NACE CP1 Exam with Questions and Answers – 100% Solved
0.02 V across a 50 mV and 10 A shunt indicates a current of...(Amps) - ✔✔✔-4.0 A
A commonly used galvanic anode material for steel is... - ✔✔✔-magnesium
Above which value is a structure AC voltage-to-ground considered hazardous? - ✔✔✔-15 V AC
at full power line load
According to Ohm's Law, an electrical circuit with a driving voltage of 12 Volts and a resistance
of 10 Ohms produces a current of...(Amps) - ✔✔✔-1.2 A
An adverse effect of stray DC current discharging from a metal into an electrolyte is the
a) loss of current to the foreign source of the current
b) loss of current to the structure's cathodic protection system
c) loss of metal from the structure
d) gain of metal on the foreign structure - ✔✔✔-c
An electrochemical reaction consists of
a) an oxidation half reaction and electron movement in the metallic path
b) a reduction half reaction and ionic movement in the electrolyte
c) an oxidation half reaction, a reduction half reaction, and electron movement in the metallic
path
d) an oxidation half reaction, a reduction half reaction, ionic movement in the electrolyte, and
electron movement in the metallic path - ✔✔✔-d
Anions are ______ charged ions - ✔✔✔-negatively
, NACE CP1 Exam with Questions and Answers – 100% Solved
At the anode in an electrochemical corrosion cell
a) electrons leave the anode and enter the electrolyte
b) positively charged ions leave the anode and enter the electrolyte
c) electrons leave the cathode and enter the electrolyte
d) negatively charged ions leave the anode and enter the electrolyte - ✔✔✔-b
Cations are _____ charged ions - ✔✔✔-positively
Compared to an impressed current system, a galvanic anode system has the following
advantage
a) no external power is required
b) current can easily be adjusted
c) more suitable for high resistivity soil
d) high current capacity - ✔✔✔-a
Compared to magnesium anodes, zinc anodes tend to have a
a) lower efficiency
b) less negative open circuit potential
c) higher current in higher soil resistivity
d) lower life expectancy - ✔✔✔-b
Compared to zinc anodes, magnesium anodes in high resistivty soil
0.02 V across a 50 mV and 10 A shunt indicates a current of...(Amps) - ✔✔✔-4.0 A
A commonly used galvanic anode material for steel is... - ✔✔✔-magnesium
Above which value is a structure AC voltage-to-ground considered hazardous? - ✔✔✔-15 V AC
at full power line load
According to Ohm's Law, an electrical circuit with a driving voltage of 12 Volts and a resistance
of 10 Ohms produces a current of...(Amps) - ✔✔✔-1.2 A
An adverse effect of stray DC current discharging from a metal into an electrolyte is the
a) loss of current to the foreign source of the current
b) loss of current to the structure's cathodic protection system
c) loss of metal from the structure
d) gain of metal on the foreign structure - ✔✔✔-c
An electrochemical reaction consists of
a) an oxidation half reaction and electron movement in the metallic path
b) a reduction half reaction and ionic movement in the electrolyte
c) an oxidation half reaction, a reduction half reaction, and electron movement in the metallic
path
d) an oxidation half reaction, a reduction half reaction, ionic movement in the electrolyte, and
electron movement in the metallic path - ✔✔✔-d
Anions are ______ charged ions - ✔✔✔-negatively
, NACE CP1 Exam with Questions and Answers – 100% Solved
At the anode in an electrochemical corrosion cell
a) electrons leave the anode and enter the electrolyte
b) positively charged ions leave the anode and enter the electrolyte
c) electrons leave the cathode and enter the electrolyte
d) negatively charged ions leave the anode and enter the electrolyte - ✔✔✔-b
Cations are _____ charged ions - ✔✔✔-positively
Compared to an impressed current system, a galvanic anode system has the following
advantage
a) no external power is required
b) current can easily be adjusted
c) more suitable for high resistivity soil
d) high current capacity - ✔✔✔-a
Compared to magnesium anodes, zinc anodes tend to have a
a) lower efficiency
b) less negative open circuit potential
c) higher current in higher soil resistivity
d) lower life expectancy - ✔✔✔-b
Compared to zinc anodes, magnesium anodes in high resistivty soil
