Question 461Electricity/Electronics - Assistant Engineer70% to pass
In an impressed current cathodic hull protection system, what statement is true concerning the composition and arrangement of the anodes?
AI Explanation
The correct answer is C) The protective anodes are made of lead or platinized titanium and are electrically insulated from the hull.
In an impressed current cathodic hull protection system, the anodes are typically made of materials that are more electrochemically active than the hull material, such as lead or platinized titanium. These anodes are intentionally electrically insulated from the hull in order to create a potential difference that drives the cathodic protection current to flow from the anodes to the hull, protecting the hull from corrosion.
The other options are incorrect because zinc anodes would not be suitable for an impressed current system (option A), and the anodes should be electrically insulated from the hull, not bonded to it (options B and D).
Related Questions
#459 What are the characteristics of the field winding of a shunt wound motor? #460 The wiring diagram found in figure "A" of the illustration represents what type of DC motor? Illustration EL-0054 #462 While monitoring an impressed current cathodic hull protection system, which of the following measurements should remain constant in a properly operating electronically regulated system? #463 Referring to the impressed current cathodic hull protection system shown in the illustration, if required to control the impressed current to the anodes manually by using the hand adjustment potentiometer, what parameter should be maintained at a constant value? Illustration EL-0090 #464 Referring to the impressed current cathodic protection system shown in the illustration, if required to control the current to the anodes manually by using the hand adjustment potentiometer, what statement best represents the changes that should prompt one to recheck the reference electrode voltage (hull potential)? Illustration EL-0090