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NACE (National Association of Corrosion Engineers) Cathodic
Protection CP2 Technician EXAM A&B ALL 600 QUESTIONS
AND CORRECT ANSWERS LATEST UPDATE THIS YEAR
NACE (National Association of Corrosion Engineers) Cathodic Protection CP2 Technician
QUESTION: The cathodic protection criteria for steel includes which of the following? (select all
that apply)
A) a potential of -850 mVcse or more negative with current applied after IR drop is considered.
B) a polarized potential of -850 mVcse or more negative
C) polarization of 100 mVcse or greater
D) a polarized potential of -790 mVssc or more negative - ANSWER-a, b, c, d
-790 mVssc = -850 mVcse
QUESTION: Given:
E1 = 20 V
R1 = 10 Ω
R2 = 10 Ω
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R3 = 10 Ω
R4 = 10 Ω
What is the current R1? - ANSWER-Answer on next slide
QUESTION: Given:
E1 = 20 V
R1 = 10 Ω
R2 = 10 Ω
R3 = 10 Ω
R4 = 10 Ω
What is the current R1?
A) 0.29 A
B) 0.67 A
C) 1.0 A
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D) 2.0 A - ANSWER-C
R2,3,4 = 1/30 + 1/30 + 1/30
R2,3,4 = 0.033 + 0.033 + 0.033
R2,3,4 = .099
R2,34 = 10.1 Ω
Rt = R1 + R2,3,4
Rt = 10 Ω + 10.1 Ω
Rt = 20.1 Ω
I = 20 V / 20.1 Ω
I = 0.995 A or 1.0 A
QUESTION: When cathodic protection is applied to a
corroding steel surface, it shifts the corrosion cell potential at the _____________
A) no change in potential
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B) cathode more negative
C) cathode more positive
D) anode more positive - ANSWER-b
QUESTION: Cathodic protection polarizes:
A) the potential of the structure anode to the open circuit potential of the structure cathode
B) the potential of the structure cathode to the open circuit potential of the structure anode
C) the potential of the structure cathode to the open circuit potential of the CP anode
D) the CP anode potential to the open circuit potential of the structure cathode - ANSWER-b
QUESTION: Polarization occurs
A) at the anode surface only
B) at the cathode surface only
C) at the anode and cathode surfaces
D) in the metallic path - ANSWER-c
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NACE (National Association of Corrosion Engineers) Cathodic
Protection CP2 Technician EXAM A&B ALL 600 QUESTIONS
AND CORRECT ANSWERS LATEST UPDATE THIS YEAR
NACE (National Association of Corrosion Engineers) Cathodic Protection CP2 Technician
QUESTION: The cathodic protection criteria for steel includes which of the following? (select all
that apply)
A) a potential of -850 mVcse or more negative with current applied after IR drop is considered.
B) a polarized potential of -850 mVcse or more negative
C) polarization of 100 mVcse or greater
D) a polarized potential of -790 mVssc or more negative - ANSWER-a, b, c, d
-790 mVssc = -850 mVcse
QUESTION: Given:
E1 = 20 V
R1 = 10 Ω
R2 = 10 Ω
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R3 = 10 Ω
R4 = 10 Ω
What is the current R1? - ANSWER-Answer on next slide
QUESTION: Given:
E1 = 20 V
R1 = 10 Ω
R2 = 10 Ω
R3 = 10 Ω
R4 = 10 Ω
What is the current R1?
A) 0.29 A
B) 0.67 A
C) 1.0 A
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D) 2.0 A - ANSWER-C
R2,3,4 = 1/30 + 1/30 + 1/30
R2,3,4 = 0.033 + 0.033 + 0.033
R2,3,4 = .099
R2,34 = 10.1 Ω
Rt = R1 + R2,3,4
Rt = 10 Ω + 10.1 Ω
Rt = 20.1 Ω
I = 20 V / 20.1 Ω
I = 0.995 A or 1.0 A
QUESTION: When cathodic protection is applied to a
corroding steel surface, it shifts the corrosion cell potential at the _____________
A) no change in potential
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B) cathode more negative
C) cathode more positive
D) anode more positive - ANSWER-b
QUESTION: Cathodic protection polarizes:
A) the potential of the structure anode to the open circuit potential of the structure cathode
B) the potential of the structure cathode to the open circuit potential of the structure anode
C) the potential of the structure cathode to the open circuit potential of the CP anode
D) the CP anode potential to the open circuit potential of the structure cathode - ANSWER-b
QUESTION: Polarization occurs
A) at the anode surface only
B) at the cathode surface only
C) at the anode and cathode surfaces
D) in the metallic path - ANSWER-c
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