Corrosion to passive Study guides, Class notes & Summaries

Electrical Circuits - the structures that provide paths through which electricity travels Electrical Circuits - path along which electrons flow; may be wired as series circuits or parallel circuits Active Elements - possess energy of their own and can impart it to other element of the circuit voltage source - a device that creates a potential difference in an electric circuit Current source - A device that produces a constant current for a varying load. Passive Elem...

NACE CP3 - Chpt 1. Mechanisms of Corrosion questions and answers 100% correctCorrosion Zone Fe0 -> Fe++ + 2e- (soluble - reaction can keep occuring) Immunity to Passive Fe0 + 2H2O -> Fe(OH)3 + 2H+ + 2e- (insoluble - builds up at the interface) Corrosion to Passive Fe++ + 3H2O -> Fe(OH)3 +3H+ + 1e- More Active (+ or -) Electronegative - Less Noble Less Active (+ or -) Electropositive - More Noble Nerst Equation A metal electrode potential is a fun...

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 (corrosion fatigue, hydrogen embrittlement, SCC (Carbonates/b...

School Bus Exam Questions and Answers 100% Pass During loading or unloading procedure the students should cross the road in front of the bus within ____ feet - Correct Answer ️️ -10 To be a school bus driver, individuals must pass the following written tests - Correct Answer ️️ -CDL General Knowledge, Passenger Endorsement, School Bus Endorsement The blind spot behind the bus could extend to how many feet? - Correct Answer ️️ - 400 Overhead inside mirror is used to - Correct ...

CDL School Bus Endorsement Practice Exam Questions and Answers 1.1 What do the red flashing lights on an eight-light system bus signify to other drivers? A. The school bus is stopped for a red light B. The school bus is stopped for a train crossing C. The school bus is stopped because it is broken down D. The school bus is stopped to pick up or discharge pupils D. The school bus is stopped to pick up or discharge pupils 1.2 While looking through the interior flat mirror the driver s...

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, resistor, electrolyte, metallic path B) anode, cathode, ...

Corrosion Zone - ANSWER Fe0 -> Fe++ + 2e- (soluble - reaction can keep occuring) Immunity to Passive - ANSWER Fe0 + 2H2O -> Fe(OH)3 + 2H+ + 2e- (insoluble - builds up at the interface) Corrosion to Passive - ANSWER Fe++ + 3H2O -> Fe(OH)3 +3H+ + 1eMore Active (+ or -) - ANSWER Electronegative - Less Noble Less Active (+ or -) - ANSWER Electropositive - More Noble

Building systems Systems utilized to address convenience, comfort, access, efficiency, and life safety of occupants Stairs Enable access to multiple levels of a structure and serve as a basic component of building egress during an emergency Convenience stairs Stairs that usually connects two floors in a multistory building Tread Horizontal face of a step, flat portion Riser Vertical part of a stair step Run Horizontal measurement of a stair tread or dista...

MCQ 770 Questions & Answer Electrical Engineering 2024 UpdateMCQ 770 Questions & Answer Electrical Engineering 2024 Update 1. The ratio of voltage and electric current in a closed circuit a. remains constant b. varies c. increases d. falls Ans-c 2. The curve representing ohm's law is a. sine function b. Linear c. a parabola d. a hyperbola Ans-b 3. The resistance of a conductor having length l area of cross section a and resistivity ρ is given as: a. ρa/l b. ρl/a c. ρla d. l/ρ...

MCQ 770 Questions & Answer Electrical Engineering 2024 UpdateMCQ 770 Questions & Answer Electrical Engineering 2024 Update 1. The ratio of voltage and electric current in a closed circuit a. remains constant b. varies c. increases d. falls Ans-c 2. The curve representing ohm's law is a. sine function b. Linear c. a parabola d. a hyperbola Ans-b 3. The resistance of a conductor having length l area of cross section a and resistivity ρ is given as: a. ρa/l b. ρl/a c. ρla d. l/ρ...