Question

Which of the following statements is/are correct about stray current?

(a) It usually encountered in cathodic-protection systems

(b) It refers to extraneous direct current in the earth

(c) Acceleration corrosion will occur at the point where the current enters the soil

(d) Stray current refers to extraneous direct current in the earth that usually encountered in cathodic protection systems and accelerated corrosion will occur at the point where current enters the soil

I had been asked this question in an international level competition.

My question is from Cathodic and Anodic Protection in section Corrosion Prevention of Corrosion Engineering

Answer 1

Correct choice is (d) Stray current refers to extraneous direct current in the earth that usually encountered in cathodic protection systems and accelerated corrosion will occur at the point where current enters the soil

For explanation: Stray current refers to extraneous direct current in the earth that usually encountered in cathodic protection systems and accelerated corrosion will occur at the point where current enters the soil.