NACE CP2 EXAM(ACTUAL EXAM) WITH
CORRECT ACTUAL QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS
LATEST ALREADY GRADED A+ 2026
Potential Measured (E m ) =
A) IR Drop+ Depolarization+ True Potential
B) IR Drop- Polarization+ E corr
C) E corr * Polarization * IR Drop
D) E corr + Polarization + IR Drop - ANSWERS-d
Key factors in selecting an interruption cycle
include
I maintaining depolarization over the duration of the survey
project
,II maximizing depolarization during the OFF period
III minimizing depolarization during the day
IV Ability to measure accurate OFF potential data after the
"spike" has dissipated
V maintaining polarization over the duration of the survey
project
A) I, II, III
B) III, IV, V
C) II, III, IV
D) II, III, IV, V - ANSWERS-b
True or False (t or f)
In regards to current interrupters , the duty cycle is the
percentage of ON time to OFF time - ANSWERS-
Maintaining an ___% / ___% or ___% / ____% "duty cycle"
is important to minimize ____ during the day and over the
duration of the survey project
A) 50/50 , 75/25 , depolarization
,B) 80/20 , 50/50, polarization
C) 80/20 , 75/25, depolarization, polarization
D) 80/20 , 75/25, depolarization, depolarization - ANSWERS-
d
True or false (t or f)
Current interrupters should be left on during the night -
ANSWERS-f
it is important to turn off the current interrupters at night.
This will reduce the amount of time the current sources are
being cycled and help rebuild any polarization which may
have been lost during the day when the current sources
were cycling ON and OFF.
Some ____ interrupters will fail in the on position when
synchronized if they lose ___ signal and then restart when it
comes back, unless there is a _____ monitoring the data
A) quartz crystal, head spacing, data logger
B) quartz crystal, satellite, meter station
, C) GPS, satellite, data logger
D) GPS, head spacing, meter station - ANSWERS-c
One method of verifying interruption synchronization and of
checking the
magnitude and duration of the inductive/capacitive spike is
by recording a ____ or "wave print"
A) wave scope
B) current wave
C) data logger
D) waveform - ANSWERS-d
Evidence that cathodic protection is working can be
obtained by using ____ , they consist of ____
A) coupons, the same metal as the anode
B) coupons, the same metal as the cathode - ANSWERS-b
Coupons ____ weighed carefully before being electrically
connected to the protected structure
CORRECT ACTUAL QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS
LATEST ALREADY GRADED A+ 2026
Potential Measured (E m ) =
A) IR Drop+ Depolarization+ True Potential
B) IR Drop- Polarization+ E corr
C) E corr * Polarization * IR Drop
D) E corr + Polarization + IR Drop - ANSWERS-d
Key factors in selecting an interruption cycle
include
I maintaining depolarization over the duration of the survey
project
,II maximizing depolarization during the OFF period
III minimizing depolarization during the day
IV Ability to measure accurate OFF potential data after the
"spike" has dissipated
V maintaining polarization over the duration of the survey
project
A) I, II, III
B) III, IV, V
C) II, III, IV
D) II, III, IV, V - ANSWERS-b
True or False (t or f)
In regards to current interrupters , the duty cycle is the
percentage of ON time to OFF time - ANSWERS-
Maintaining an ___% / ___% or ___% / ____% "duty cycle"
is important to minimize ____ during the day and over the
duration of the survey project
A) 50/50 , 75/25 , depolarization
,B) 80/20 , 50/50, polarization
C) 80/20 , 75/25, depolarization, polarization
D) 80/20 , 75/25, depolarization, depolarization - ANSWERS-
d
True or false (t or f)
Current interrupters should be left on during the night -
ANSWERS-f
it is important to turn off the current interrupters at night.
This will reduce the amount of time the current sources are
being cycled and help rebuild any polarization which may
have been lost during the day when the current sources
were cycling ON and OFF.
Some ____ interrupters will fail in the on position when
synchronized if they lose ___ signal and then restart when it
comes back, unless there is a _____ monitoring the data
A) quartz crystal, head spacing, data logger
B) quartz crystal, satellite, meter station
, C) GPS, satellite, data logger
D) GPS, head spacing, meter station - ANSWERS-c
One method of verifying interruption synchronization and of
checking the
magnitude and duration of the inductive/capacitive spike is
by recording a ____ or "wave print"
A) wave scope
B) current wave
C) data logger
D) waveform - ANSWERS-d
Evidence that cathodic protection is working can be
obtained by using ____ , they consist of ____
A) coupons, the same metal as the anode
B) coupons, the same metal as the cathode - ANSWERS-b
Coupons ____ weighed carefully before being electrically
connected to the protected structure
