Coast Guard Exams
Question 256General Subjects - QMED70% to pass

The simplest method to use for determining if a centrifugal pump is operating as designed is to _______________.

AI Explanation
The correct answer is D) close off the discharge valve, and watch for a rise in pressure. Closing off the discharge valve and monitoring the rise in pressure is the simplest method to determine if a centrifugal pump is operating as designed. This is because a properly functioning centrifugal pump will generate an increase in pressure when the discharge is blocked, indicating that the pump is delivering the expected output. The other options, such as monitoring discharge temperature or using a clamp-on ammeter, do not directly assess the pump's performance in the same way as observing the pressure rise.