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1. oxidation: loss of electrons, positive charge atoms (anode) 2. reduction: gain of electrons, negative charged atoms (cathode) 3. 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, hydrogen embrittlement, SCC (Carbonates/bicarbonates) 4...

1. oxidation: loss of electrons, positive charge atoms (anode) 2. reduction: gain of electrons, negative charged atoms (cathode) 3. 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, hydrogen embrittlement, SCC (Carbonates/bicarbonates) 4...

1. 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 2. Metal loss or corrosion occurs at the A) cathode B) anode C) electronic path D) metallic path: b 3. What are the four parts of the corrosion cell A) anode, resistor, electrolyte, metallic path B) anode, cathode, electron, e...

1. 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 2. 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 above 3. The purpose of the galvanic anode backfill is NOT ...

1. 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 2. 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 voltage drop of 5.0 mV with the test current applied and...

1. The elements of a corrosion cell include which of the following? 1. Anode 2. Cathode 3. Electrolyte 4. Electronic Path All of the Above 2. 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 3. An environment where cathodic protection is NOT effective is A. liquid B. soil C. atmospherically exposed sur...

1. 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 2. A mitigation bond may cause more problems under which of the following conditions? 1.Where the interfering structure bond point is more electropositive than the interfered with stru...

1. Ohm's Law relates the following... volts, amps, resistance 2. Resistance to current flow is lowest for a) low conductivity media b) small cross sectional area media c) short length of conductor d) high resistivity media c 3. In a series circuit a) voltage drops are always equal b) total resistance equals the sum of individual resistances c) current varies through resistors d) total current is equal to the sum of the current through each resistor b 4. According to Ohm's Law, an e...

1. Corrosion A) is defined by NACE International as the deterioration of a material, usually a metal that results from a reaction with its environment. B) is produced when acids dissociate , when cation takes place C) is the division of chemistry that deals with the transfer of electric charge in chemical reactions D) involves the movement of electrons anode to cathode for the reduction reaction to occur E) is equal to the reciprocal of resistivity. : A 2. Atoms A) are positively charg...

Which of the following factors can have a negative effect on uterine blood flow? a. Hypertension b. Epidural c. Hemorrhage d. Diabetes e. All of the above - Correct Answer-e. All of the above How does the fetus compensate for decreased maternal circulating volume? a. Increases cardiac output by increasing stroke volume. b. Increases cardiac output by increasing it's heart rate. c. Increases cardiac output by increasing fetal movement. - Correct Answer-b. Increases cardiac output by in...