Question 182Motor Plants - QMED70% to pass
Sacrificial zinc anodes are used on the salt water side of diesel engine heat exchangers to _______________.
AI Explanation
The correct answer is B) reduce electrolytic action on heat exchanger metals.
Sacrificial zinc anodes are used on the salt water side of diesel engine heat exchangers to protect the metal components from galvanic corrosion. The zinc anode is more electrically active than the other metals in the system, so it acts as a sacrificial electrode and corrodes preferentially, preventing the more valuable heat exchanger metals from deteriorating. This helps maintain the integrity and functionality of the heat exchanger over time.
The other answer choices are incorrect because they do not accurately describe the primary purpose of the sacrificial zinc anode in this application. Options A, C, and D are not the main reasons for using the zinc anode on the salt water side of the heat exchanger.
Related Questions
#180 In a diesel engine jacket water cooler, with sea water cooling the engine jacket cooling water, what statement is true? #181 In a diesel engine lube oil cooler, with sea water cooling the lubricating oil, what statement is true? #183 In a diesel engine jacket water cooler, with sea water cooling the fresh water, the _______________.#184 Which of the devices listed is commonly used to compensate for the expansion and minor misalignments occurring between the main turbine rotor and the reduction gear? #185 What type of clutch is used in the illustrated medium-speed diesel engine reduction gear? Illustration MO-0085