AMPP CP3 Full Exam Questions and
Answers with Verified Solutions | Latest
Updated 2026
What are the four elements Anode Cathode Electrolyte Metallic
required for corrosion? path
At which electrode does Anode
oxidation occur?
At which electrode does Cathode
reduction occur?
What is the primary purpose of Make the structure a cathode to
cathodic protection? prevent corrosion
Two types of cathodic Galvanic and Impressed Current
protection?
What is the protection -850 mV (CSE) Instant OFF
criterion for steel in soil?
Alternative protection 100 mV polarization shift
criterion?
What does a rectifier do? Converts AC to DC
What type of anodes are used Inert anodes (MMO graphite silicon
in ICCP systems? iron)
, What metals are used for Magnesium Zinc Aluminum
galvanic anodes?
Formula for Ohm's Law? V = IR
If V = 10V and R = 5 ohms 2A
what is current?
If I = 3A and R = 4 ohms what 12 V
is voltage?
If V = 24V and I = 6A what is 4 ohms
resistance?
Formula for power? P = VI
Calculate power if V = 12V 24 W
and I = 2A?
Formula for pipe surface area? A = πDL
Calculate area of pipe D=1 ft ~314 ft²
L=100 ft?
Formula for current I = A × CD
requirement?
If area = 1000 ft² and CD = 2 2A
mA/ft² what is current?
What happens to current It decreases
requirement if coating
Answers with Verified Solutions | Latest
Updated 2026
What are the four elements Anode Cathode Electrolyte Metallic
required for corrosion? path
At which electrode does Anode
oxidation occur?
At which electrode does Cathode
reduction occur?
What is the primary purpose of Make the structure a cathode to
cathodic protection? prevent corrosion
Two types of cathodic Galvanic and Impressed Current
protection?
What is the protection -850 mV (CSE) Instant OFF
criterion for steel in soil?
Alternative protection 100 mV polarization shift
criterion?
What does a rectifier do? Converts AC to DC
What type of anodes are used Inert anodes (MMO graphite silicon
in ICCP systems? iron)
, What metals are used for Magnesium Zinc Aluminum
galvanic anodes?
Formula for Ohm's Law? V = IR
If V = 10V and R = 5 ohms 2A
what is current?
If I = 3A and R = 4 ohms what 12 V
is voltage?
If V = 24V and I = 6A what is 4 ohms
resistance?
Formula for power? P = VI
Calculate power if V = 12V 24 W
and I = 2A?
Formula for pipe surface area? A = πDL
Calculate area of pipe D=1 ft ~314 ft²
L=100 ft?
Formula for current I = A × CD
requirement?
If area = 1000 ft² and CD = 2 2A
mA/ft² what is current?
What happens to current It decreases
requirement if coating
