AMPP CATHODIC LATEST
PROTECTION
TECHNOLOGIST LEVEL 3
(CP3) PRACTICE EXAM
QUESTIONS AND
ANSWERS 2026 - 2027
1. The primary purpose of cathodic protection is to:
A. Increase metal hardness
B. Reduce the corrosion rate of a metal structure by making it the
cathode of an electrochemical cell
C. Increase coating thickness
D. Eliminate electrical resistance
Correct Answer: B
Rationale: Cathodic protection reduces corrosion by shifting the
structure's potential in the negative direction and making it function as a
cathode.
2. Corrosion of steel is fundamentally a:
END OF
PAGE
1
, AMPP CATHODIC LATEST
PROTECTION
TECHNOLOGIST LEVEL 3
(CP3) PRACTICE EXAM
QUESTIONS AND
ANSWERS 2026 - 2027
A. Mechanical reaction
B. Thermal reaction
C. Electrochemical reaction
D. Magnetic reaction
Correct Answer: C
Rationale: Corrosion involves anodic metal dissolution and cathodic
reactions occurring simultaneously.
3. In a corrosion cell, metal loss occurs at the:
A. Cathode
B. Electrolyte
END OF
PAGE
2
, AMPP CATHODIC LATEST
PROTECTION
TECHNOLOGIST LEVEL 3
(CP3) PRACTICE EXAM
QUESTIONS AND
ANSWERS 2026 - 2027
C. Anode
D. Reference electrode
Correct Answer: C
Rationale: Oxidation and metal dissolution occur at anodic areas.
4. Which reference electrode is most commonly used for underground
pipeline surveys?
A. Copper/Copper Sulfate Electrode (CSE)
B. Silver/Silver Chloride Electrode
C. Zinc Electrode
D. Platinum Electrode
END OF
PAGE
3
, AMPP CATHODIC LATEST
PROTECTION
TECHNOLOGIST LEVEL 3
(CP3) PRACTICE EXAM
QUESTIONS AND
ANSWERS 2026 - 2027
Correct Answer: A
Rationale: Copper/copper sulfate reference electrodes are widely used
for buried steel structures.
5. According to commonly used cathodic protection criteria, a polarized
potential of at least:
A. -0.250 V CSE
B. -0.500 V CSE
C. -0.850 V CSE
D. -2.000 V CSE
Correct Answer: C
END OF
PAGE
4
PROTECTION
TECHNOLOGIST LEVEL 3
(CP3) PRACTICE EXAM
QUESTIONS AND
ANSWERS 2026 - 2027
1. The primary purpose of cathodic protection is to:
A. Increase metal hardness
B. Reduce the corrosion rate of a metal structure by making it the
cathode of an electrochemical cell
C. Increase coating thickness
D. Eliminate electrical resistance
Correct Answer: B
Rationale: Cathodic protection reduces corrosion by shifting the
structure's potential in the negative direction and making it function as a
cathode.
2. Corrosion of steel is fundamentally a:
END OF
PAGE
1
, AMPP CATHODIC LATEST
PROTECTION
TECHNOLOGIST LEVEL 3
(CP3) PRACTICE EXAM
QUESTIONS AND
ANSWERS 2026 - 2027
A. Mechanical reaction
B. Thermal reaction
C. Electrochemical reaction
D. Magnetic reaction
Correct Answer: C
Rationale: Corrosion involves anodic metal dissolution and cathodic
reactions occurring simultaneously.
3. In a corrosion cell, metal loss occurs at the:
A. Cathode
B. Electrolyte
END OF
PAGE
2
, AMPP CATHODIC LATEST
PROTECTION
TECHNOLOGIST LEVEL 3
(CP3) PRACTICE EXAM
QUESTIONS AND
ANSWERS 2026 - 2027
C. Anode
D. Reference electrode
Correct Answer: C
Rationale: Oxidation and metal dissolution occur at anodic areas.
4. Which reference electrode is most commonly used for underground
pipeline surveys?
A. Copper/Copper Sulfate Electrode (CSE)
B. Silver/Silver Chloride Electrode
C. Zinc Electrode
D. Platinum Electrode
END OF
PAGE
3
, AMPP CATHODIC LATEST
PROTECTION
TECHNOLOGIST LEVEL 3
(CP3) PRACTICE EXAM
QUESTIONS AND
ANSWERS 2026 - 2027
Correct Answer: A
Rationale: Copper/copper sulfate reference electrodes are widely used
for buried steel structures.
5. According to commonly used cathodic protection criteria, a polarized
potential of at least:
A. -0.250 V CSE
B. -0.500 V CSE
C. -0.850 V CSE
D. -2.000 V CSE
Correct Answer: C
END OF
PAGE
4
