AMPP CP1 Tester Practice Questions - AMPP CP1 Cathodic Protection Tester Exam - AMPP CP1 Tester Practice Questions

Question 1

What is the standard -850 mV criterion for cathodic protection of buried steel as specified in NACE SP0169, and what reference electrode is it measured against?

-850 mV measured to a saturated Ag/AgCl reference electrode -850 mV (polarized or with IR drop considered) measured to a saturated copper/copper sulfate (CSE) reference electrode -850 mV measured to a standard hydrogen electrode (SHE) -850 mV measured to a zinc reference electrode

Correct Answer:

-850 mV (polarized or with IR drop considered) measured to a saturated copper/copper sulfate (CSE) reference electrode

Question 2

A CP tester measures a pipe-to-soil potential of -900 mV vs CSE with the rectifier ON. After instant-off, the potential reads -780 mV vs CSE. Which of the following statements is MOST accurate?

The structure meets the -850 mV polarized criterion The IR drop is 120 mV and the instant-off potential does not meet the -850 mV polarized criterion The structure is overprotected The CSE reference is contaminated

Correct Answer:

The IR drop is 120 mV and the instant-off potential does not meet the -850 mV polarized criterion

Question 3

Which of the following is the PRIMARY purpose of the instant-off (interrupt) technique when measuring pipe-to-soil potential?

To reduce meter battery consumption To eliminate the IR drop component from the measurement so the polarized potential can be read To measure AC voltage separately from DC To verify rectifier efficiency

Correct Answer:

To eliminate the IR drop component from the measurement so the polarized potential can be read

Question 4

A CP tester reads a pipe-to-soil potential of -0.780 V using a silver/silver chloride (Ag/AgCl, saturated KCl) reference electrode. Approximately what is the equivalent potential in mV vs CSE?

-661 mV -780 mV -899 mV -960 mV

Correct Answer:

-899 mV

Question 5

What is the MOST common electrolyte used in a portable copper/copper sulfate reference electrode?

Distilled water A saturated copper sulfate (CuSO4) solution with excess solid crystals Sodium chloride solution Potassium chloride gel

Correct Answer:

A saturated copper sulfate (CuSO4) solution with excess solid crystals

Exam overview

About this Exam

Prepare with the AMPP CP1 Tester Practice Questions - AMPP CP1 Cathodic Protection Tester Exam practice quiz. This question bank includes 100 questions covering potential, pipeline, reference, electrode, and rectifier. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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AMPP CP1 Tester Practice Questions - AMPP CP1 Cathodic Protection Tester Exam

This practice set contains 100 questions from the matching question bank and focuses on potential, pipeline, reference, electrode, and rectifier. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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AMPP CP1 Tester Practice Questions - AMPP CP1 Cathodic Protection Tester Exam

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