Study guides, Class notes & Summaries

NACE 2 CBT Study Guide Questions with Verified Solutions Latest Update Corrosion is established as a what kind of current? - Answer -Direct Current All corrosion of iron at normal ambient conditions is ________________ ____________ - Answer -an electrochemical process Define, E=IR - Answer -E is driving voltage, I is current magnitude, R is circuit resistance. The less noble part of a corrosion cell - negatively charged - dissolves metallic iron then converts it to positively charged ions...

NACE CP2 Study Guide with Verified Solutions 2024 oxidation - Answer -loss of electrons, positive charge atoms (anode) reduction - Answer -gain of electrons, negative charged atoms (cathode) forms of corrosion - Answer -uniform, crevice, galvanic (dissimilar metals) if two metals have to be couple then best to couple metals close together in the galvanic series, pitting, intergranular, selective leaching (dezincification, graphitization), velocity phenomena, environmental cracking (corrosi...

NACE CP2 – EXAM | 490 Questions with Verified Solutions Latest Update START OF CHAPTER 1 Corrosion is an electrochemical process involving A) flow of protons and electrons B) flow of neutrons and ions C) flow of protons and ions D) flow of electrons and ions E) flow of resistance and resistivity - Answer -d Metal loss or corrosion occurs at the A) cathode B) anode C) electronic path D) metallic path - Answer -b What are the four parts of the corrosion cell A) anode, resistor, el...

NACE CP2 Quiz 4 Questions and Answers (Verified Answers) A galvanic anode system is NOT normally suitable in which of the following conditions? A. When a small amount of current is required B. In high soil resistivity C. For localized protection D. For interference mitigation B. In high soil resistivity Proper operation of a rectifier can be confirmed by which of the following? 1. DC current output 2. DC voltage output 3. Tap setting 4. Potential at a control point All of the...

NACE CP2 Exam Questions and Answers (Verified Answers) NACE 2008 Student Manual! START OF CHAPTER 1 Corrosion is an electrochemical process involving A) flow of protons and electrons B) flow of neutrons and ions C) flow of protons and ions D) flow of electrons and ions E) flow of resistance and resistivity d Metal loss or corrosion occurs at the A) cathode B) anode C) electronic path D) metallic path b What are the four parts of the corrosion cell A) anode, resisto...

Summary NACE CP2 Study Guide Complete Solutions Verified oxidation loss of electrons, positive charge atoms (anode) reduction gain of electrons, negative charged atoms (cathode) forms of corrosion uniform, crevice, galvanic (dissimilar metals) if two metals have to be couple then best to couple metals close together in the galvanic series, pitting, intergranular, selective leaching (dezincification, graphitization), velocity phenomena, environmental cracking (corrosion fatigue, hyd...

NACE CP2 Quiz 2 Questions and Answers (Verified Answers) A structure-to-electrolyte potential measures the potential difference between A. Two different structures acting as electrodes B. The structure and a standard reference electrode C. The structure and the anodes D. Two different points on the structure B. The structure and a standard reference electrode If 5.0 A of battery current passes through the outside leads of a 4-wire current span spaced at 30 m (100 ft), resulting in a...

NACE CP2 Quiz 3 Questions and Answers (Verified Answers) A mitigation control bond should be designed to 1. carry the necessary current 2. restrict the current to that required to mitigate the problem 3. keep the current going in one direction if necessary 4. return the potential on the interfered with structure to its pre-interference state All of the above A mitigation bond may cause more problems under which of the following conditions? 1. Where the interfering structure bond ...

NACE CP2 Quiz 1 Questions and Answers (Verified Answers) The elements of a corrosion cell include which of the following? 1. Anode 2. Cathode 3. Electrolyte 4. Electronic Path All of the Above Faraday's Law calculates the A. potential of a metal in seawater B. potential of a metal in the metal ion solution C. metal lost based on the resistance D. metal lost due to current over time D. metal Lost due to current over time An environment where cathodic protection is NOT ef...