal is less noble it is referred to as Anodic
32. False.
ABYC Corrosion
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1. GFCI stands for... Ground Fault Circuit Interrupter
2. T/F A galvanic isolator WILL block stray AC. False. A galvanic isolator WILL NOT block
AC. It will only blocks stray DC that is mov-
ing through the green grounding con-
ductor.
3. T/F An isolation transformer makes a galvan- True.
ic isolator unnecessary.
4. An isolation transformer works through elec- Induction
tromagnetic _________.
5. A reverse polarity indicator is placed be- White neutral and green grounding.
tween which two wires? Why?
If the black hot and white neutral are
reversed, electricity will flow through the
white neutral illuminating the indica-
tor light and leaving through the green
grounding conductor.
6. Bonding wires shall be at least #__ AWG #8 AWG
7. Electrolytic corrosion is commonly known as: Stray-current corrosion
8. Stray-current corrosion is technically called: Electrolytic corrosion
9. Matter can exist as a Solid, liquid, or gas
10. Matter is made from Molecules
11. Molecules are made of Atoms
12. Atoms are made of protons, neutrons, electrons
, ABYC Corrosion
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13. The atom is electrically Neutral. That's because the particles that
comprise an atom balance each other.
14. the outer shell of an atom is called the Valence shell
15. When the valence shell of an atom is com- Stable.
pletely filled, the atom is in its most ______
state.
16. Atoms that have gained or lost an electron Ions
are known as
17. T/F Ions can have positive or negative True.
charges?
18. Define Ionization The process by which an atom or mole-
cule acquires a charge.
19. What are the two types of chemical bonds? Covalent and ionic
20. In covalent bonds, atoms form chemical Sharing.
bonds by _______ electrons.
E.g. water, H2O
21. In ionic bonds, atoms form chemical bonds Giving up or gaining electrons.
by _______ electrons.
The atom giving an electron become a
positive ion. The atom gaining an elec-
tron becomes a negative ion. Oppositely
charged bodies are attracted to each oth-
er, bonding them together.
E.g. Sodium Chloride, NaCl, table salt.
22. True
, ABYC Corrosion
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T/F Atoms in the valence shell are involved in
the corrosion process?
23. What is disassociation with regard to elec- When an ionic substance (like sodium
trolyte? chloride, table salt) is immersed in water
it disassociates, or separates, into posi-
tive and negative ions.
24. __________ are electrical conductors in which Electrolytes
current is carried by ions rather than by free
electrons.
25. The three categories of corrosion are: Electrochemical, galvanic, and electrolytic
26. Single-metal corrosion is technically referred Electrochemical corrosion
to as
27. Electrochemical corrosion is commonly Single-metal corrosion
known as
28. Galvanic corrosion is sometimes referred to Two-metal corrosion or bi-metallic corro-
as sion
29. Corrosion is often improperly called Electrolysis.
Electrolysis is what happens to the elec-
trolyte not the metals involved.
30. ____________ is the destructive alteration of Corrosion
metal by reachtion with its environment.
31. When a metal is less noble it is referred to as Anodic
32. False.
