AMPP CP3 Technologist Practice Questions - AMPP CP3 Cathodic Protection Technologist Exam

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For a CP system design, what attenuation constant α describes the exponential decay of CP current along a uniformly coated pipeline?

α = sqrt(R_L / R_C), where R_L is pipe longitudinal resistance per unit length and R_C is coating resistance per unit length α = R_L × R_C α = R_C − R_L α = R_L + R_C

Correct Answer:

α = sqrt(R_L / R_C), where R_L is pipe longitudinal resistance per unit length and R_C is coating resistance per unit length

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