Question 121Motor Plants - 1st Asst/Chief

70% to pass

On a slow-speed diesel engine vessel equipped with an ALCAP fuel oil purification system, what would be a symptom of an opening solenoid valve leaking by?

AAn increase in RPM.
BAn increase in the rate at which the purifier sludge tank is rising.
CAn increased in the voltage at the EPC control cabinet.
DAn increased amperage draw.
AI Explanation

The correct answer is B) An increase in the rate at which the purifier sludge tank is rising. If the solenoid valve in the ALCAP fuel oil purification system is leaking, it would allow more fuel oil to bypass the purifier, leading to an increased amount of sludge being separated out and collected in the sludge tank. This would result in the sludge tank filling up at a faster rate compared to normal operation. The other answer choices are incorrect because: A) An increase in RPM would not be a symptom of a leaking solenoid valve in the purification system. C) An increased voltage at the EPC control cabinet is not a direct consequence of a leaking solenoid valve. D) An increased amperage draw would not necessarily occur due to a leaking solenoid valve in the purification system.

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