ABYC Corrosion EXAM NEWEST 2025
ACTUAL EXAM COMPLETE QUESTIONS
AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) |ALREADY
GRADED A+
/. GFCI stands for... - Answer-Ground Fault Circuit Interrupter
/.T/F A galvanic isolator WILL block stray AC. - Answer-False. A galvanic isolator WILL
NOT block AC. It will only blocks stray DC that is moving through the green grounding
conductor.
/.T/F An isolation transformer makes a galvanic isolator unnecessary. - Answer-True.
/.An isolation transformer works through electromagnetic _________. - Answer-
Induction
/.A reverse polarity indicator is placed between which two wires? Why? - Answer-White
neutral and green grounding.
If the black hot and white neutral are reversed, electricity will flow through the white
neutral illuminating the indicator light and leaving through the green grounding
conductor.
/.Bonding wires shall be at least #__ AWG - Answer-#8 AWG
/.Electrolytic corrosion is commonly known as: - Answer-Stray-current corrosion
/.Stray-current corrosion is technically called: - Answer-Electrolytic corrosion
/.Matter can exist as a - Answer-Solid, liquid, or gas
/.Matter is made from - Answer-Molecules
/.Molecules are made of - Answer-Atoms
/.Atoms are made of - Answer-protons, neutrons, electrons
, /.The atom is electrically - Answer-Neutral. That's because the particles that comprise
an atom balance each other.
/.the outer shell of an atom is called the - Answer-Valence shell
/.When the valence shell of an atom is completely filled, the atom is in its most ______
state. - Answer-Stable.
/.Atoms that have gained or lost an electron are known as - Answer-Ions
/.T/F Ions can have positive or negative charges? - Answer-True.
/.Define Ionization - Answer-The process by which an atom or molecule acquires a
charge.
/.What are the two types of chemical bonds? - Answer-Covalent and ionic
/.In covalent bonds, atoms form chemical bonds by _______ electrons. - Answer-
Sharing.
E.g. water, H2O
/.In ionic bonds, atoms form chemical bonds by _______ electrons. - Answer-Giving up
or gaining electrons.
The atom giving an electron become a positive ion. The atom gaining an electron
becomes a negative ion. Oppositely charged bodies are attracted to each other,
bonding them together.
E.g. Sodium Chloride, NaCl, table salt.
/.T/F Atoms in the valence shell are involved in the corrosion process? - Answer-True
/.What is disassociation with regard to electrolyte? - Answer-When an ionic substance
(like sodium chloride, table salt) is immersed in water it disassociates, or separates, into
positive and negative ions.
/.__________ are electrical conductors in which current is carried by ions rather than by
free electrons. - Answer-Electrolytes
/.The three categories of corrosion are: - Answer-Electrochemical, galvanic, and
electrolytic
/.Single-metal corrosion is technically referred to as - Answer-Electrochemical corrosion
/.Electrochemical corrosion is commonly known as - Answer-Single-metal corrosion
ACTUAL EXAM COMPLETE QUESTIONS
AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) |ALREADY
GRADED A+
/. GFCI stands for... - Answer-Ground Fault Circuit Interrupter
/.T/F A galvanic isolator WILL block stray AC. - Answer-False. A galvanic isolator WILL
NOT block AC. It will only blocks stray DC that is moving through the green grounding
conductor.
/.T/F An isolation transformer makes a galvanic isolator unnecessary. - Answer-True.
/.An isolation transformer works through electromagnetic _________. - Answer-
Induction
/.A reverse polarity indicator is placed between which two wires? Why? - Answer-White
neutral and green grounding.
If the black hot and white neutral are reversed, electricity will flow through the white
neutral illuminating the indicator light and leaving through the green grounding
conductor.
/.Bonding wires shall be at least #__ AWG - Answer-#8 AWG
/.Electrolytic corrosion is commonly known as: - Answer-Stray-current corrosion
/.Stray-current corrosion is technically called: - Answer-Electrolytic corrosion
/.Matter can exist as a - Answer-Solid, liquid, or gas
/.Matter is made from - Answer-Molecules
/.Molecules are made of - Answer-Atoms
/.Atoms are made of - Answer-protons, neutrons, electrons
, /.The atom is electrically - Answer-Neutral. That's because the particles that comprise
an atom balance each other.
/.the outer shell of an atom is called the - Answer-Valence shell
/.When the valence shell of an atom is completely filled, the atom is in its most ______
state. - Answer-Stable.
/.Atoms that have gained or lost an electron are known as - Answer-Ions
/.T/F Ions can have positive or negative charges? - Answer-True.
/.Define Ionization - Answer-The process by which an atom or molecule acquires a
charge.
/.What are the two types of chemical bonds? - Answer-Covalent and ionic
/.In covalent bonds, atoms form chemical bonds by _______ electrons. - Answer-
Sharing.
E.g. water, H2O
/.In ionic bonds, atoms form chemical bonds by _______ electrons. - Answer-Giving up
or gaining electrons.
The atom giving an electron become a positive ion. The atom gaining an electron
becomes a negative ion. Oppositely charged bodies are attracted to each other,
bonding them together.
E.g. Sodium Chloride, NaCl, table salt.
/.T/F Atoms in the valence shell are involved in the corrosion process? - Answer-True
/.What is disassociation with regard to electrolyte? - Answer-When an ionic substance
(like sodium chloride, table salt) is immersed in water it disassociates, or separates, into
positive and negative ions.
/.__________ are electrical conductors in which current is carried by ions rather than by
free electrons. - Answer-Electrolytes
/.The three categories of corrosion are: - Answer-Electrochemical, galvanic, and
electrolytic
/.Single-metal corrosion is technically referred to as - Answer-Electrochemical corrosion
/.Electrochemical corrosion is commonly known as - Answer-Single-metal corrosion
