AMPP (NACE) Cathodic Protection Tester CP1
Book Chapters 1-4 Test Prep 2026 Guide
1. Power rate at which energy is used by an electrical device
(P=VI, necessary to know power required by CP
rectifier to size AC supply circuit)
2. Longer wires (series) = resistance higher, lower
and current for given voltage
3. Cable running to groundbed repre- series, parallel
sents circuit and groundbed itself
represents circuit
4. DC direct current (flows in one direction, produced by
a battery)
5. AC alternating current (reverses direction, hertz rep-
resents a cycle)
6. How can AC be turned to DC? a rectifier
7. What is a transformer? used to increase or decrease voltage or isolate
incoming voltage source from outgoing voltage
8. Primary winding of a transformer is the voltage source
connected to...
9. Secondary winding of a transformer is the unit to which voltage is to be supplied
connected to...
10. primary voltage / secondary voltage = # of primary turns / # of secondary turns
11. In CP rectifiers, taps are located in the secondary
winding so that several voltage ad-
justments are possible
, AMPP (NACE) Cathodic Protection Tester CP1
Book Chapters 1-4 Test Prep 2026 Guide
12. Impedance total opposition that a circuit presents to AC (sim-
ilar to resistance in a DC circuit, also depends on
frequency and wave shape of current)
13. D'Arsonval movement stationary permanent magnet/moving coil system
of analog meter
14. When using an analog meter, what ter- positive
minal is the reference electrode con-
nected to?
15. Voltmeter measures voltage in response to current flow and
series resistance through coil (more sensitive at
lower voltages)
16. Ammeter measures current flow with resistors (shunts) in
parallel
17. Ohmmeter measures resistance (limited in corrosion work)
18. Why are ohmmeters limited in corro- ohmmeter cannot distinguish between resistance
sion work? (2) of isolation fitting and resistance through elec-
trolyte, voltage ditterence between two isolated
structures attects total voltage of circuit and cre-
ates errors
19. In areas with stray current, which type analog, because a digital meter takes measure-
of meter is better and why? ments several times per second and if voltage is
fluctuating it is diflcult to read a specific value
20. As pH decreases, corrosion rate... increases
21. amphoteric, protective oxide film on surface is dis-
solved in most strong acids and alkalis
Book Chapters 1-4 Test Prep 2026 Guide
1. Power rate at which energy is used by an electrical device
(P=VI, necessary to know power required by CP
rectifier to size AC supply circuit)
2. Longer wires (series) = resistance higher, lower
and current for given voltage
3. Cable running to groundbed repre- series, parallel
sents circuit and groundbed itself
represents circuit
4. DC direct current (flows in one direction, produced by
a battery)
5. AC alternating current (reverses direction, hertz rep-
resents a cycle)
6. How can AC be turned to DC? a rectifier
7. What is a transformer? used to increase or decrease voltage or isolate
incoming voltage source from outgoing voltage
8. Primary winding of a transformer is the voltage source
connected to...
9. Secondary winding of a transformer is the unit to which voltage is to be supplied
connected to...
10. primary voltage / secondary voltage = # of primary turns / # of secondary turns
11. In CP rectifiers, taps are located in the secondary
winding so that several voltage ad-
justments are possible
, AMPP (NACE) Cathodic Protection Tester CP1
Book Chapters 1-4 Test Prep 2026 Guide
12. Impedance total opposition that a circuit presents to AC (sim-
ilar to resistance in a DC circuit, also depends on
frequency and wave shape of current)
13. D'Arsonval movement stationary permanent magnet/moving coil system
of analog meter
14. When using an analog meter, what ter- positive
minal is the reference electrode con-
nected to?
15. Voltmeter measures voltage in response to current flow and
series resistance through coil (more sensitive at
lower voltages)
16. Ammeter measures current flow with resistors (shunts) in
parallel
17. Ohmmeter measures resistance (limited in corrosion work)
18. Why are ohmmeters limited in corro- ohmmeter cannot distinguish between resistance
sion work? (2) of isolation fitting and resistance through elec-
trolyte, voltage ditterence between two isolated
structures attects total voltage of circuit and cre-
ates errors
19. In areas with stray current, which type analog, because a digital meter takes measure-
of meter is better and why? ments several times per second and if voltage is
fluctuating it is diflcult to read a specific value
20. As pH decreases, corrosion rate... increases
21. amphoteric, protective oxide film on surface is dis-
solved in most strong acids and alkalis
